Internal Medicine Providers — NPI Directory

386,648 active Internal Medicine providers hold an NPI in the latest NPPES snapshot. Internal Medicine falls under the “Allopathic & Osteopathic Physicians” taxonomy grouping and spans 31 NUCC taxonomy codes. Browse by state, or look a provider up by name or NPI number.

Internal Medicine by state

Internal Medicine in California (42,256)
Internal Medicine in New York (31,802)
Internal Medicine in Florida (30,360)
Internal Medicine in Texas (26,430)
Internal Medicine in Pennsylvania (18,724)
Internal Medicine in Illinois (16,682)
Internal Medicine in Massachusetts (14,186)
Internal Medicine in New Jersey (13,638)
Internal Medicine in Michigan (13,631)
Internal Medicine in Ohio (13,403)
Internal Medicine in Maryland (11,177)
Internal Medicine in North Carolina (11,122)
Internal Medicine in Georgia (10,320)
Internal Medicine in Virginia (9,191)
Internal Medicine in Arizona (7,829)
Internal Medicine in Washington (7,418)
Internal Medicine in Tennessee (7,124)
Internal Medicine in Missouri (6,881)
Internal Medicine in Minnesota (6,152)
Internal Medicine in Connecticut (5,984)
Internal Medicine in Indiana (5,957)
Internal Medicine in Colorado (5,876)
Internal Medicine in Wisconsin (5,282)
Internal Medicine in South Carolina (5,084)
Internal Medicine in Louisiana (4,901)
Internal Medicine in Alabama (4,492)
Internal Medicine in Kentucky (4,409)
Internal Medicine in Oregon (4,401)
Internal Medicine in Puerto Rico (3,456)
Internal Medicine in Nevada (3,283)
Internal Medicine in Oklahoma (3,029)
Internal Medicine in Mississippi (2,398)
Internal Medicine in Kansas (2,366)
Internal Medicine in Arkansas (2,177)
Internal Medicine in Utah (2,143)
Internal Medicine in Iowa (2,101)
Internal Medicine in Rhode Island (2,098)
Internal Medicine in District of Columbia (2,028)
Internal Medicine in West Virginia (1,935)
Internal Medicine in Hawaii (1,835)
Internal Medicine in New Mexico (1,743)
Internal Medicine in Nebraska (1,688)
Internal Medicine in New Hampshire (1,631)
Internal Medicine in Maine (1,432)
Internal Medicine in Delaware (1,331)
Internal Medicine in Idaho (1,120)
Internal Medicine in Montana (866)
Internal Medicine in Vermont (714)
Internal Medicine in South Dakota (661)
Internal Medicine in North Dakota (579)
Internal Medicine in Alaska (474)

Taxonomy codes for Internal Medicine

207R00000X — Internal Medicine Physician (190,260 providers)
207RA0401X — Addiction Medicine (Internal Medicine) Physician (1,026 providers)
207RA0000X — Adolescent Medicine (Internal Medicine) Physician (398 providers)
207RA0002X — Adult Congenital Heart Disease Physician (136 providers)
207RA0001X — Advanced Heart Failure and Transplant Cardiology Physician (1,225 providers)
207RA0201X — Allergy & Immunology (Internal Medicine) Physician (733 providers)
207RC0000X — Cardiovascular Disease Physician (36,182 providers)
207RI0001X — Clinical & Laboratory Immunology (Internal Medicine) Physician (43 providers)
207RC0001X — Clinical Cardiac Electrophysiology Physician (3,973 providers)
207RC0200X — Critical Care Medicine (Internal Medicine) Physician (7,129 providers)
207QB0505X — Diabetology (Internal Medicine) Physician (5 providers)
207RE0101X — Endocrinology, Diabetes & Metabolism Physician (12,834 providers)
207RG0100X — Gastroenterology Physician (25,900 providers)
207RG0300X — Geriatric Medicine (Internal Medicine) Physician (6,343 providers)
207RH0000X — Hematology (Internal Medicine) Physician (1,565 providers)
207RH0003X — Hematology & Oncology Physician (17,382 providers)
207RI0008X — Hepatology Physician (363 providers)
207RH0002X — Hospice and Palliative Medicine (Internal Medicine) Physician (3,216 providers)
207RH0005X — Hypertension Specialist Physician (33 providers)
207RI0200X — Infectious Disease Physician (13,126 providers)
207RI0011X — Interventional Cardiology Physician (8,410 providers)
207RM1200X — Magnetic Resonance Imaging (MRI) Internal Medicine Physician (59 providers)
207RX0202X — Medical Oncology Physician (6,314 providers)
207RN0300X — Nephrology Physician (17,390 providers)
207RB0002X — Obesity Medicine (Internal Medicine) Physician (321 providers)
207RP1002X — Physician Nutrition Specialist (Internal Medicine) (4 providers)
207RP1001X — Pulmonary Disease Physician (19,471 providers)
207RR0500X — Rheumatology Physician (10,106 providers)
207RS0012X — Sleep Medicine (Internal Medicine) Physician (1,947 providers)
207RS0010X — Sports Medicine (Internal Medicine) Physician (485 providers)
207RT0003X — Transplant Hepatology Physician (269 providers)

Frequently asked questions

How do I find a Internal Medicine provider's NPI number?

Search by name with the NPI search, or browse by state below. Every profile shows the provider's NPI, taxonomy code, practice address, and NPPES status.

What taxonomy codes does Internal Medicine use?

Internal Medicine covers 31 NUCC taxonomy codes, including 207R00000X (Internal Medicine Physician). Each code page explains when it applies.

How many Internal Medicine providers are there in the U.S.?

Our latest NPPES snapshot lists 386,648 active providers with Internal Medicine as their primary taxonomy.

Source: CMS NPPES (public data). Snapshot 2026-07-09.