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Internal Medicine Providers - NPI Directory
Active Internal Medicine providers 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.
389,302
providers with an NPI
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Internal Medicine by state
California 42,517 New York 31,959 Florida 30,573 Texas 26,608 Pennsylvania 18,829 Illinois 16,860 Massachusetts 14,270 Michigan 13,722 New Jersey 13,719 Ohio 13,472 Maryland 11,238 North Carolina 11,198 … 39 more states below …
All states, A-Z
| State | Providers |
|---|---|
| Internal Medicine in Alabama | 4,488 |
| Internal Medicine in Alaska | 476 |
| Internal Medicine in Arizona | 7,859 |
| Internal Medicine in Arkansas | 2,193 |
| Internal Medicine in California | 42,517 |
| Internal Medicine in Colorado | 5,966 |
| Internal Medicine in Connecticut | 6,023 |
| Internal Medicine in Delaware | 1,345 |
| Internal Medicine in District of Columbia | 2,039 |
| Internal Medicine in Florida | 30,573 |
| Internal Medicine in Georgia | 10,405 |
| Internal Medicine in Hawaii | 1,854 |
| Internal Medicine in Idaho | 1,133 |
| Internal Medicine in Illinois | 16,860 |
| Internal Medicine in Indiana | 5,993 |
| Internal Medicine in Iowa | 2,127 |
| Internal Medicine in Kansas | 2,426 |
| Internal Medicine in Kentucky | 4,421 |
| Internal Medicine in Louisiana | 4,923 |
| Internal Medicine in Maine | 1,430 |
| Internal Medicine in Maryland | 11,238 |
| Internal Medicine in Massachusetts | 14,270 |
| Internal Medicine in Michigan | 13,722 |
| Internal Medicine in Minnesota | 6,195 |
| Internal Medicine in Mississippi | 2,428 |
| Internal Medicine in Missouri | 6,864 |
Taxonomy codes for Internal Medicine
207R00000X Internal Medicine Physician 191,393 207RA0401X Addiction Medicine (Internal Medicine) Physician 1,040 207RA0000X Adolescent Medicine (Internal Medicine) Physician 398 207RA0002X Adult Congenital Heart Disease Physician 140 207RA0001X Advanced Heart Failure and Transplant Cardiology Physician 1,232 207RA0201X Allergy & Immunology (Internal Medicine) Physician 742 207RC0000X Cardiovascular Disease Physician 36,376 207RI0001X Clinical & Laboratory Immunology (Internal Medicine) Physician 43 207RC0001X Clinical Cardiac Electrophysiology Physician 4,004 207RC0200X Critical Care Medicine (Internal Medicine) Physician 7,231 207QB0505X Diabetology (Internal Medicine) Physician 5 207RE0101X Endocrinology, Diabetes & Metabolism Physician 12,930 207RG0100X Gastroenterology Physician 26,110 207RG0300X Geriatric Medicine (Internal Medicine) Physician 6,380 207RH0000X Hematology (Internal Medicine) Physician 1,572 207RH0003X Hematology & Oncology Physician 17,524 207RI0008X Hepatology Physician 363 207RH0002X Hospice and Palliative Medicine (Internal Medicine) Physician 3,261 207RH0005X Hypertension Specialist Physician 33 207RI0200X Infectious Disease Physician 13,206 207RI0011X Interventional Cardiology Physician 8,478 207RM1200X Magnetic Resonance Imaging (MRI) Internal Medicine Physician 59 207RX0202X Medical Oncology Physician 6,375 207RN0300X Nephrology Physician 17,538 207RB0002X Obesity Medicine (Internal Medicine) Physician 327 207RP1002X Physician Nutrition Specialist (Internal Medicine) 6 207RP1001X Pulmonary Disease Physician 19,624 207RR0500X Rheumatology Physician 10,191 207RS0012X Sleep Medicine (Internal Medicine) Physician 1,955 207RS0010X Sports Medicine (Internal Medicine) Physician 485 207RT0003X Transplant Hepatology Physician 281
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 389,302 active providers with Internal Medicine as their primary taxonomy.
Source: CMS NPPES (public data). Snapshot 2026-07-13.