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 10 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. Adam Giermasz, M.D., PHDSacramento, CA 958171831374644
  2. Amandeep Gill, M.DFrench Camp, CA 952311285838359
  3. Amandeep Gill, M.D.Marysville, CA 959011871768069
  4. Amitoj Gill, MDVisalia, CA 932771699022525
  5. Ammara Gill, MDWalnut Creek, CA 945981447482096
  6. Indrani Gill, M.D.Riverside, CA 925011174654818
  7. Gregory Gilmore, D.O.Corona, CA 928821205271640
  8. Anthony Giorgio, MDDowney, CA 902411801902721
  9. John Glaspy, MDLos Angeles, CA 900951639104250
  10. Dana Glenn, M.D.San Diego, CA 921231497765440
  11. Michael Glowalla, MDLos Angeles, CA 900271588735559
  12. William Go, M.D., PH.D.San Diego, CA 921031548422934
  13. Scott Godfrey, DOSan Diego, CA 921201659464089
  14. James Golden, M.D.San Gabriel, CA 917761144240235
  15. Benjamin Goldenson, MDNewport Beach, CA 926631588053458
  16. Jonathan Goldman, M.D.Santa Monica, CA 904041750593844
  17. Mark Goldstein, MDVan Nuys, CA 914051487758033
  18. Gol Golshani, M.DLaguna Hills, CA 926531629497797
  19. Arina Golubeva-Ganeles, M.D.Monterey, CA 939401790739191
  20. I-Yeh Gong, M.D.Sacramento, CA 958171851493373
  21. Jun GongWest Hollywood, CA 900481538426101
  22. Haydee Gonzalez Hidalgo, MDDowney, CA 902411912071481
  23. Rafael Gonzalez-Amado, MDSouth San Francisco, CA 940801639194848
  24. Grant Goodman, MDHayward, CA 945451154495760
  25. Srila Gopal, M.D.La Jolla, CA 920931831323369
  26. Krishna Goparaju, MDRoseville, CA 956611124415179
  27. Balaganesh Gopurala, MDDowney, CA 902411316967854
  28. Peter Gordon, MDOakland, CA 946111568540342
  29. Richard Gould, MDWest Hollywood, CA 900481194743385
  30. Uma Gowda, MDRoseville, CA 956611013976570
  31. Arjan Gower, MD, MSSanta Monica, CA 904041083106637
  32. Ellsworth Grant, M.DLos Angeles, CA 900171043233760
  33. Leland Green, M.D.Beverly Hills, CA 902111730185877
  34. Henry Greene, M.D.Eureka, CA 955011659312627
  35. Justin Grenet, MDSanta Rosa, CA 954031770102915
  36. Tim Grennan, MDSacramento, CA 958251972681617
  37. Ravleen Grewal, MDStockton, CA 952041679078885
  38. Monica Grova, MDBurlingame, CA 940101265866487
  39. Punita Grover, MBBSStanford, CA 943051184001729
  40. Chad Guenther, MDSanta Barbara, CA 931051063874758
  41. Helmy Guirgis, M.D.Dana Point, CA 926291306952536
  42. Srinivas Gummaraju, M.D.Sacramento, CA 958171154306991
  43. Ruwan Gunaratne, MDStanford, CA 943051538664461
  44. John GunnellGlendale, CA 912031487765301
  45. Naveen Gupta, M.D.Upland, CA 917861720024128
  46. Sachin Gupta, M.D.Fresno, CA 937201144343005
  47. Shelly Gupta, MDDublin, CA 945681831558329
  48. Tanya Gupta, MDSunnyvale, CA 940861154741031
  49. Rodolfo Gutierrez, MDWestlake Village, CA 913611184920944
  50. Richard Guy, M.D.Sacramento, CA 958171578545190

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.