Infectious Disease Physician vs Internal Medicine Physician

Internal Medicine Physician has 13.8 times as many registry records as Infectious Disease Physician: 149,962 against 10,858. Each count is the NPPES records whose primary taxonomy is the specialty, so it measures how providers describe their main practice, not everyone trained in it.

CMS NPPES, file of Aug 9, 2026; 2023 Census population estimates · method

Infectious Disease Physician: 10,858 records in 54 states

California1,119
New York970
Florida760
Texas674
Pennsylvania545

Infectious Disease Physician nationwide →

Internal Medicine Physician: 149,962 records in 56 states

California17,696
New York12,067
Florida10,151
Texas9,175
Pennsylvania7,300

Internal Medicine Physician nationwide →

By state, with records per 100,000 residents

State	Infectious Disease Physician	Internal Medicine Physician	Per 100,000 (first)	Per 100,000 (second)
California	1,119	17,696	2.9	45.4
New York	970	12,067	5.0	61.7
Florida	760	10,151	3.4	44.9
Texas	674	9,175	2.2	30.1
Pennsylvania	545	7,300	4.2	56.3
Illinois	464	7,238	3.7	57.7
Massachusetts	487	6,825	7.0	97.5
Michigan	301	5,735	3.0	57.1
Ohio	350	5,277	3.0	44.8
New Jersey	375	4,632	4.0	49.9
North Carolina	287	4,056	2.6	37.4
Maryland	410	3,904	6.6	63.2
Georgia	351	3,911	3.2	35.5
Virginia	239	3,599	2.8	41.6
Washington	263	3,079	3.4	39.4
Arizona	176	2,853	2.4	38.4
Minnesota	216	2,632	3.8	45.9
Connecticut	202	2,623	5.6	72.5
Missouri	212	2,604	3.4	42.0
Tennessee	194	2,596	2.7	36.4
Indiana	162	2,109	2.4	30.7
Wisconsin	171	2,078	2.9	35.2
Oregon	127	2,116	3.0	50.0
Colorado	182	2,046	3.1	34.8
South Carolina	119	1,881	2.2	35.0
Louisiana	128	1,749	2.8	38.2
Alabama	112	1,705	2.2	33.4
Kentucky	111	1,526	2.5	33.7
Nevada	64	1,229	2.0	38.5
Oklahoma	65	1,115	1.6	27.5
Rhode Island	66	1,033	6.0	94.3
Kansas	66	1,010	2.2	34.3
District of Columbia	110	901	16.2	132.7
Mississippi	38	972	1.3	33.1
Iowa	75	871	2.3	27.2
Hawaii	42	902	2.9	62.9
Nebraska	62	813	3.1	41.1
New Mexico	47	770	2.2	36.4
Arkansas	38	768	1.2	25.0
West Virginia	46	754	2.6	42.6
Utah	63	664	1.8	19.4
New Hampshire	49	673	3.5	48.0
Delaware	32	600	3.1	58.1
Maine	35	597	2.5	42.8
Idaho	29	453	1.5	23.1
Montana	24	324	2.1	28.6
Vermont	19	326	2.9	50.4
South Dakota	24	247	2.6	26.9
North Dakota	17	245	2.2	31.3
Alaska	12	177	1.6	24.1
Wyoming	6	134	1.0	22.9

Source: CMS NPPES (NPPES files on CMS.gov), primary NUCC taxonomy by practice state; 2023 population estimates (census.gov).

Common questions

How many Infectious Disease Physician providers are there vs Internal Medicine Physician?

There are 10,858 Infectious Disease Physician and 149,962 Internal Medicine Physician records in the CMS NPPES registry, counted by primary taxonomy.

Which specialty is spread across more states?

Internal Medicine Physician has records in 56 states and territories, against 54.

Where is the data from?

Provider counts are from the CMS National Plan and Provider Enumeration System (NPPES). Per-capita rates use 2023 Census population estimates.

Two specialties are not substitutes: scope of practice, training and the conditions treated differ. More comparisons →

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of the NPPES file of Aug 9, 2026.