The physician shortage lives at residency, not medical school

Ask most applicants why the United States expects a physician shortage and they will say something about medical school being too small. It is a reasonable guess, and it is wrong. American medical schools have been expanding for two decades: class sizes grew, new MD programs opened, and osteopathic schools multiplied. Yet the Association of American Medical Colleges (AAMC), which has published workforce projections for years, still expects the country to be short tens of thousands of physicians by the mid-2030s. The precise figure moves from report to report as the modeling assumptions change, so date the claim whenever you use it.

The reason more students has not meant proportionally more doctors sits one step later in the pipeline. A medical degree, MD or DO, does not by itself let you practice. Every graduate must complete residency training, and the number of residency positions the federal government pays for has been effectively frozen for more than a quarter of a century. Understand that single mechanism and the rest of the story — the projections, the international graduates, the rural clinics that cannot recruit, the arguments about nurse practitioners — snaps into focus. It is also the version that scores in a medical school interview.

Residency is the apprenticeship between graduation and independent practice: three years for family medicine or internal medicine, five or more for surgical fields. Hospitals bear real costs to run these programs, and since Medicare’s creation in 1965 the federal government has offset those costs, making Medicare the largest single funder of graduate medical education (GME). That arrangement handed Washington a lever, and in 1997 it pulled the lever in the wrong direction. The Balanced Budget Act, hunting for savings across Medicare, capped the number of residents the program would fund at each hospital at roughly its 1996 count. Hospitals may train above their cap at their own expense, and many do, but self-funded growth is slow, uneven, and concentrated in wealthier systems.

Congress has loosened the cap only modestly. Appropriations laws passed in the early 2020s funded the first meaningful additions in decades: on the order of a thousand Medicare-supported positions phased in over several years, with a later and smaller tranche weighted toward psychiatry. Set against projections of a shortfall in the tens of thousands, the arithmetic explains itself. As of August 2026, bills to lift the cap further have been introduced repeatedly without becoming law.

One nuance keeps the story honest. In any given year, most graduating US seniors who enter the Match do get a residency position; the bottleneck rarely shows up as a wall of unmatched American graduates. It binds at the level of the system: total funded positions grow slowly, so the country’s output of new physicians grows slowly, no matter how many students the schools upstream produce or how many international graduates apply. That is why ‘build more medical schools’ is an incomplete answer to the shortage — and why an applicant who can say so, calmly and accurately, sounds different from one reciting a headline.

Upstream of the bottleneck, the pipeline has transformed. Osteopathic medicine grew from a modest parallel track into a major one: DO students now make up roughly a quarter of US medical students, as of recent enrollment reporting, new campuses keep opening, and since 2020 MD and DO graduates have trained under a single accreditation system for residency. New allopathic schools have opened as well, including in states projecting the worst shortfalls. And international medical graduates — both Americans who studied abroad and physicians trained in other countries — remain a load-bearing part of the workforce. Roughly one in four practicing US physicians graduated from an international medical school, as of recent workforce data, and IMGs fill a substantial share of positions each cycle, particularly in primary care and in programs that struggle to recruit.

All of these groups converge on the same gate: the National Resident Matching Program. Recent cycles have been the largest on record, with more than forty thousand positions offered in a year as of the most recently published results. Applicant numbers have climbed alongside them, so the ratio has shifted far less than the headline totals suggest.

A national shortfall number hides the sharper problem: doctors are in the wrong places. The Health Resources and Services Administration (HRSA) keeps a running list of Health Professional Shortage Areas, and tens of millions of Americans live somewhere designated short of primary care clinicians, as of its current counts. Rural America carries the worst of it. The mechanism is unglamorous. Physicians tend to practice near where they train, and training is concentrated in urban academic centers. Educational debt and wide income gaps between specialties pull graduates toward procedural fields and away from primary care. And a rural hospital that has never hosted a residency program has no cohort of trainees putting down roots nearby, while standing one up means finding the funding and the teaching capacity first. Shortage and maldistribution compound each other, which is why so many interview questions about the shortage are really questions about geography.

The policy levers under discussion are worth knowing by mechanism rather than by bill number. Congress could raise the Medicare cap; proposals to add funded residency positions have been reintroduced in successive Congresses without passing, as of August 2026. HRSA funds residencies in community clinics through its teaching health center program and repays loans for clinicians who serve in shortage areas through the National Health Service Corps. States fund positions of their own. Immigration policy plays a quiet part too: Conrad 30 waivers let international graduates remain in the country in exchange for years of service in underserved communities. None of these is decisive on its own; each tells you where the system believes its pressure points are.

This topic reaches interviews in predictable costumes. The direct form: ‘Why does the US have a physician shortage?’ or ‘What is one thing you would change about American healthcare?’ The personal form: ‘Would you consider practicing in a rural or underserved area?’ — a question mission-driven schools ask because their funding and purpose often depend on the answer being yes for enough of their class. The policy form: ‘Should nurse practitioners practice independently?’ The depth expected is the depth of this article, not a health-economics seminar. Interviewers want to hear that the constraint sits at residency funding rather than medical school seats, that distribution matters as much as headcount, and that you can hold a contested question without grabbing a side. What separates a strong answer is sequence: mechanism first, magnitude in hedged words, then a view you can actually defend.

Then rehearse it aloud, because written fluency and spoken fluency diverge on exactly this kind of material. The rural-practice question in particular deserves a decided answer before interview day: a hedge invented in the moment sounds like one. Our US interview preparation hub covers the formats these questions arrive in, and a few repetitions against realistic follow-ups — would you really, for how long, what would keep you there — will do more for you than another evening of reading.

The shortage story also does quiet work before you ever reach an interview room. Schools signal their mission in plain sight — rural tracks, primary-care pipelines, community-based campuses — and they filter for applicants whose stories plausibly serve it. That makes school selection part of your answer: our guide to US MD schools is the place to check whose mission your background genuinely fits. Secondary essays ask the rural and underserved questions directly, often word for word; our secondary essay guide shows how to answer them without pandering. And if you are earlier in the process, the full picture — timelines, requirements, strategy — lives in our guide to getting into a US medical school.