Addiction Medicine (Internal Medicine) Physician providers in the U.S.
609 NPPES records list addiction medicine (internal medicine) physician as their primary taxonomy, about 0.2 per 100,000 residents; Vermont and New Hampshire have the most per resident. 401 of them appear in the Medicare Part D prescriber file: a registry record is not proof of an active practice.
What taxonomy code 207RA0401X means
207RA0401X is the National Uniform Claim Committee code for Internal Medicine, Addiction Medicine, in the grouping Allopathic & Osteopathic Physicians. 609 NPPES records list it as their primary taxonomy (file of Aug 9, 2026).
An internist doctor of osteopathy that specializes in the treatment of addiction disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine can obtain a Certificate of Added Qualifications in the field of Addiction 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 207RA0401X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.
Bronx has the most, 16
Source: CMS NPPES, primary taxonomy 207RA0401X by practice city, file of Aug 9, 2026.
All 46 states and D.C. with records, by state
| State | Records | Per 100,000 |
|---|---|---|
| Alabama | 5 | 0.1 |
| Alaska | 1 | 0.1 |
| Arizona | 10 | 0.1 |
| Arkansas | 1 | 0.0 |
| California | 73 | 0.2 |
| Colorado | 10 | 0.2 |
| Connecticut | 14 | 0.4 |
| District of Columbia | 2 | 0.3 |
| Florida | 43 | 0.2 |
| Georgia | 10 | 0.1 |
| Hawaii | 1 | 0.1 |
| Idaho | 2 | 0.1 |
| Illinois | 15 | 0.1 |
| Indiana | 7 | 0.1 |
| Kentucky | 13 | 0.3 |
| Louisiana | 7 | 0.2 |
| Maine | 6 | 0.4 |
| Maryland | 15 | 0.2 |
| Massachusetts | 26 | 0.4 |
| Michigan | 20 | 0.2 |
| Minnesota | 14 | 0.2 |
| Mississippi | 2 | 0.1 |
| Missouri | 6 | 0.1 |
| State | Records | Per 100,000 |
|---|---|---|
| Montana | 1 | 0.1 |
| Nebraska | 1 | 0.1 |
| Nevada | 1 | 0.0 |
| New Hampshire | 7 | 0.5 |
| New Jersey | 27 | 0.3 |
| New Mexico | 5 | 0.2 |
| New York | 68 | 0.3 |
| North Carolina | 10 | 0.1 |
| Ohio | 42 | 0.4 |
| Oklahoma | 3 | 0.1 |
| Oregon | 15 | 0.4 |
| Pennsylvania | 33 | 0.3 |
| Rhode Island | 6 | 0.5 |
| South Carolina | 7 | 0.1 |
| Tennessee | 19 | 0.3 |
| Texas | 7 | 0.0 |
| Utah | 3 | 0.1 |
| Vermont | 4 | 0.6 |
| Virginia | 16 | 0.2 |
| Washington | 10 | 0.1 |
| West Virginia | 2 | 0.1 |
| Wisconsin | 16 | 0.3 |
| Wyoming | 1 | 0.2 |
In federal data
- NUCC code207RA0401X · Internal Medicine
- Size rank315th of 688 specialties by records (0.01% of all)
- In its family19th of 31 Internal Medicine codes, 0.2% of the family
- Part D prescribers401 (65.8% of records)
- Part D claims829 a year per prescriber, on average (100th of 496)
- Industry payments188 physicians paid $331K in 2024, $2K each on average
- Concentration7 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 addiction medicine (internal medicine) physician records
- Charles Herndon, M.D.Anchorage, AK1326062431
- Michael Wilkerson, MDWarrior, AL1265512834
- Peter Baren, M.D.Birmingham, AL1902877483
- Peter LaneBirmingham, AL1740218965
- Jill Billions, MDBirmingham, AL1225007172
- James Harrow, PHD, MDMontgomery, AL1104992411
- Ronald Only, D.O.Jonesboro, AR1710964226
- Herman Singh, M.D.Phoenix, AZ1972038024
- Robert Halligan, MDPhoenix, AZ1962516500
- Mark Keep, MDPhoenix, AZ1609859297
- Michael Loes, M.D.Phoenix, AZ1033247630
- Reyes Topete, MDPhoenix, AZ1487611158
- J Jackson, D.O.Mesa, AZ1942262399
- Gerald Harris, DOPeoria, AZ1689676165
- Charles Brooker, D.O.Peoria, AZ1881823250
- Jay Caldwell, M.D.Tucson, AZ1346519071
Registry order, not a ranking. Search by name to find one provider.
Common questions
How should I read Addiction Medicine (Internal Medicine) Physician's mid-pack national roster?
609 CMS-registered Addiction Medicine (Internal Medicine) Physician providers sit across 47 states; California leads with 73. Leading metros: Bronx, NY; New York, NY; Baltimore, MD; Camden, NJ. Rank 315th of 688 NUCC specialties by headcount.
How does Addiction Medicine (Internal Medicine) Physician show up in Open Payments mid-pack?
CMS Open Payments 2024 lists 188 Addiction Medicine (Internal Medicine) Physician physicians receiving $331K across 2,237 payments (average $2K; 171st of 470 specialties). Not a quality score.
How much Part D prescribing does this specialty do?
Among Addiction Medicine (Internal Medicine) Physician NPIs, 401 appear in the Medicare Part D Prescriber PUF (average 829 claims and $120K drug cost per prescriber; 100th 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.