Nephrology — Specialty Profile

Exploratory, not prescriptive. This profile blends hard data (pay, match rates, burnout, demographics — each sourced and dated) with generalizations and synthesized online opinion about culture and "who fits." It's here to help you get curious and go find out for yourself — not to tell you who to become. Numbers marked ⟳ verify change every year; check the linked source before you quote one. Last reviewed: 2026-07-25.

Also called: neph, kidney medicine, renal. Subspecialty fellowship of Internal Medicine. You do not match into it from medical school; you reach it through an IM residency. Scope: the kidney across its whole range, covering acute kidney injury, chronic kidney disease (CKD), dialysis, transplant, hypertension, and the electrolyte and acid-base disorders of the whole body. Organ system: renal and genitourinary and, functionally, the body's fluid-and-electrolyte homeostasis.

The 30-second version

Nephrology is internal medicine's "physiology specialty," the field organized around the kidney's job of keeping the body's water, salts, and pH in balance, and around what to do when that balance fails. You are the consultant everyone calls when the case is a multi-organ mess: the crashing ICU patient with acute kidney injury, the dangerous potassium, the sodium that won't behave, the diabetic whose kidneys are slowly failing, the dialysis patient you'll see three times a week for years, the transplant recipient on immunosuppression. It is widely regarded as the most cerebral IM subspecialty, the one most rooted in first-principles, mechanistic reasoning, and it carries one of medicine's sharpest paradoxes: it is among the hardest to master, the easiest to match into, and the lowest-paid of the internal-medicine subspecialties. That contradiction is the whole personality of the field.

Quick dashboard (details and sources below)
How you get here Through Internal Medicine — not a direct match from med school
Training after med school IM residency (3) + Nephrology fellowship (2) = 5 yrs (+1 for transplant/interventional)
Total from college start ~13 years (4 undergrad + 4 med school + 3 IM + 2 fellowship)
Competitiveness (as an IM fellowship) Among the least competitive — consistently underfills the Match (~66% filled, ~0.77 applicants/position) ⟳
Typical full-time pay ~$355,000–$370,000 total comp — lower-middle of IM subspecialties ⟳
Pay range (structure) ~$225k starting/low-volume · ~$290k median (benchmark) · ~$489k senior partner ⟳
Lifestyle ~50 hrs/wk, fragmented across sites; weekend/holiday dialysis rounding is structural
Burnout 29.3% on the AMA's 2025 survey, one of the six lowest specialties it names; drivers are administrative rather than clinical ⟳
% women ~39% of adult fellows (2025 ASN survey) ⟳
DO / IMG accessibility Very open — ~58% of fellows are IMGs, ~16–22% DO ⟳

What they actually do

Nephrologists manage the kidney across its entire arc, but the day-to-day splits into a few distinct jobs done in parallel. In outpatient clinic they follow chronic kidney disease, hypertension, electrolyte problems, and post-transplant patients, often the same people for years. On the inpatient consult service they are called for acute kidney injury, dangerous electrolyte and acid-base derangements (hyperkalemia, severe acidosis, tumor lysis), and decisions about when and how to start dialysis. In the dialysis unit they round on in-center hemodialysis patients on a fixed schedule, multiple times a month, and continuing on weekends and holidays because dialysis never stops. And in the ICU they run continuous renal replacement therapy (CRRT) for the sickest multi-organ-failure patients.

The core skill is quantitative physiologic reasoning at the bedside rather than a procedure: reconciling sodium, water, potassium, acid-base, and volume status simultaneously in a patient whose kidneys can no longer do it for them. Nephrology is largely cognitive and E&M-based (rounding, consults, dialysis management) rather than procedure-driven, which is central to both its intellectual reputation and its compensation story (below). Its main procedural revenue, placing and managing dialysis vascular access, is frequently ceded to interventional radiology or surgery, unless the nephrologist trains in interventional nephrology.

Representative work: dialysis prescription and management (in-center HD, home HD, peritoneal dialysis) · CRRT in the ICU · acute kidney injury workup · fluid, electrolyte, and acid-base management · CKD progression management and dialysis-access planning · kidney biopsy interpretation and (in some practices) performance · renal transplant recipient care and immunosuppression · resistant-hypertension management. Procedurally light by default; interventional nephrologists add fistula/graft angioplasty, thrombectomy, tunneled and PD catheter placement.

A day in the life: The work is fragmented across sites, which is what makes nephrology feel heavy even at a moderate hour count. A typical day threads together morning dialysis-unit rounds, an outpatient CKD/hypertension clinic, and a running inpatient consult list that keeps generating urgent pages: an ICU AKI, a critical potassium, someone who needs dialysis started today. Call is genuinely busy and cognitively taxing: emergent dialysis decisions, electrolyte crises, renal-replacement choices in unstable patients. It is not "sign out and forget" call, and weekend and holiday hemodialysis rounding is a non-negotiable, structural part of the job.

The training path & time to completion

Nephrology is a subspecialty fellowship of Internal Medicine, so it is a two-step entry: you first match into and complete an IM residency, then apply separately to nephrology fellowship. There is no direct-from-med-school route.1

MD or DO (4 yrs) → Internal Medicine residency (3 yrs) → Nephrology fellowship (2 yrs) → board-eligible with ABIM Nephrology → optional +1 year (transplant or interventional).1

  • Fellowship length: ABIM requires 24 months (2 years) of ACGME-accredited nephrology training to sit for the Nephrology certifying exam. A small number of programs run 3 years for a research track.1
  • Board: the American Board of Internal Medicine (ABIM). You must first be IM-certified, then complete the accredited fellowship, then pass the ABIM Nephrology certifying exam.1
  • Programs: 152 ACGME-accredited adult nephrology programs (AY 2024–2025).2 ⟳
  • Subspecialty add-ons (+1 yr): Transplant nephrology (~1 yr; historically accredited via the ASN/AST TNFTAP program, with a proposal to move to ACGME accreditation under review) and interventional nephrology (~1 yr; not ACGME-accredited, so program-based and ASDIN-affiliated).3
  • Total after med school: 5 years (3 IM + 2 nephrology) to board-eligibility; 6 years with a transplant or interventional year. From the start of college that's roughly 13 years (4 + 4 + 5).1

How competitive is it?

Because nephrology is a fellowship, competitiveness is measured not by the medical-school-to-residency Main Match but by the NRMP Medicine and Pediatric Specialties Match (the "fall match," held in December for fellowships starting the following July). And here nephrology is one of medicine's clearest outliers: it consistently underfills.45

In the AY 2026 Match (held December 2025, reported by ASN using NRMP results):4 ⟳

  • 501 positions offered · 333 filled → 66.5% fill rate, leaving 168 unfilled positions across 97 programs.
  • Only 89 of 186 tracks (48%) filled completely.
  • 386 applicants ranked nephrology; 333 matched, so about 86% of the people who wanted it got in.
  • Applicant-to-position ratio ≈ 0.77. there are meaningfully more fellowship slots than applicants.

Zoomed out, nephrology sits in the bottom cluster of IM subspecialties by fill rate. In the 2025 Medicine and Pediatric Specialties Match (40 subspecialties, 85.7% overall fill), the lowest fill rates were Geriatric Medicine (~39%), Adult Infectious Disease (~61%), Addiction Medicine (~64%), and Nephrology (~66%), while Cardiology (100%), GI (99.5%), and Heme/Onc (99.5%) filled essentially completely.5 ⟳

What that means for you today: nephrology is a buyer's market for applicants. With ~0.77 applicants per position and roughly one in three slots unfilled, it is among the easiest IM fellowships to match into. That accessibility is a genuine, structural advantage (see the FLI angle). But it's the same signal that drives the pay-and-workload honesty below: the field underfills largely because of its economics rather than its intellectual content.

Compensation — the robust version

Nephrology pay is well-documented and, more than almost anything else about the field, is where the honest story lives. A note on sources first: surveys disagree because they measure different things (median clinical pay vs. total comp; self-report vs. benchmark). Doximity/Medscape run higher because they capture more experienced, dialysis-active physicians; MGMA-style benchmarks and job-posting aggregators run lower. Treat Medscape/Doximity as the anchor for headline magnitude and the benchmark percentiles for structure.6789

National number. Depending on source and year, nephrology lands from ~$312,000 (Medscape 2023) to ~$367,000 (Doximity 2025 / Medscape 2025), with Medscape 2026 at ~$359,000. A defensible "typical full-time" figure for 2025–26 is ~$355,000–$370,000 total compensation.67 ⟳

The paradox: hardest field, near-bottom pay. On Medscape's 2026 all-specialty ranking, nephrology (~$359K) placed 19th of 29 specialties (tied with PM&R). It sits below the procedural, high-RVU IM subspecialties (cardiology at ~$575K, gastroenterology, pulmonary and critical care, heme-onc) and above mainly the true bottom (pediatrics, public health, infectious disease, family medicine, endocrinology).6 The mechanism is structural rather than a fluke: nephrology is cognitive and E&M-based, its biggest procedural revenue (dialysis access) is often ceded elsewhere, and much of its income leans on dialysis rounding volume and medical directorships rather than high-margin procedures. Online and in trainee surveys this is the nephrology conversation: the field widely voted the hardest to think through pays the least among IM subspecialties, and a hospitalist can now approach nephrology pay without the extra two fellowship years, making the opportunity cost hard to justify on money alone.8

The spread (structure). FastRVU's nephrology benchmark tool, an aggregator's own educational model rather than a licensed survey, puts the percentiles here (treat exact cutoffs as ⟳ but read the shape as representative): 25th pct ~$225K (early-career, <4,500 wRVU) · median ~$290K · 75th–90th pct ~$375K+ (>7,000 wRVU, dialysis-heavy). Median productivity ~5,800 wRVU/yr at ~$50/wRVU. A separately cited MGMA figure runs ~$384,596 (2023 data). Practical min–max band: ~$225K (starting/low-volume) to $500K+ (senior partner with multiple dialysis directorships).97 ⟳

Starting against experienced, and the partner jump. The cleanest starting-salary source is the ASN/Kidney News Fellow Survey (median base for graduating fellows): $200K (2021) → $219.5K (2022) → $231K (2023) → $240K (2024), up ~20% in three years.10 ⟳ The career arc (PayScale pattern) runs roughly entry ~30% below average, mid-career ~7% below, late-career ~14% above.7 The dramatic gap is by ownership: W-2 employees ~$306K against private-practice owners and partners ~$489K, and that ~$183K partner premium is driven heavily by equity in dialysis joint ventures and accumulated medical directorships rather than base-salary growth.7

The dialysis medical-directorship lever (the key income multiplier). This is the single most important thing to understand about nephrology economics. A nephrologist's income is often materially boosted by serving as medical director of one or more outpatient dialysis units, typically clinics run by DaVita or Fresenius (the two dominant chains) or Dialysis Clinic Inc. No compensation survey prices a dialysis medical directorship separately, so the structure of the lever is documented and its level is not.11 Crucially, these stipends are per unit and stackable, so a nephrologist directing several clinics adds income on top of clinical earnings. (The arrangements must be fair-market-value and commercially reasonable to satisfy Stark/Anti-Kickback rules, so hours and duties are benchmarked.)12 Beyond stipends, private-group nephrologists may hold joint-venture equity in dialysis facilities alongside DaVita and Fresenius, historically a major wealth driver and the main reason partner comp so far exceeds employed comp. The takeaway: base clinical nephrology pays modestly; the money is built by adding directorships and ownership on top.

Academic vs. private (the standard discount). Private group ~$370K > hospital-employed non-academic ~$344K > academic hospital-employed ~$323K (AAMC academic benchmark ~$284K corroborates the discount).7 ⟳

Geography is recruitment-driven rather than just cost-of-living. Headline top numbers cluster in high-cost coastal metros (aggregator 2025: Berkeley ~$349K, Santa Monica ~$336K, Boston ~$327K; San Jose cited as high as ~$474K, high-variance).7 But a recurring recruiter theme is that rural/underserved markets frequently pay comparable or higher effective compensation, because of higher dialysis-unit density per nephrologist, more available medical directorships, larger patient panels, and recruitment incentives.13 ⟳

Locum tenens. Rates run $125–$200/hr; illustrative full-time locum (~40 hrs/wk at $185/hr) annualizes to ~$370K, and a hybrid (employed base + ~4 locum days/mo) to ~$435K.13 ⟳

Trends coloring all of it. New CKD/cardiorenal drugs (SGLT2 inhibitors, finerenone, GLP-1s) are slowing CKD progression and delaying dialysis, shifting revenue upstream toward early-CKD clinic management and pressuring the in-center-dialysis income model over time.14 A home-dialysis push (federal policy favoring home HD, PD, and transplant) is changing the directorship/rounding revenue mix.15 And CMS's value-based Kidney Care Choices (KCC) model, once an upside lever for organized groups, was cut back on May 28, 2025 after ~$304M net losses: the Kidney Care First option ends a year early (Dec 31, 2025), the $15,000-per-transplant bonus is eliminated in 2026, and CKD quarterly capitation was cut 50%, so participants should expect reduced program revenue unless quality improves.16 ⟳ Net direction: modest positive raw growth (+3% to +3.7% in 2025), but the field's economics increasingly hinge on value-based contracts and CKD and home-dialysis management rather than in-center dialysis volume.6

Lifestyle & the fragmented-schedule bargain

Nephrology's hour count is moderate, roughly 50 hours/week of clinical time on average, but the distribution is what makes it feel heavy.17 The work is spread across three or more sites (clinic, inpatient consults, dialysis units, sometimes the ICU), and the schedule is tethered to things you don't control: dialysis runs on fixed schedules, and consult demand is urgent and unpredictable.

  • Weekend and holiday dialysis rounding is structural rather than occasional, since patients dialyze on fixed schedules regardless of the calendar, so someone is always rounding.17
  • Call is busy and cognitively taxing: emergent dialysis decisions, acute renal-replacement choices, electrolyte crises. It is not sign-out-and-forget call.17
  • Administrative load is among the highest in medicine. Roughly 18 hours/week on bureaucratic tasks in Medscape data, near the top of all specialties, driven by dialysis regulation, ESRD documentation, and coordinating care for medically complex patients.17

Schedule control runs moderate-to-low. Because the work is pinned to dialysis schedules and multi-site consult demand, nephrologists have less day-to-day control than office-based IM subspecialties (endocrine, allergy, rheum). Newer practice models, whether interventional, non-clinical, or alternatively scheduled, are emerging specifically to address this.17

Lifestyle rating: 2.5/5. Reasonable total hours, but low control over when they fall, and the year-round dialysis obligation removes the clean "days off" other cognitive fields enjoy.

Wellbeing — the part to take seriously

The AMA's 2025 Organizational Biopsy puts nephrology at 29.3% against a 41.9% all-physician average, one of the six lowest specialties it names.17 ⟳ The dominant drivers cited are bureaucratic and administrative tasks plus workload rather than the clinical content, which nephrologists tend to love.17

Fair-compensation perception is low. In Medscape data only about 43% of nephrologists felt fairly paid, near the bottom of all fields, and that sense of being under-rewarded for high difficulty colors morale.17 ⟳

On "would choose medicine again," there is nothing to report. Nobody has published a would-choose-again rate by specialty since about 2019, so there is no figure to give here and none is asserted. The most recent traceable Medscape datapoint of any kind is 68% among physicians under 40, from 2022, with no specialty breakdown.17

Career longevity and the satisfaction paradox. Despite the grumbling, job security is excellent and demand is rising as the CKD/ESRD/diabetes/hypertension population grows and the workforce ages, so nephrologists rarely struggle to find work.17 Many describe deep, durable meaning in long-term patient relationships (dialysis patients seen thrice weekly for years). The paradox is real: intellectual reward and continuity stay high even when pay-per-effort feels low.

Who's in the field (demographics)

  • Women: ~39% of adult nephrology fellows (2025 ASN Fellow Survey, N=339); ~39% of matched AY 2026 fellows.184 ⟳ (Pediatric nephrology fellows skew very differently, at ~70% women, but that's a small, separate subgroup.)
  • IMG: ~58% of fellows are international medical graduates, both in the 2025 ASN survey and among AY 2026 matched fellows (US-IMG ~18% plus non-US IMG ~40%). This is one of the highest IMG shares of any IM subspecialty.184 ⟳
  • DO: 16% of AY 2026 matched fellows; ~22% of US-graduate current fellows, so nephrology is comparatively DO-accessible.418 ⟳
  • US MD: ~26% of AY 2026 matched fellows, a minority of entrants, reflecting how heavily the field draws from IMG and DO pipelines.4 ⟳
  • URiM (adult fellows, 2025): Black or African American ~6% and Hispanic or Latino ~11%, both underrepresented relative to the population.18 ⟳

Culture, personality & the online stereotypes

Who gravitates here: this is, only half-jokingly, "the physiology nerds' physiology." People drawn to nephrology tend to love acid-base, electrolytes, fluid balance, and renal physiology as intellectual puzzles, the specialty most explicitly rooted in mechanistic, first-principles reasoning. They enjoy being the consultant everyone calls when the case is a multi-organ mess, are comfortable managing chronic, complex, high-mortality patients over years, and are mission-driven and continuity-oriented, and many describe genuine bonds with dialysis patients seen for years. As always, plenty of people in the field do not fit any single mold.19

The stereotypes. Community caricatures rather than facts, each with an unfair edge:

  • "The smartest / most cerebral IM subspecialty." Partly earned, since renal physiology is genuinely hard, but used online as a backhanded compliment implying you'll work hardest intellectually for the least reward.
  • "Worst pay-to-work ratio in IM." A real kernel (pay lags procedural peers while workload is heavy) but unfair as a blanket claim, since directorships, ownership, and non-clinical roles can materially change the economics.
  • "The IMG specialty." Reductive and unfair. IMGs and DOs do make up a large, growing share of fellows, but framing that as a knock devalues the physicians and the field, and it reflects supply and demand rather than quality.
  • "Nobody chooses it, so it underfills." True at the aggregate match level, but unfair as a verdict, since those who do choose it tend to be the most physiology-passionate trainees, and fill rates have been trending up.

What people say online (synthesized and paraphrased, not quotes): Across trainee and physician forums the recurring debate is the "pay paradox," namely why the subspecialty widely regarded as the hardest to reason through pays the least among IM subspecialties and still underfills. The consensus answer online is economic rather than intellectual: reimbursement for cognitive/CKD/dialysis work hasn't kept pace with procedural fields, and hospitalist salaries now rival nephrology without the extra two years, so the opportunity cost is hard to justify on money alone. A cynical camp calls the field "dead," citing declining pay, corporate-dialysis consolidation squeezing independent practice, and heavy weekend rounding. A counter-camp pushes back hard: demand is enormous and growing, you'll never be jobless, the physiology is deeply satisfying, and the money is fine once you add a directorship or ownership stake, and they argue the field is unfairly maligned and that people who genuinely like the physiology are very happy. The most common practical advice: choose nephrology because you love the medicine, not the prestige or paycheck; scout jobs with directorship/partnership tracks; and beware pure-volume "dialysis-mill" roles that maximize burnout.

Voices from the field. Paraphrased from public writing, with links to the originals:

  • A nephrologist writing for KevinMD argues the field's post-2008 recruitment slump stems from an "underpaid and overworked" reputation and being poorly understood even inside medicine, but that its real strength is versatility (nephrologists can be physiologists, clinicians, educators, administrators, leaders), and that the intellectual depth brings genuine joy.20
  • A nephrologist writing for SHE-MD describes deliberately ignoring the online negativity about pay and "difficult patients," finding the physiology (growing confident managing complex hyponatremia) and the deep longitudinal patient bonds profoundly rewarding, and notes the field is actively shifting away from high-volume burnout models toward interventional, non-clinical, and business-leadership pathways for fellows.21
  • A Healio recruitment Q&A frames the crisis economically: applicant numbers fell ~37% over 15 years even as positions grew ~33%, and inflation-adjusted nephrology pay has fallen roughly 20–30%, so cardiology, GI, and even fellowship-free hospitalist roles out-compete it financially, with proposed fixes including earlier med-school exposure, shortened combined training, better dialysis/CKD reimbursement, and expanded APP roles.22
  • ASN's match reporting documents the "recovery-with-caveats" picture: the AY 2025 match saw matched fellows rise ~13% even as only 58% of programs filled completely and the candidate-to-position ratio sat at ~0.74 (more slots than applicants).23

Why people choose it / why people leave

Why choose it: you genuinely love renal physiology, acid-base, and electrolytes, since the mechanistic reasoning is the daily work · you want to be the go-to consultant for the sickest, most multi-organ-complex patients · you value long-term continuity (dialysis/CKD patients over years) · you want ironclad job security and rising demand · the fellowship is reachable, one of the least competitive IM subspecialties to match · income upside exists if you build in directorships and ownership.

Why leave or avoid it: pay lags procedural IM subspecialties (cardiology, GI) substantially while workload is heavy, and the pay-to-effort ratio is the field's central complaint · weekend and holiday dialysis rounding plus busy urgent consults erode schedule control · high administrative burden and corporate-dialysis pressure on independent practice · inflation-adjusted pay has fallen over 15 years · the opportunity cost of two extra fellowship years against a hospitalist salary is real.

Best fit if: you were the person who actually enjoyed the renal physiology block · you're motivated by intellectual mastery and patient continuity more than by pay or lifestyle · you're comfortable with chronically ill, high-mortality patients and don't need tidy fixes · you want strong demand with income upside you can build via directorships/ownership.

Not for you if: you want maximal compensation-per-hour or a controllable-schedule specialty · you dislike weekend rounding and busy call · you prefer procedures and quick wins over longitudinal complexity · you're chasing prestige or competitiveness signaling.

The FLI angle — Nephrology for first-gen, low-income & immigrant students

Nephrology is one of the most strategically interesting fields for FLI trainees, because its central weakness (it underfills) is, from the applicant's side, a genuine door.

Where nephrology fits FLI realities well:

  • It is one of the most reachable subspecialties in all of medicine. Because nephrology underfills, at ~0.77 applicants per position with ~1 in 3 slots empty, it is attainable for IMGs, US-IMGs, DOs, and graduates of less-resourced residency programs. Where cardiology and GI demand top-tier research and pedigree, nephrology is reachable on the strength of clinical performance and genuine interest, a real lever for a first-gen or immigrant trainee without elite connections. The demographics bear this out: a majority of fellows are IMGs and a meaningful share are DOs.418
  • Ironclad job security and rising demand. The CKD/ESRD/diabetes/hypertension burden is large and growing, and the workforce is aging, so nephrologists rarely struggle to find work. That stability is worth a lot to someone who needs a reliable career rather than a gamble.17
  • Real income paths beyond base salary. Dialysis medical-directorship stipends, which stack across units, joint-venture and ownership stakes, and non-clinical and administrative roles can lift total compensation well above the clinical median over time, a way to build income even though the base is modest.117

Risks to name squarely (the pay paradox):

  • Nephrology pays less than the procedural IM subspecialties. Roughly a mid-$300Ks median against ~$500K+ for cardiology and GI, while carrying heavy workload and weekend rounding. Inflation-adjusted pay has fallen ~20–30% over 15 years.622
  • The opportunity cost is real. For an FLI trainee weighing debt, two extra fellowship years for pay a hospitalist can approach without them is a serious tradeoff. The financial case improves mainly if you deliberately build in directorship and ownership income, and it is not automatic.
  • The economics are shifting (KCC value-based cutbacks, upstream drug effects on dialysis volume), so the income model you'd train under is changing under your feet.1614

Bottom line for FLI: nephrology trades raw pay for accessibility + security + upside-if-you-build-it. If the door to the higher-paying, pedigree-gated subspecialties is closed to you, nephrology is a genuinely open, stable, physiology-rich path, but go in eyes-open about the pay ceiling, the weekend obligation, and the fact that the best money comes from directorships and ownership you have to assemble yourself.

Sub-subspecialties & fellowships (the +1-year paths)

None are required to practice general nephrology; each is an additional year (or program-based training) that reshapes the work and, sometimes, the economics.

  • Transplant nephrology (+1 yr) manages kidney-transplant recipients (immunosuppression, rejection, donor evaluation), largely academic and center-based, and cognitive. Notably, compensation is at or below general nephrology despite the extra training, at a mean ~$274K and median ~$262K in one 2022 survey, and the satisfaction data are sobering: 55% satisfied, 43% burned out, 80% felt pay was unfair, and 70% lacked clarity on how it was structured. A clear example of extra training that doesn't pay for itself in dollars.24 ⟳
  • Interventional nephrology (~1 yr, not ACGME-accredited) is the procedural niche: dialysis-access placement and management (fistula/graft angioplasty, thrombectomy, tunneled and PD catheters, access ultrasound). This is the main way nephrologists capture procedural revenue. Reported average ~$279K–$300K+ base plus production bonus, with a high ceiling for busy operators who own access-center time, the field's procedural upside.25 ⟳
  • Critical care nephrology. Bridges the ICU and the kidney: AKI, CRRT, and the sickest multi-organ-failure patients.
  • Glomerular disease / onconephrology. Complex immune-mediated kidney disease (glomerulonephritis) and the intersection of cancer/cancer-therapy and the kidney; highly cerebral, referral-based, often academic.

Fun facts

  • Dialysis never takes a holiday. Nephrologists round on in-center hemodialysis patients on weekends and holidays, making it one of the few IM fields with truly year-round patient obligations.
  • Nephrology is frequently voted, in trainee surveys and online, the most intellectually difficult IM subspecialty, and is simultaneously among the least competitive to match into. Difficulty and competitiveness are inversely correlated here.
  • There are literally more fellowship slots than applicants, and the candidate-to-position ratio has run below 1.0 for years (~0.77 in the AY 2026 match).
  • A large slice of a nephrologist's income can come from an administrative role, serving as medical director of a dialysis unit, rather than direct patient billing.
  • The kidney is the body's master homeostat, and nephrologists are semi-jokingly described as the physicians most comfortable doing algebra at the bedside, reconciling sodium, water, potassium, and pH at once.
  • New CKD/cardiorenal drugs (SGLT2 inhibitors, finerenone, GLP-1s) are actively reshaping the field's economics by delaying dialysis and pushing care upstream toward early-CKD management.

Sources

Footnotes

  1. Nephrology training path, 2-year (24-month) ACGME fellowship requirement, IM-residency prerequisite, and ABIM certification pathway. ACGME, Program Requirements for Graduate Medical Education in Nephrology (2026), §4.1: "The educational program in nephrology must be 24 months in length." https://www.acgme.org/globalassets/pfassets/programrequirements/2026-prs/148_nephrology_2026.pdf ; ABIM Nephrology certification/procedural requirements (https://blog.abim.org/nephrology-certification-procedural-requirements-call-for-comment/). Re-sourced 2026-08-16: this cited ASN's "Training and Certification" page, which now returns 404, as does ASN's whole /training/ section. The 24-month figure is set by the ACGME rather than by the society, so the requirement document is both the primary source and the durable one. ↩ ↩2 ↩3 ↩4 ↩5

  2. 152 ACGME-accredited adult nephrology programs. ACGME Data Resource Book, Academic Year 2024–2025 (2026 release). https://www.acgme.org/globalassets/pfassets/publicationsbooks/2024-2025_acgme_databook_document.pdf ↩

  3. Transplant nephrology (~1 yr; ASN/AST TNFTAP accreditation, proposed ACGME move) and interventional nephrology (~1 yr; program-based/ASDIN, not ACGME-accredited). https://txnephaccreditation.org/fellowship-program-details ; ASN/AST ACGME application materials (https://www.acgme.org/globalassets/pfassets/proposalreviewandcomment/asn-ast-complete-transplant-nephrology-acgme-application-materials.pdf). ⟳ ↩

  4. NRMP, Results and Data: Specialties Matching Service, 2026 Appointment Year (Feb 2026), Tables 1A and 2 — Nephrology: 186 programs, 501 positions offered, 333 filled (66.5%), 168 positions unfilled across 97 programs; 386 applicants, so 86.3% of those who ranked it matched (~0.77 applicant-to-position). Matched-fellow background: US MD 26.1%, US DO 15.6%, US IMG 18.3%, non-US IMG 39.9%, total IMG 58.2%. https://www.nrmp.org/wp-content/uploads/2026/02/SMS_Results_and_Data_Report2026.pdf. ASN's own "First Look: AY 2026 Match" (https://data.asn-online.org/posts/ay_2026_match/index.html) reports 331 filled against NRMP's 333 and a 341-applicant denominator against NRMP's 386; the NRMP report is the primary series and is used here. Corrected 2026-08-17: the dashboard, the competitiveness section, the FLI section and a fun fact all printed an applicant-to-position ratio of ~0.68, which is ASN's 341-applicant numerator over NRMP's 501 positions — the two series mixed in exactly the way this footnote says they are not. All five now read ~0.77, from NRMP throughout. ⟳ ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7

  5. 2025 Medicine & Pediatric Specialties Match overall (40 subspecialties, 85.7% fill) and lowest-fill cluster (Geriatrics ~38.9%, Adult ID ~60.9%, Addiction ~63.8%, Nephrology ~66%); most-competitive at/near 100% (Cardiology, GI, Heme/Onc). NRMP press release and results (Dec 2025). https://www.nrmp.org/about/news/2025/12/nrmp-celebrates-results-for-the-2025-medicine-and-pediatric-specialties-match/ ; https://www.nrmp.org/match-data/2025/12/2025-medicine-and-pediatric-specialties-match-results/ ⟳ ↩ ↩2

  6. National average (~$312K Medscape 2023 → ~$359K Medscape 2026, 19th/29; ~$367K Doximity 2025/Medscape 2025), ranking below procedural IM subspecialties, and overall +3% to +3.7% 2025 growth. Doximity 2025 Physician Compensation Report (https://www.doximity.com/reports/physician-compensation-report/2025); Medscape 2026 ranking via Becker's Hospital Review (https://www.beckershospitalreview.com/compensation-issues/29-physician-specialties-ranked-by-annual-compensation-medscape/); Fierce Healthcare on Medscape 2025 (https://www.fiercehealthcare.com/providers/physician-compensation-3-2025-not-all-specialties-saw-raises-medscape). ⟳ ↩ ↩2 ↩3 ↩4 ↩5

  7. Percentile career arc, employment-model/academic-vs-private ordering (private ~$370K > hospital ~$344K > academic ~$323K; W-2 ~$306K; owner/partner ~$489K), and top-metro figures. Physicians Thrive, "Nephrologist Salary" (2025, aggregating Medscape/AAMC/AMGA/aggregators). https://physiciansthrive.com/physician-compensation/nephrologist-salary/ ⟳ ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7 ↩8

  8. Pay-paradox framing (cognitive/E&M nature; hospitalist opportunity cost; low fill/IMG reliance; "compensation broke into top-five job attributes"). ASN/Kidney News 2024 Nephrology Fellow Survey (https://www.kidneynews.org/view/journals/kidney-news/17/1/article-p1_2.xml, 2025); White Coat Investor, "How Much Do Nephrologists Make?" (https://www.whitecoatinvestor.com/nephrologists-salary/). ↩ ↩2

  9. Benchmark percentiles (25th ~$225K, median ~$290K, 75th–90th ~$375K+), median ~5,800 wRVU at ~$50/wRVU, and MGMA ~$384,596 (2023). FastRVU Nephrology (educational, MGMA-style — verify exact cutoffs) (https://fastrvu.com/specialties/nephrology); White Coat Investor (https://www.whitecoatinvestor.com/nephrologists-salary/); MGMA reports paywalled (https://www.mgma.com/2025-provider-compensation). ⟳ Corrected 2026-08-17: a figure of this kind stays with the host named rather than being removed, so the percentile ladder now names FastRVU in the visible sentence instead of calling itself "benchmark-tool percentiles (MGMA-style)." The MGMA-style label is off the body, because a model that resembles a licensed survey is still not one, and this site's ortho family had the same wording standing in for a source it did not have. The ~$384,596 figure keeps its separate MGMA attribution, which reaches this page through White Coat Investor rather than through the aggregator. ↩ ↩2

  10. Graduating-fellow median base: $200K (2021) → $219.5K (2022) → $231K (2023) → $240K (2024). ASN/Kidney News 2024 Nephrology Fellow Survey. https://www.kidneynews.org/view/journals/kidney-news/17/1/article-p1_2.xml (2025). ⟳ ↩

  11. Removed 2026-08-13. This footnote priced a dialysis medical directorship at ~$86,452 a year with a full percentile ladder, entirely from ZipRecruiter job postings. No compensation survey prices a dialysis medical directorship separately, which matters given how load-bearing the stipend is to nephrology's economics — the structure of the lever is well documented and its level is not. DaVita and Fresenius as dominant chains, and the stackable per-unit structure, are unaffected. Original citation: ZipRecruiter, "Dialysis Medical Director Salary" (July 2026). https://www.ziprecruiter.com/Salaries/Dialysis-Medical-Director-Salary ⟳ Corrected 2026-08-17: the body still printed the removed average and its percentile ladder while citing this footnote for them, so the retraction had reached the footnote and not the reader. The figures are now out of the body as well. ↩ ↩2

  12. Fair-market-value / Stark & Anti-Kickback requirements for directorship arrangements. VMG Health case study (https://vmghealth.com/case-studies/dialysis-medical-director-compensation-arrangement/); HealthLeaders/MGMA on medical-director pay variability (https://www.healthleadersmedia.com/finance/mgma-medical-director-duties-compensation-vary-widely). ↩

  13. Rural/underserved effective-pay premium (recruitment-driven) and locum rates ($125–$200/hr; illustrative annualized ~$370K–$435K). Barton Associates, "Nephrologist Salary Guide" (2026). https://www.bartonassociates.com/nephrologist-salary-guide-2/ — directional; verify specific rural premium. ⟳ ↩ ↩2

  14. New CKD/cardiorenal drugs (SGLT2 inhibitors, finerenone, GLP-1s) shifting revenue upstream. MedCity News, value-based nephrology (2025). https://medcitynews.com/2025/07/from-fee-for-service-to-value-based-care-enhancing-outcomes-in-nephrology/ — directional, verify quantitative impact. ↩ ↩2

  15. Home-dialysis push (Advancing American Kidney Health EO; CMS ETC model) changing the directorship/rounding revenue mix. Fresenius, ETC & KCC value-based care models. https://freseniusmedicalcare.com/en-us/insights/articles/etc-kcc-value-based-care-models/ ↩

  16. CMS Kidney Care Choices (KCC) rework (May 28, 2025): KCF option ends Dec 31, 2025; $15,000/transplant bonus eliminated 2026; CKD quarterly capitation cut ~50%; other options extended to 2027; ~$304M net losses. Jones Day (https://www.jonesday.com/en/insights/2025/07/cms-updates-kidney-care-choices-model, 2025); Fierce Healthcare (https://www.fiercehealthcare.com/payers/cms-reworks-kidney-care-choices-model-extends-lifespan, 2025); successor LEAD model anticipated (Benesch Law, https://www.beneschlaw.com/insight/the-lead-model-kidney-cares-value-based-care-journey-leads-here-may-2026/). ⟳ ↩ ↩2

  17. Lifestyle (~50 hrs/wk, fragmented sites, weekend/holiday dialysis rounding, busy cognitive call, ~18 hrs/wk paperwork), wellbeing (burnout drivers = admin/workload; ~43% feel fairly paid), and job security/demand. Medscape Physician Lifestyle & Compensation/Burnout reporting (2023–2024) via research synthesis; SalaryDr "U.S. Nephrologist Salary 2026" (https://www.salarydr.com/specialty/nephrology). https://www.medscape.com/sites/public/lifestyle/2024 ; https://www.medscape.com/sites/public/physician-comp/2024 ⟳ SalaryDr panel size: n=33. A self-selected physician panel; the n is disclosed here because it is what the figure rests on. A second, freely readable instrument: the AMA's 2025 Organizational Biopsy (~19,000 physicians, 38 states) puts Nephrology at 29.3% against a 41.9% all-physician average, https://www.ama-assn.org/practice-management/physician-health/these-9-physician-specialties-report-highest-burnout-rates. It is primary where Medscape reaches this page through relays, and its baseline sits seven points below Medscape's 49% — the two never belong in the same sentence, and a cross-specialty rank must name which survey it comes from. Corrected 2026-08-17: the dashboard and the wellbeing section characterized burnout as "middle-to-high" and leaned on Medscape's 49% all-physician figure for cross-specialty placement, while AMA — the instrument this footnote names as primary — publishes a nephrology row at 29.3% and lists it among the six lowest. Both now state AMA's figure. The retracted "~69% would choose medicine again" also came out of this scope line, since the body says no such rate has been published since about 2019. ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7 ↩8 ↩9 ↩10 ↩11

  18. 2025 ASN Nephrology Fellow Survey (adult fellows, N=339): women ~39%, IMG ~58%, DO ~22% of US grads; URiM ~6% Black, ~11% Hispanic/Latino. ASN Data, "2025 ASN Nephrology Fellow Survey: First Look." https://data.asn-online.org/posts/2025_fellow_survey/ (2025). ⟳ ↩ ↩2 ↩3 ↩4 ↩5

  19. Who gravitates / culture (physiology-driven, consultant-for-the-complex, continuity-oriented). Research synthesis of trainee and physician forums, including r/nephrology and Student Doctor Network, and of physician essays (paraphrased, no quotes). Corrected 2026-08-18: an AAMC Careers in Medicine nephrology profile was cited first here. That address now redirects to the Residency Explorer tool, and the last public capture of it carried a one-sentence board definition of the specialty with every other field left unpublished, so it never supported the temperament description this note covers. It has been removed. ↩

  20. Nupur Gupta, MD — "A case for nephrology," KevinMD (2020). https://kevinmd.com/2020/02/a-case-for-nephrology.html ↩

  21. Jia Hwei Ng, MD — "Why Nephrology?," SHE-MD. https://www.shemd.org/post/why-nephrology1 ↩

  22. Healio Q&A on nephrology recruitment (2025) — applicant numbers down ~37% over 15 years, positions up ~33%, inflation-adjusted pay down ~20–30%, hospitalist/cardiology/GI out-competing financially. https://www.healio.com/news/nephrology/20250725/qa-what-is-driving-low-recruitment-in-nephrology (2025). ↩ ↩2

  23. ASN First Look: AY 2025 Match — 362 matched (+13%), 73% of 496 positions filled, 58% of programs filled completely, candidate-to-position ~0.74. https://data.asn-online.org/posts/ay_2025_match/ (2025). ↩

  24. Transplant nephrology compensation/satisfaction: mean ~$274,460, median ~$261,813 (at/below general nephrology); 55% satisfied, 43% burnout, 80% felt pay unfair, 70% lacked clarity on structure. PMC/CJASN Transplant Nephrologist Salary & Satisfaction Survey (2022). https://pmc.ncbi.nlm.nih.gov/articles/PMC9625100/ ⟳ ↩

  25. Interventional nephrology — dialysis-access procedural niche; reported average ~$279,300 (aggregator) to $300K+ base plus production bonus, high ceiling for busy operators. Comparably (https://www.comparably.com/salaries/salaries-for-interventional-nephrologist, 2025 — aggregator, verify); Salary.com posting ($300K base + production) (https://www.salary.com/job/masc-medical/interventional-nephrologist-300k-salary-plus-production-bonus/j202306072348509933270). ⟳ On Salary.com: its CompAnalyst benchmark is HR-reported employer survey data blended with job-posting data, not a physician panel. It is base-weighted and so runs low against total-compensation surveys, and it is used here for percentile structure rather than for levels. ↩

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