Infectious Disease Physician providers in the U.S.
10,858 NPPES records list infectious disease physician as their primary taxonomy, about 3.2 per 100,000 residents; District of Columbia and Massachusetts have the most per resident. 7,388 of them appear in the Medicare Part D prescriber file: a registry record is not proof of an active practice.
What taxonomy code 207RI0200X means
207RI0200X is the National Uniform Claim Committee code for Internal Medicine, Infectious Disease, in the grouping Allopathic & Osteopathic Physicians. 10,858 NPPES records list it as their primary taxonomy (file of Aug 9, 2026).
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
Source: NUCC Health Care Provider Taxonomy code set, definition as NUCC publishes it (nucc.org); counts from CMS NPPES.
Most per resident: the 8 highest
Source: CMS NPPES, primary taxonomy 207RI0200X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.
New York has the most, 343
Source: CMS NPPES, primary taxonomy 207RI0200X by practice city, file of Aug 9, 2026.
All 51 by state
| State | Records | Per 100,000 |
|---|---|---|
| Alabama | 112 | 2.2 |
| Alaska | 12 | 1.6 |
| Arizona | 176 | 2.4 |
| Arkansas | 38 | 1.2 |
| California | 1,119 | 2.9 |
| Colorado | 182 | 3.1 |
| Connecticut | 202 | 5.6 |
| Delaware | 32 | 3.1 |
| District of Columbia | 110 | 16.2 |
| Florida | 760 | 3.4 |
| Georgia | 351 | 3.2 |
| Hawaii | 42 | 2.9 |
| Idaho | 29 | 1.5 |
| Illinois | 464 | 3.7 |
| Indiana | 162 | 2.4 |
| Iowa | 75 | 2.3 |
| Kansas | 66 | 2.2 |
| Kentucky | 111 | 2.5 |
| Louisiana | 128 | 2.8 |
| Maine | 35 | 2.5 |
| Maryland | 410 | 6.6 |
| Massachusetts | 487 | 7.0 |
| Michigan | 301 | 3.0 |
| Minnesota | 216 | 3.8 |
| Mississippi | 38 | 1.3 |
| Missouri | 212 | 3.4 |
| State | Records | Per 100,000 |
|---|---|---|
| Montana | 24 | 2.1 |
| Nebraska | 62 | 3.1 |
| Nevada | 64 | 2.0 |
| New Hampshire | 49 | 3.5 |
| New Jersey | 375 | 4.0 |
| New Mexico | 47 | 2.2 |
| New York | 970 | 5.0 |
| North Carolina | 287 | 2.6 |
| North Dakota | 17 | 2.2 |
| Ohio | 350 | 3.0 |
| Oklahoma | 65 | 1.6 |
| Oregon | 127 | 3.0 |
| Pennsylvania | 545 | 4.2 |
| Rhode Island | 66 | 6.0 |
| South Carolina | 119 | 2.2 |
| South Dakota | 24 | 2.6 |
| Tennessee | 194 | 2.7 |
| Texas | 674 | 2.2 |
| Utah | 63 | 1.8 |
| Vermont | 19 | 2.9 |
| Virginia | 239 | 2.8 |
| Washington | 263 | 3.4 |
| West Virginia | 46 | 2.6 |
| Wisconsin | 171 | 2.9 |
| Wyoming | 6 | 1.0 |
In federal data
- NUCC code207RI0200X · Internal Medicine
- Size rank90th of 688 specialties by records (0.15% of all)
- In its family7th of 31 Internal Medicine codes, 3.5% of the family
- Part D prescribers7,388 (68% of records)
- Part D claims689 a year per prescriber, on average (137th of 496)
- Industry payments3,895 physicians paid $17.0M in 2024, $4K each on average
- Concentration8 states hold half of all records
Source: CMS NPPES; Medicare Part D Prescriber PUF; CMS Open Payments 2024. Presence in these files is not a quality judgment.
A sample of infectious disease physician records
- Carlos Lopez, M.D.Atlanta, GA1285637231
- Homer Abiad, M.D.Oak Forest, IL1871596817
- Gregory Thompson, MDChicago, IL1114920311
- James Sizemore, MDChattanooga, TN1124021340
- Fawad Tanvir, MDSalt Lake City, UT1164425294
- Richard Levine, M.D.Miami, FL1497758502
- Marvin Fojtasek, MDAddison, TX1669475737
- Philip Brachman, MDAtlanta, GA1649273798
- James Nora, MDLincoln, NE1821091588
- Charles Schleupner, MDSalem, VA1023011962
- Eric Reines, M.D.Alexandria, VA1700889342
- Cristian Speil, MDArlington Heights, IL1346243730
- Monica Parise, M.D.Atlanta, GA1083617401
- Pornthep Wattanamano, MDSan Diego, CA1295738516
- Johanna Brown, M.D.Fort Myers, FL1346243649
- Robert Holzman, M.DNew York, NY1689677007
Registry order, not a ranking. Search by name to find one provider.
Common questions
Where does the large Infectious Disease Physician headcount concentrate?
10,858 Infectious Disease Physician NPIs span 54 states; California alone holds 1,119. Top metros include New York, NY; Boston, MA; Chicago, IL; Baltimore, MD. Nationally this is 90th of 688 NUCC codes.
How large is Infectious Disease Physician's Open Payments footprint?
CMS Open Payments 2024 lists 3,895 Infectious Disease Physician physicians totaling $17.0M (61,589 payments; average $4K, 100th of 470). Presence in Open Payments is not a quality judgment.
How heavy is Infectious Disease Physician Part D prescribing at scale?
Among Infectious Disease Physician NPIs, 7,388 appear in the Medicare Part D Prescriber PUF (average 689 claims and $589K drug cost per prescriber; 137th of 496 specialties by average claims). Non-prescribing clinicians in the same NUCC code are still in NPPES.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy (nucc.org); Medicare Part D Prescriber PUF; CMS Open Payments 2024. Counts are self-designated primary taxonomy, not board certification.
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 Aug 9, 2026.