This page compares two distinct NUCC-taxonomy specialties tracked by the CMS National Plan and Provider Enumeration System: Emergency Medical Services (Emergency Medicine) Physician, which currently counts 3,618 enrolled providers across 55 U.S. states and territories, and Emergency Medicine Physician, with 64,463 providers across 56 states. Each clinician on these rosters selected a primary NUCC code at NPI enrollment, so the totals measure how many providers self-identify their primary practice as Emergency Medical Services (Emergency Medicine) Physician or Emergency Medicine Physician rather than the total population ever trained or credentialed in either field — dual-certified clinicians show up under whichever code they registered first.

On national volume, Emergency Medicine Physician carries the larger provider roster (64,463 vs 3,618), and Emergency Medicine Physician has the wider geographic footprint at 56 states versus 55. The top Emergency Medical Services (Emergency Medicine) Physician concentration sits in Michigan (430 providers), while Emergency Medicine Physician peaks in California (6,965). The per-capita columns in the table below normalize each state's raw count against 2023 Census population estimates, which matters because absolute provider counts track population scale first and specialty density second — a small state with a strong training pipeline can out-rank a larger state on per-100K availability.

Use this comparison to understand relative availability, not to judge clinical substitutability — Emergency Medical Services (Emergency Medicine) Physician and Emergency Medicine Physician are distinct specialties with different scopes of practice, training requirements, and conditions they treat, even when their NUCC categories overlap. Important: PlainDoctor is a directory of publicly available CMS government data, not medical advice, a provider rating, or a recommendation about which specialty a patient should consult. Always work with a licensed clinician to determine which specialty is appropriate for your condition, verify any specific provider through the NPPES NPI Registry and the relevant state medical board, and consult the NUCC taxonomy documentation for the formal scope-of-practice definitions behind each specialty code.