NPPES file of Aug 9, 2026

Obesity Medicine (Internal Medicine) Physician in California

17 NPPES records list obesity medicine (internal medicine) physician with a practice address in California, 0 per 100,000 residents, the 20th highest rate of 30. Roseville and San Diego have the most; each record links to the provider's NPI and the California license search.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RB0002X · method

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

Roseville has the most, 2

  1. Roseville2
  2. San Diego2
  3. West Hills2
  4. Folsom1
  5. Lakewood1

Obesity Medicine (Internal Medicine) Physician records in California

  1. Arthur Aronson, M.D.San Diego, CA 921011780030122
  2. Jagraj Basi, MDStockton, CA 952071619516531
  3. Jill Blickley, DOSan Francisco, CA 941041730126152
  4. Randall Caldron, MDWest Hills, CA 913071053475822
  5. Melissa Chung, MDSanta Monica, CA 904041285123265
  6. Gerald Cox, MD, MPHLakewood, CA 907121477041333
  7. Quyen Dao, M.D.Tustin, CA 927801932305034
  8. Nicole Grant, MDPalo Alto, CA 943041902007198
  9. Eduardo Grunvald, M.DSan Diego, CA 921031497791339
  10. Ed Hendricks, M.D.Roseville, CA 956611700220092
  11. Anthony Huynh, D.O.Roseville, CA 956611508057522
  12. Stephanie Roberts, M.D.Rancho Cordova, CA 956701629143813
  13. Sooji Rugh, M.D.Mountain View, CA 940431770799538
  14. Harpreet Singh, MDOxnard, CA 930301942258124
  15. Ronnie Stone, M.D.Folsom, CA 956301962640508
  16. Amanda Velazquez, MDLos Angeles, CA 900481689014466
  17. Viktoriya Yanchuk, D.O.West Hills, CA 913071932587169

Source: CMS NPPES, primary taxonomy 207RB0002X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 20 of 30 per resident

  1. Colorado0.1
  2. Idaho0.1
  3. North Carolina0.0
  4. California0.0
  5. Florida0.0
  6. Washington0.0
  7. 50 states and D.C.0.0

Source: CMS NPPES, primary taxonomy 207RB0002X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

70.6% of these records appear in a Medicare file, against 83.0% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. California70.6%
  2. United States83.0%

Obesity Medicine (Internal Medicine) Physician records in California, measured

  • In a Medicare file12 of 17 · 70.6% here, 83.0% nationally
  • In the CMS Doctors and Clinicians file7 · 41.2% here, 63.1% nationally
  • Not updated in five years or more11 · 64.7% here, 41.1% nationally

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RB0002X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

17 NPPES records list obesity medicine (internal medicine) physician (207RB0002X) as their primary taxonomy with a practice address in California: 0 per 100,000 residents against 0 nationally (50 states and D.C.). Roseville has 2 of them (12%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. New York11

The largest states

  1. New York11
  2. Florida9
  3. Massachusetts9
  4. Illinois8
  5. Ohio8

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record is not a license.

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.