Obesity Medicine (Internal Medicine) Physician providers in the U.S.
141 NPPES records list obesity medicine (internal medicine) physician as their primary taxonomy; New Hampshire and New York have the most per resident. 106 of them appear in the Medicare Part D prescriber file: a registry record is not proof of an active practice.
What taxonomy code 207RB0002X means
207RB0002X is the National Uniform Claim Committee code for Internal Medicine, Obesity Medicine, in the grouping Allopathic & Osteopathic Physicians. 141 NPPES records list it as their primary taxonomy (file of Aug 9, 2026).
A physician who specializes in the treatment of obesity demonstrates competency in and a thorough understanding of the treatment of obesity and the genetic, biologic, environmental, social, and behavioral factors that contribute to obesity. The obesity medicine physician employs therapeutic interventions including diet, physical activity, behavioral change, and pharmacotherapy. The obesity medicine physician utilizes a comprehensive approach, and may include additional resources such as dietitians, exercise physiologists, mental health professionals and bariatric surgeons as indicated to achieve optimal results. Additionally, the obesity medicine physician maintains competency in providing pre- peri- and post-surgical care of bariatric surgery patients, promotes the prevention of obesity, and advocates for those who suffer from obesity.
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 207RB0002X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.
Tampa has the most, 4
Source: CMS NPPES, primary taxonomy 207RB0002X by practice city, file of Aug 9, 2026.
All 30 states and D.C. with records, by state
| State | Records | Per 100,000 |
|---|---|---|
| Arizona | 1 | 0.0 |
| California | 17 | 0.0 |
| Colorado | 3 | 0.1 |
| Connecticut | 3 | 0.1 |
| Florida | 9 | 0.0 |
| Georgia | 4 | 0.0 |
| Hawaii | 1 | 0.1 |
| Idaho | 1 | 0.1 |
| Illinois | 8 | 0.1 |
| Indiana | 6 | 0.1 |
| Iowa | 3 | 0.1 |
| Louisiana | 5 | 0.1 |
| Maryland | 2 | 0.0 |
| Massachusetts | 9 | 0.1 |
| Michigan | 2 | 0.0 |
| State | Records | Per 100,000 |
|---|---|---|
| Mississippi | 1 | 0.0 |
| New Hampshire | 3 | 0.2 |
| New Jersey | 3 | 0.0 |
| New York | 11 | 0.1 |
| North Carolina | 5 | 0.0 |
| Ohio | 8 | 0.1 |
| Pennsylvania | 8 | 0.1 |
| South Carolina | 3 | 0.1 |
| Tennessee | 4 | 0.1 |
| Texas | 5 | 0.0 |
| Utah | 2 | 0.1 |
| Virginia | 6 | 0.1 |
| Washington | 3 | 0.0 |
| West Virginia | 2 | 0.1 |
| Wisconsin | 2 | 0.0 |
In federal data
- NUCC code207RB0002X · Internal Medicine
- Size rank485th of 688 specialties by records (0% of all)
- In its family25th of 31 Internal Medicine codes, 0% of the family
- Part D prescribers106 (75.2% of records)
- Part D claims742 a year per prescriber, on average (120th of 496)
- Industry payments80 physicians paid $505K in 2024, $6K 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 obesity medicine (internal medicine) physician records
- Katherine Duncan, M.D.Phoenix, AZ1366762650
- Amanda Velazquez, MDLos Angeles, CA1689014466
- Melissa Chung, MDSanta Monica, CA1285123265
- Gerald Cox, MD, MPHLakewood, CA1477041333
- Randall Caldron, MDWest Hills, CA1053475822
- Viktoriya Yanchuk, D.O.West Hills, CA1932587169
- Arthur Aronson, M.D.San Diego, CA1780030122
- Eduardo Grunvald, M.DSan Diego, CA1497791339
- Quyen Dao, M.D.Tustin, CA1932305034
- Harpreet Singh, MDOxnard, CA1942258124
- Sooji Rugh, M.D.Mountain View, CA1770799538
- Jill Blickley, DOSan Francisco, CA1730126152
Registry order, not a ranking. Search by name to find one provider.
Common questions
Why is Obesity Medicine (Internal Medicine) Physician a thin NUCC code in NPPES?
Only 141 NPIs list Obesity Medicine (Internal Medicine) Physician as primary taxonomy across 31 states (peak California, 17). That is 485th of 688 NUCC codes by headcount. Thin codes are still searchable by NPI; do not treat the low count as a quality signal.
Do the few Obesity Medicine (Internal Medicine) Physician NPIs in Open Payments look unusual?
CMS Open Payments 2024 lists 80 paid Obesity Medicine (Internal Medicine) Physician physicians totaling $505K (1,430 payments; average $6K, 69th of 470 by average). Presence is not a quality judgment; thin specialties often have sparse payment rows.
How much Part D prescribing does this specialty do?
Among Obesity Medicine (Internal Medicine) Physician NPIs, 106 appear in the Medicare Part D Prescriber PUF (average 742 claims and $216K drug cost per prescriber; 120th 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.