NPPES file of Aug 9, 2026

Specialist in California

5,749 NPPES records list specialist with a practice address in California, 15 per 100,000 residents, the 19th highest rate of 51. San Francisco and Los Angeles have the most; each record links to the provider's NPI and the California license search. Page 25 of 115.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 174400000X · method

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

San Francisco has the most, 666

  1. San Francisco666
  2. Los Angeles301
  3. Sacramento241
  4. San Diego207
  5. Oakland198

Specialist records in California

  1. Italia DiazSacramento, CA 958161366131294
  2. Ray Diaz, CERTIFIED ORTHOTISTPleasanton, CA 945881245655588
  3. Lorenzo Dicarlo, MDSan Francisco, CA 941331396186391
  4. Arthur Dick, M.D.Hemet, CA 925431144366840
  5. Michael Dickel, PH.D.Long Beach, CA 908221205931524
  6. Denise DickensOakland, CA 946051699543611
  7. Kenneth Diddie, M.D.Westlake Village, CA 913611184684219
  8. Robert Didier, D.D.S.Santa Rosa, CA 954031780805671
  9. William Dietrick, MDPasadena, CA 911051881712248
  10. Jack DiggsSan Francisco, CA 941021427290865
  11. Prasad Dighe, MDStockton, CA 952041356377071
  12. Nancy Dilger, MA, PT, PCS, CKTPLos Angeles, CA 900241881800324
  13. Vincent Dimaggio, M.D.Walnut Creek, CA 945981215959366
  14. Maria Renelda DimatulacSan Francisco, CA 941031467100032
  15. David Ding, M.D.Paradise, CA 959691982652244
  16. Sonia DingwallMission Viejo, CA 926921164813465
  17. Son Dinh, M.D.Bakersfield, CA 933091215924741
  18. Diane Diniz, RDHPebble Beach, CA 939531427636521
  19. Donald Dinwoodie, M.D.Santa Ana, CA 927051114910825
  20. Macy Dion-StaebellSan Francisco, CA 941031043867187
  21. Angela Dipietro, R.A.S.Van Nuys, CA 914111013319938
  22. Charles Diraimondo, M.D.Concord, CA 945201962437269
  23. Albert Divittorio, M. D.Placerville, CA 956671326021825
  24. Rakesh Dixit, M.D.San Francisco, CA 941091295843001
  25. Matthew Dixon, MDOakland, CA 946111194770438
  26. Thanh Ha Doan, CMTGarden Grove, CA 928431942639331
  27. Waleed Doany, M.D.Tarzana, CA 913561447360573
  28. John Dolan, M.D.Emeryville, CA 946081316921257
  29. Chanda DomantaySan Francisco, CA 941031922498518
  30. Janet Dombro, IBCLCSan Jose, CA 951281659587228
  31. Angela DombrowskiSan Francisco, CA 941021366862963
  32. Cynthia DomingoAlta, CA 957011225162530
  33. Evangeline DomingoSanta Clarita, CA 913501780174102
  34. Caleb Dominguez, B.S., CET, CPTChula Vista, CA 919151346514965
  35. Marylin DominiciDublin, CA 945681427785807
  36. Lawrence Dong, M.D.Santa Clara, CA 950511518096924
  37. Irene Donley Kimble, MDSan Bernardino, CA 924041417047960
  38. Erin Donovan-Cohen, D.P.TRancho Santa Margarita, CA 926881710390430
  39. Jeannette Doolittle, MMTJackson, CA 956421407977358
  40. Lyle Dornon, LCADCSusanville, CA 961301124162797
  41. Iris Dosado, PTALos Angeles, CA 900391023426251
  42. R Philip Doss, M.D., FACSLos Angeles, CA 900331285782847
  43. Anthony DostColusa, CA 959321902948953
  44. Eve Doty, CPOLos Angeles, CA 900331023271574
  45. Spencer Doty, CPOGlendale, CA 912061578726022
  46. Tephanie Doubi, MT,CLT,LLCCPanorama City, CA 914021740574102
  47. Foongyee DouglasOakland, CA 946121073830576
  48. Kylene DouglasOakland, CA 946051851419147
  49. Jennifer Doupnik, RDH, OMTSan Juan Bautista, CA 950451619805926
  50. Elnora DowerLos Angeles, CA 900441114445442

Source: CMS NPPES, primary taxonomy 174400000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 19 of 51 per resident

  1. Massachusetts16
  2. West Virginia15
  3. Maryland15
  4. California15
  5. Minnesota15
  6. Delaware13
  7. 50 states and D.C.18

Source: CMS NPPES, primary taxonomy 174400000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

29.6% of these records appear in a Medicare file, against 17.0% 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. California29.6%
  2. United States17.0%

Specialist records in California, measured

  • In a Medicare file1,704 of 5,749 · 29.6% here, 17.0% nationally
  • In the CMS Doctors and Clinicians file1,076 · 18.7% here, 11.1% nationally
  • Not updated in five years or more4,403 · 76.6% here, 77.3% nationally
  • Median graduation year1989 · the 1,075 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 174400000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

5,749 NPPES records list specialist (174400000X) as their primary taxonomy with a practice address in California: 15 per 100,000 residents against 18 nationally (50 states and D.C.). San Francisco has 666 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. Florida2,685
  2. Washington2,609
  3. Pennsylvania2,031
  4. Texas1,716

States with a similar rate per 100,000

  1. Minnesota14.6
  2. Maryland15.2
  3. West Virginia15.4
  4. Massachusetts15.7

The largest states

  1. New York22,636
  2. Florida2,685
  3. Washington2,609
  4. Pennsylvania2,031
  5. Texas1,716

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.