NPPES file of Aug 9, 2026

Periodontics in California

929 NPPES records list periodontics with a practice address in California, 2.4 per 100,000 residents, the 11th 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 16 of 19.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 1223P0300X · 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, 73

  1. Los Angeles73
  2. San Francisco65
  3. San Diego40
  4. Sacramento25
  5. Beverly Hills24

Periodontics records in California

  1. Stephen Shepherd, D.D.S.Tustin, CA 927801487630992
  2. Fumio Shibata, DDSLarkspur, CA 949391730219106
  3. Hamid Shirazi, DDSDavis, CA 956161518081439
  4. Gary Sigafoos, D.D.S.La Jolla, CA 920371891910857
  5. Cathleen Silliman, D.D.S.San Diego, CA 921011285650366
  6. Maria Silvera Portacio, PHD, DDS, INC.Santa Maria, CA 934541174561534
  7. Rasheed Simjee, DMDCorona, CA 928811790899342
  8. Ira Simon, DDSNovato, CA 949471356415772
  9. Ziv Simon, D.M.D.Beverly Hills, CA 902101245242742
  10. Krikor Simonian, D.D.S.Pasadena, CA 911061942328604
  11. Thomas Sims, DDSTorrance, CA 905051629122718
  12. Elisa Sin, D.M.D.Palmdale, CA 935511659655090
  13. Ajitesh Singh, DDSSan Diego, CA 921311295310456
  14. Hardev Singh, D.M.D.Cerritos, CA 907031356404073
  15. Shalini Singh, D.D.S.Lancaster, CA 935341518981646
  16. James Sinks, DDSSan Diego, CA 921171841376407
  17. G. Thomas Sirinian, DDSEncinitas, CA 920241013150648
  18. Jay Sison, D.D.S., D.M.SCLos Angeles, CA 900241164510103
  19. Eldridge Smith, PERIODONTIST DDSSan Diego, CA 921171811905854
  20. Philip Smith, DDS, DMDSanta Barbara, CA 931111093650830
  21. Ravipan Smith, D.D.S., M.S.Seal Beach, CA 907401457365694
  22. Stephen Smith, D.D.S.Aptos, CA 950031518982040
  23. John Snowden, D.D.S.Arcadia, CA 910071053742130
  24. Alvin Snyder, D.D.S.San Mateo, CA 944011134153281
  25. Robert Sobel, DDSEncino, CA 914361184970675
  26. Bobby Soleiman, DDSMurrieta, CA 925621497863534
  27. Peiman Soleymani, D.D.S.Beverly Hills, CA 902101063856672
  28. Matthew Somerville, DDS, MSWestlake Village, CA 913611821341819
  29. Celia SommerVentura, CA 930031003339391
  30. Keith Sonnier, DDSSan Diego, CA 921341073586301
  31. Iyad Sood, D.M.D.Huntington Beach, CA 926481447370184
  32. John Sottosanti, DDSLa Jolla, CA 920371063657336
  33. Paul Speert, DDSSan Francisco, CA 941271447392832
  34. Michael Spilotro, DDSSan Diego, CA 921171740402320
  35. Coury Staadecker, D.D.S., M.S.Irvine, CA 926121932258332
  36. Caton State, DDS, MSPlacerville, CA 956671609035344
  37. Paul Steigerwald, D.D.S.Santa Rosa, CA 954041013047497
  38. Travis Steinberg, DDSSan Diego, CA 921071376083113
  39. Gregory Steiner, DDSSanta Rosa, CA 954051306048608
  40. Robert Stepnick, DDS MSMerced, CA 953481770607020
  41. Steven Sumida, D.D.S.Visalia, CA 932911861408080
  42. Kuo Tong Sun, DMDSan Francisco, CA 941101942318167
  43. Tina Sun, DDSCity Of Industry, CA 917481144423278
  44. Ki-Sung Sung, D.D.S., M.S.Valencia, CA 913551962541540
  45. Mark Sutter, DDSFairfield, CA 945341871898130
  46. Logesh SwayamprakasamSan Jose, CA 951211215262225
  47. Frank Sy, D.M.D.Rosemead, CA 917701689982555
  48. Jonathan Szymanowski, DMD,MMSCSacramento, CA 958251164467148
  49. Thai Ta, D.D.S.West Covina, CA 917901003953563
  50. Negar Tabandeh, DDS, MSUpland, CA 917861366644916

Source: CMS NPPES, primary taxonomy 1223P0300X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 11 of 51 per resident

  1. Maryland2.7
  2. Virginia2.5
  3. Rhode Island2.5
  4. California2.4
  5. Washington2.4
  6. Colorado2.3
  7. 50 states and D.C.2.0

Source: CMS NPPES, primary taxonomy 1223P0300X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

68.6% of these records appear in a Medicare file, against 67.1% 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. California68.6%
  2. United States67.1%

Periodontics records in California, measured

  • In a Medicare file637 of 929 · 68.6% here, 67.1% nationally
  • In the CMS Doctors and Clinicians file2 · 0.2% here, 0.5% nationally
  • Not updated in five years or more724 · 77.9% here, 74.4% nationally

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 1223P0300X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

929 NPPES records list periodontics (1223P0300X) as their primary taxonomy with a practice address in California: 2.4 per 100,000 residents against 2 nationally (50 states and D.C.). Los Angeles has 73 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 York565
  2. Florida487
  3. Texas486
  4. Massachusetts390

States with a similar rate per 100,000

  1. Washington2.4
  2. Rhode Island2.5
  3. Virginia2.5
  4. Colorado2.3

The largest states

  1. New York565
  2. Florida487
  3. Texas486
  4. Massachusetts390
  5. New Jersey291

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.