Five match cycles. Two degree tracks. One specialty that drew roughly 800 applicants per year. The American Osteopathic Association has published a four-year analysis comparing dermatology match outcomes for osteopathic (DO) and allopathic (MD) medical students between 2020 and 2024 — the first full reporting window after the ACGME/AOA single accreditation system took effect in July 2020.

The study covers every NRMP match cycle from the launch year through the most recently reported cohort. Its purpose is narrow: quantify whether the merged accreditation environment narrowed, widened, or held steady the gap between DO and MD applicants placing into dermatology residencies.

Why the 2020 cutoff matters

Before 2020, osteopathic students sat for a separate match governed by the AOA, and AOA-accredited dermatology programs filled through a parallel track. The single accreditation system folded those programs into ACGME, putting DO and MD graduates into a single applicant pool for the first time.

That structural change reshaped the question. Pre-2020 comparisons measured two parallel pipelines. Post-2020 comparisons measure one pool with two degree credentials.

What the study examines

The AOA paper uses NRMP match data — published annually by the National Resident Matching Program — to break down dermatology placements by degree type for the 2020, 2021, 2022, 2023 and 2024 matches. Outcomes of interest, based on the title's framing, include match rates per applicant, the share of available PGY-1 positions filled by each cohort, and any year-over-year drift across the five cycles.

Dermatology is a useful test case. It sits among the most competitive specialties in the NRMP, with applicant-to-position ratios that historically run above 1.5 to 1, and a SOAP footprint that is small. Small denominator shifts — a few dozen candidates in either direction — can move percentages meaningfully, which makes longitudinal comparison work possible without requiring decade-long datasets.

What changes for program directors

For residency leaders, the operative question is whether the single accreditation system has produced a more level applicant field or whether historical patterns persist. Pre-merger data consistently showed MD applicants placing at higher rates into dermatology than their DO counterparts, with osteopathic graduates more frequently matching into primary care or preliminary positions. The AOA's 2020–2024 window is the first dataset capable of answering, on a year-by-year basis, whether that gap closed.

If DO match rates climbed toward MD rates over the five cycles, that would suggest the structural barrier — the parallel match — was the dominant driver of the prior disparity, not degree credentials themselves. If the gap persisted at a similar magnitude, it would point to other factors: away elective access, research output, board score distributions, or advisor networks that historically differed between the two applicant pools.

What changes for applicants

Osteopathic students advising the Class of 2025 will read this paper looking for one number: the DO match rate into dermatology for the most recent cycle, and the trend line behind it. Allopathic students will look for confirmation — or disruption — of the assumption that MD credentials confer a structural advantage in the most competitive fields.

Both groups should weight a five-cycle trend more heavily than any single year's data. Dermatology cohorts are small enough that one anomalous cycle can swing percentages by several points.

What to watch next

The AOA paper sets a baseline. The next test comes when the 2025 match data lands and the merged-accreditation era enters its sixth year — long enough, finally, to distinguish signal from the residual noise of a transition.