Internal Medicine Taxonomy Code 207R00000X
207R00000X
Level II - Classification
299,150Registered providers
11Medicare specialty
25.1NUCC version
57States & territories
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Code Details for 207R00000X
About Taxonomy Code 207R00000X
The taxonomy code 207R00000X identifies Internal Medicine within the Allopathic & Osteopathic Physicians provider grouping. It is a Level II — Classification code, which names a provider's occupation or service within the broader provider grouping.
NPI records show 299,150 registered providers whose primary or secondary taxonomy is this code. Of these, 55,915 (19%) are registered as organizations and 243,235 (81%) as individual providers. The states with the most internal medicine providers are California (31,447), Florida (22,050), New York (21,823). For Medicare enrollment, it crosswalks to specialty code 11 (Physician/Internal Medicine).
Taxonomy codes are self-selected by the provider based on their education and training; they describe the provider's type and specialty, not the specific services rendered.
Provider Composition & Statistics
299,150Total providers
55,915Organizations 19%
243,235Individuals 81%
98,317Female
144,801Male
117Undisclosed
Gender is recorded for individual providers only; organizations are not gendered. Source: NPPES, last updated 2026-06-21T00:00:00.
View all 299,150 providersInternal Medicine Providers by State
Provider counts by U.S. state and territory. Select a state to open its provider directory.
All states (nationwide)
299,150
Alabama3,186Alaska369American Samoa28Arizona6,006Arkansas1,448California31,447Colorado4,782Connecticut4,615Delaware1,082District Of Columbia1,549Florida22,050Georgia7,983Guam66Hawaii1,555Idaho878Illinois13,917Indiana4,991Iowa2,058Kansas1,822Kentucky3,541Louisiana3,516Maine1,227Mariana Islands14Maryland7,777Massachusetts10,963Michigan11,118Minnesota5,164Mississippi1,794Missouri5,421Montana675Nebraska1,324Nevada2,842New Hampshire1,284New Jersey9,192New Mexico1,449New York21,823North Carolina9,034North Dakota564Ohio9,908Oklahoma2,161Oregon3,959Palau1Pennsylvania13,878Puerto Rico2,114Rhode Island1,734South Carolina4,043South Dakota550Tennessee5,452Texas20,101Utah1,588Vermont558Virgin Islands48Virginia6,964Washington6,047West Virginia1,471Wisconsin4,204Wyoming318
Frequently Asked Questions
207R00000X questionsNPPES lists 299,150 registered providers with this taxonomy code (Internal Medicine).
Both. About 19% of these providers are registered as organizations and 81% as individuals.
It crosswalks to Medicare specialty code 11 (Physician/Internal Medicine).
It is a Level II - Classification code in the NUCC Health Care Provider Taxonomy set.
Use the "Providers by state" directory on this page to open the list of internal medicine providers registered in any U.S. state.
Source: National Uniform Claim Committee (NUCC) Health Care Provider Taxonomy code set, Version 25.1. Provider counts from NPPES. See nucc.org.
