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 74 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. Meghan Dekitani, MDOrange, CA 928681790348779
  2. Robert Dekkers, M.D.Santa Paula, CA 930601821083171
  3. Michael Del JuncoOrange, CA 928681679063127
  4. Schonze Del Pozo, M.D.Roseville, CA 956611063547461
  5. Alexander Del Rosario, M.D.Palm Springs, CA 922621841259231
  6. Mutya Mithi Del RosarioOakland, CA 946021760001911
  7. Jaime Dela Cerna, MDVisalia, CA 932911053483289
  8. Erin Dela Cruz, MD, PHDSan Francisco, CA 941431710461371
  9. June Dela Cruz, M.D.Chula Vista, CA 919131689784886
  10. Lina Dela Cruz, MDWest Covina, CA 917901952489858
  11. Patrixia Keith Dela Cruz, MDSan Francisco, CA 941431790435782
  12. Judith Delafield, PHD., M.D.Beverly Hills, CA 902101366500522
  13. Cody DelaneySan Diego, CA 921031164982070
  14. Charles Delatore, M.D.San Francisco, CA 941321679560478
  15. Amy Delellis, M.D.San Diego, CA 921031811424542
  16. Dana Delellis, MDSanta Monica, CA 904041093006595
  17. Enrique Deleon, PACBakersfield, CA 933011457449308
  18. Epifanio Deleon, M.D.Walnut Creek, CA 945951124194907
  19. Heather Deleon, DVMTurlock, CA 953801205359684
  20. Javier Deleon, M.D.Walnut Creek, CA 945951598833790
  21. Richard Delfs, MDSanta Clara, CA 950511417034372
  22. Ralph Delgado, MDEl Dorado Hills, CA 957621780650598
  23. Patrick Deligero, M.D.Whittier, CA 906051427412451
  24. Julie Delilly, M.DRedondo Beach, CA 902771790890408
  25. Monique Delisser, M.D.Walnut Creek, CA 945971578925087
  26. Pooja Delk, MDInglewood, CA 903011225760242
  27. Shahin Delkhah, M.D.Reseda, CA 913351265477749
  28. Rosemarie Dellica, M.D.Bakersfield, CA 933011598850539
  29. Joseph Dellinger, MDPasadena, CA 911051740691377
  30. Joseph Delly, MDSan Diego, CA 921031992565576
  31. Guy Delorefice, M.D.Sonoma, CA 954761952426421
  32. Luz Delportillo, M.D.Calabasas, CA 913021760554026
  33. Sean Delshad, M.D.Santa Monica, CA 904041265894257
  34. Jeannette Delvalle Velez, M.D.Chula Vista, CA 919111952370074
  35. Jacqueline Delyaei, M.D.Watsoville, CA 950761285659169
  36. Monica Delzeit, M.D.San Jose, CA 951191912005349
  37. Danielle Demarchi, DOSan Diego, CA 921551780326983
  38. Anita Demas, M.D.San Francisco, CA 941151174646012
  39. Alana Dembitsky, MDSan Diego, CA 921231023458460
  40. Nicholas DembitskySan Diego, CA 921011205199924
  41. Romany Demian, M.D.Oxnard, CA 930301043232085
  42. Francis Demichele, M.D.Cerritos, CA 907031205374527
  43. Berj Demirjian, M.D.Los Angeles, CA 900731578711982
  44. Mehmet Demirozu, M.D.Hawthorne, CA 902501295753234
  45. Deborah Demott, M.D.Berkeley, CA 947051124040084
  46. Peter Demuth, MDLoma Linda, CA 923541831622034
  47. Sally Denardo, M.D.Sacramento, CA 958171568447878
  48. Alex Denes, MDCanyon Lake, CA 925871376622712
  49. Bo DengMission Hills, CA 913451184121204
  50. Calvin Deng, MDWalnut Creek, CA 945981326126491

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.