NPPES file of Aug 9, 2026

Hematology & Oncology Physician in California

1,583 NPPES records list hematology & oncology physician with a practice address in California, 4.1 per 100,000 residents, the 19th highest rate of 51. Los Angeles and San Diego have the most; each record links to the provider's NPI and the California license search. Page 26 of 32.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RH0003X · 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, 153

  1. Los Angeles153
  2. San Diego88
  3. Sacramento77
  4. San Francisco64
  5. Orange63

Hematology & Oncology Physician records in California

  1. Vaishali Saste, M.D.Riverside, CA 925061902950033
  2. Tanvir Sattar, MDWalnut Creek, CA 945961821176314
  3. Alan Saven, M.D.La Jolla, CA 920371184680399
  4. Levanto Schachter, D.O.San Luis Obispo, CA 934011093031668
  5. Carlton ScharmanFremont, CA 945381346662806
  6. Kevin Scher, MD MBABeverly Hills, CA 902111457591075
  7. Gary Schiller, MDLos Angeles, CA 900951851311930
  8. Edmond Schmulbach, MDSouth San Francisco, CA 940801013095611
  9. Shiruyeh Schokrpur, MD, PHDSacramento, CA 958171679006043
  10. Joanne Schottinger, MDLos Angeles, CA 900271437226339
  11. Brian SchulteSan Francisco, CA 941431639563679
  12. Thomas Schulz, MDRancho Mirage, CA 922701558323816
  13. Richard Schwab, M.D.La Jolla, CA 920931710900345
  14. Corey Schwartz, MDVallejo, CA 945891801974647
  15. Gary Schwartz, MDWoodland Hills, CA 913671558438481
  16. Lee Schwartz, M.D.Martinez, CA 945531356457857
  17. Richard Schwartz, M.D.Burlingame, CA 940101255679205
  18. John Schwerkoske, MDEncinitas, CA 920241912260829
  19. Margaret (meg) Seaver, MDAntioch, CA 945311386753127
  20. Mina Sedrak, MD, MSEncino, CA 914361770801862
  21. Tara SeeryIrvine, CA 926181043415961
  22. Kishore Sehgal, M.D.Hemet, CA 925431689671034
  23. Tro Sekayan, MDSan Diego, CA 921031669030300
  24. Novejot Sekhon, M.D.Santa Barbara, CA 931051881838464
  25. Simranjit Sekhon, M.D.Los Gatos, CA 950321558632505
  26. Quinne SemberLa Jolla, CA 920371043716871
  27. George Semeniuk, M.D.Newport Beach, CA 926601316022924
  28. Thomas Semrad, M.D., M.A.S.Truckee, CA 961611467438358
  29. Lasika Seneviratne, M.D.Los Angeles, CA 900171437268174
  30. Tiffany SetoFresno, CA 937201649702036
  31. Farah Shah, MDLong Beach, CA 908061114555794
  32. Manan Shah, MDTorrance, CA 905051720549561
  33. Mukund Shah, M.D.Palmdale, CA 935511801977632
  34. Neil Shah, MDLos Angeles, CA 900951881614873
  35. Gurvinder Shaheed, M.D.Rocklin, CA 957651548213705
  36. Ravi Shankar, M.D.Fountain Valley, CA 927081235387259
  37. Richard Shapiro, M.D.Arcadia, CA 910071316037666
  38. Gauri Sharma, D.O.Walnut Creek, CA 945981528234002
  39. Sanjai Sharma, MDLos Angeles, CA 900731659458867
  40. Rebecca Shatsky, M.D.La Jolla, CA 920931760778526
  41. Melani Shaum, M.D.Lompoc, CA 934361144333477
  42. Tiffany Shaw, MDPasadena, CA 911051407199722
  43. Omid Shaye, M.D.West Hills, CA 913071861611931
  44. Kota Shekar, MDRancho Mirage, CA 922701013988583
  45. James Shen, M.D.Arcadia, CA 910071063792265
  46. John Shen, M.D.Los Angeles, CA 900451104183631
  47. Roya Sheridan, M.D.Mather, CA 956551518284918
  48. Gene Sherman, MDEl Segundo, CA 902451073576310
  49. Michael Sherman, M.D., PHDWalnut Creek, CA 945981164643359
  50. Milan Sheth, MDLong Beach, CA 908061235217266

Source: CMS NPPES, primary taxonomy 207RH0003X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 19 of 51 per resident

  1. Ohio4.4
  2. New Jersey4.3
  3. Louisiana4.1
  4. California4.1
  5. Nebraska4.0
  6. Virginia4.0
  7. 50 states and D.C.4.2

Source: CMS NPPES, primary taxonomy 207RH0003X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

83.1% of these records appear in a Medicare file, against 82.9% 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. California83.1%
  2. United States82.9%

Hematology & Oncology Physician records in California, measured

  • In a Medicare file1,315 of 1,583 · 83.1% here, 82.9% nationally
  • In the CMS Doctors and Clinicians file1,126 · 71.1% here, 71.3% nationally
  • Not updated in five years or more917 · 57.9% here, 54.3% nationally
  • Median graduation year2003 · the 1,124 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RH0003X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

1,583 NPPES records list hematology & oncology physician (207RH0003X) as their primary taxonomy with a practice address in California: 4.1 per 100,000 residents against 4.2 nationally (50 states and D.C.). Los Angeles has 153 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. New York1,163
  2. Texas922
  3. Florida818
  4. Pennsylvania784

States with a similar rate per 100,000

  1. Nebraska4.0
  2. Louisiana4.1
  3. Virginia4.0
  4. North Carolina4.0

The largest states

  1. New York1,163
  2. Texas922
  3. Florida818
  4. Pennsylvania784
  5. Illinois666

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.