NPPES file of Aug 9, 2026

Internal Medicine Physician in California

17,696 NPPES records list internal medicine physician with a practice address in California, 45 per 100,000 residents, the 17th highest rate of 51. Los Angeles and San Francisco have the most; each record links to the provider's NPI and the California license search. Page 284 of 354.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207R00000X · method

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

Los Angeles has the most, 1,423

  1. Los Angeles1,423
  2. San Francisco1,318
  3. San Diego961
  4. Sacramento601
  5. Oakland432

Internal Medicine Physician records in California

  1. Ann Shahwan, MDWest Hills, CA 913071417040809
  2. Ahmad Shahzad, M.D.Sacramento, CA 958161982983557
  3. Ayesha ShahzadFresno, CA 937201104520659
  4. Mohmad ShaikhRedlands, CA 923731962031955
  5. Safia Shaikh, MDLos Angeles, CA 900951285290601
  6. Zahid Shaikh, M.D.Walnut Creek, CA 945951740441294
  7. Somalwar Shailaja Reddy, MDPleasanton, CA 945881154476430
  8. Mangala Shaker, M.D.Riverside, CA 925061073509311
  9. Mohammed Shaker, MD, PHDSan Diego, CA 921031356754386
  10. Kianoush Shakib, MDLos Angeles, CA 900271649423377
  11. Mina Shakiba, MDLong Beach, CA 908061427329119
  12. Neema Shakibai, M.D.La Mesa, CA 919421588612774
  13. Shamim Shakibai, M.D.West Hollywood, CA 900481164607677
  14. Khusro ShakirSan Jose, CA 951151720170657
  15. Arjana Shakya, MDRed Bluff, CA 960801265004824
  16. Mohsen Shalaby, M.D.Hemet, CA 925431366642522
  17. Megha Shalavadi, MDStanford, CA 943051083173074
  18. William Shalen, MDRichmond, CA 948011982789640
  19. Reyzan Shali, MDCarlsbad, CA 920111245245018
  20. Bernard Shalit, MDSan Francisco, CA 941431306427794
  21. Haroutyun Shamamian, M.D.Los Angeles, CA 900271659570703
  22. Vinay Shamasundara, MDLos Angeles, CA 900271457795486
  23. Sriram Shamasunder, M.D.Torrance, CA 905091558552786
  24. Pejman Shamekh, M.D.Los Angeles, CA 900671982620134
  25. Fariborz Shams, D.O.Anaheim, CA 928041063421865
  26. Sharmineh Shams, M.D.Visalia, CA 932911447522172
  27. Mandana Shamsa, MDDowney, CA 902411770628638
  28. Arash Shamsinejad Babaki, MDSan Diego, CA 921011750498119
  29. Neal Shanblatt, M.D.Santa Monica, CA 904041922092410
  30. Swati Shandilya, M.D.Redwood City, CA 940631962781195
  31. Charles Shang, MDGrass Valley, CA 959451104805902
  32. Prabhu Shankar, MD, MSEl Macero, CA 956181629928858
  33. Prithvi Shankar, MDModesto, CA 953501790772838
  34. Anuradha Shanmugham, M.D.Cameron Park, CA 956821992827299
  35. Evan Shannon, MDSanta Monica, CA 904041811378177
  36. Morgan Shannon, MDStanford, CA 943051033804638
  37. Roy Shannon, MDOroville, CA 959661104880335
  38. Maogang Shao, M.D.Northridge, CA 913251467548305
  39. Yuan Shao, M.D.San Diego, CA 921031356768956
  40. Jeffrey Shapiro, M.D.Anaheim, CA 928011760588776
  41. Kenneth Shapiro, M.D.Templeton, CA 934651336125178
  42. Lawrence Shapiro, MDMountain View, CA 940401740297894
  43. Marc Shapiro, MDClearlake, CA 954221740217348
  44. Martin Shapiro, MDLos Angeles, CA 900951972523058
  45. Robert Shapiro, M.D.Los Angeles, CA 900451245276823
  46. Robert Shapiro, MDLakeport, CA 954531952332777
  47. Samantha Shapiro, MDStanford, CA 943051730874231
  48. William Shapiro, M.D.Santa Barbara, CA 931051366464802
  49. Calvin Shapses, M.D.San Francisco, CA 941071861840340
  50. Reza Sharafi, M.D.Downey, CA 902411336199660

Source: CMS NPPES, primary taxonomy 207R00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 17 of 51 per resident

  1. New Jersey50
  2. New Hampshire48
  3. Minnesota46
  4. California45
  5. Florida45
  6. Ohio45
  7. 50 states and D.C.44

Source: CMS NPPES, primary taxonomy 207R00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

79.5% of these records appear in a Medicare file, against 78.7% 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. California79.5%
  2. United States78.7%

Internal Medicine Physician records in California, measured

  • In a Medicare file14,068 of 17,696 · 79.5% here, 78.7% nationally
  • In the CMS Doctors and Clinicians file11,077 · 62.6% here, 61.4% nationally
  • Not updated in five years or more10,832 · 61.2% here, 55.4% nationally
  • Median graduation year2004 · the 11,065 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207R00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

17,696 NPPES records list internal medicine physician (207R00000X) as their primary taxonomy with a practice address in California: 45 per 100,000 residents against 44 nationally (50 states and D.C.). Los Angeles has 1,423 of them (8%).

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 York12,067
  2. Florida10,151
  3. Texas9,175
  4. Pennsylvania7,300

States with a similar rate per 100,000

  1. Minnesota45.9
  2. Ohio44.8
  3. New Hampshire48.0
  4. Maine42.8

The largest states

  1. New York12,067
  2. Florida10,151
  3. Texas9,175
  4. Pennsylvania7,300
  5. Illinois7,238

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.