NPPES file of Aug 9, 2026

Neonatal-Perinatal Medicine Physician in California

871 NPPES records list neonatal-perinatal medicine physician with a practice address in California, 2.2 per 100,000 residents, the 23rd highest rate of 50. Los Angeles and Palo Alto have the most; each record links to the provider's NPI and the California license search. Page 15 of 18.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 2080N0001X · 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, 89

  1. Los Angeles89
  2. Palo Alto89
  3. San Diego82
  4. Orange63
  5. San Francisco47

Neonatal-Perinatal Medicine Physician records in California

  1. Aaron Simko, MDStockton, CA 952031548209240
  2. Charles Simmons, M.D.West Hollywood, CA 900481891724159
  3. Elba Simon-Fayard, M.D.Loma Linda, CA 923541265452072
  4. Maureen Sims, M.D.Sylmar, CA 913421174666085
  5. Bruce Sindel, MDWest Covina, CA 917901679525984
  6. Bindya Singh, MD, FAAPSan Jose, CA 951161912951880
  7. Harjinder Singh, M.DPomona, CA 917671407919004
  8. Himanshu Singh, MDModesto, CA 953551447663778
  9. Kultar Singh, M.D.Madera, CA 936361386773646
  10. Navneet Singh, MDMadera, CA 936361205353489
  11. Yoginder Singh, MDLoma Linda, CA 923541770177388
  12. Dev Singhvi, MBBSLoma Linda, CA 923541932725645
  13. Lizette Sistoza, MDColton, CA 923241235235672
  14. Dharshi Sivakumar, MDPalo Alto, CA 943041710939343
  15. Terri Slagle, M.D.San Francisco, CA 941181023182060
  16. Ashlee Smith, D.O.Redding, CA 960011356585020
  17. Bruce Smith, MDHarbor City, CA 907101306913132
  18. Jeffrey Smith, M.D.Los Angeles, CA 900951457453524
  19. Kristen Smith, M.D.San Diego, CA 921341639490121
  20. Lynne Smith, M.D.Torrance, CA 905021457406134
  21. Susan Sobczak-Hoeft, D.O.Fountain Valley, CA 927081275645772
  22. Augusto Sola, MDOrange, CA 928681063440717
  23. Antoine Soliman, M.D.Orange, CA 928681003868746
  24. Christina Sollinger, MDSacramento, CA 958171477826162
  25. Tabitha Solomon, MDPalo Alto, CA 943041750537908
  26. Rashmi Priya Somu, MBBS, MDVictorville, CA 923951114417425
  27. Dongli Song, MDSan Jose, CA 951281083785778
  28. Richard Song, M.DSan Diego, CA 921031881893477
  29. Cecilia Soriano-Casaclang, MDMontclair, CA 917631932206067
  30. Gustavo Sosa, MDSacramento, CA 958161932191533
  31. Susan Soto, MDModesto, CA 953501942475280
  32. Howard Speil, MDBaldwin Park, CA 917061952478810
  33. Mark Speziale, M.D.San Diego, CA 921231801978143
  34. Sukshma Sreepathi, M.D.Los Angeles, CA 900951073614301
  35. Theodora Stavroudis, M.D.Los Angeles, CA 900271457407926
  36. Robin Steinhorn, MDSacramento, CA 958171346293842
  37. Lisa Stellwagen, M.D.San Diego, CA 921031124055348
  38. Hannah Sterling, MDOrange, CA 928681093211724
  39. Debra Stern, MDTarzana, CA 913561255325312
  40. David Stevenson, MDPalo Alto, CA 943041558403790
  41. Emily Stieren, M.D., PH.D.Sacramento, CA 958171841557980
  42. Marie Strait, M.D.San Diego, CA 921231669633012
  43. Arthur Strauss, M.D.Long Beach, CA 908061093739948
  44. Katie StrobelLos Angeles, CA 900951467814988
  45. Christine StudenmundSan Francisco, CA 941431912649294
  46. Erin Studer, MDSan Diego, CA 921231992950190
  47. Sarah Styles, DOWalnut Creek, CA 945981659791499
  48. Hsiang-Fen Su, MDTarzana, CA 913561154384873
  49. Nirupama SubramanianSacramento, CA 958171164403507
  50. Yao Sun, MDSan Francisco, CA 941431336226273

Source: CMS NPPES, primary taxonomy 2080N0001X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 23 of 50 per resident

  1. Kentucky2.4
  2. Oklahoma2.3
  3. Texas2.3
  4. California2.2
  5. Hawaii2.2
  6. Montana2.2
  7. 50 states and D.C.2.3

Source: CMS NPPES, primary taxonomy 2080N0001X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

14.6% of these records appear in a Medicare file, against 15.6% 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. California14.6%
  2. United States15.6%

Neonatal-Perinatal Medicine Physician records in California, measured

  • In a Medicare file127 of 871 · 14.6% here, 15.6% nationally
  • In the CMS Doctors and Clinicians file61 · 7.0% here, 7.0% nationally
  • Not updated in five years or more470 · 54.0% here, 55.5% nationally
  • Median graduation year2012 · the 61 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 2080N0001X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

871 NPPES records list neonatal-perinatal medicine physician (2080N0001X) as their primary taxonomy with a practice address in California: 2.2 per 100,000 residents against 2.3 nationally (50 states and D.C.). Los Angeles has 89 of them (10%).

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. Texas697
  2. New York513
  3. Florida457
  4. Pennsylvania393

States with a similar rate per 100,000

  1. Hawaii2.2
  2. Montana2.2
  3. Virginia2.2
  4. Oklahoma2.3

The largest states

  1. Texas697
  2. New York513
  3. Florida457
  4. Pennsylvania393
  5. Illinois362

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.