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 30 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. Geetha Varma, M.DSalinas, CA 939011740287978
  2. Sheila Vasan, M.D.Van Nuys, CA 914051487846416
  3. Rodina Vatanparast, M.D.Torrance, CA 905051770887788
  4. Arash Velayati, M.D.Sacramento, CA 958171689093692
  5. Maria Velez Velez, M.D.Los Angeles, CA 900951295261873
  6. Swarajya Vemuri, MDAnaheim, CA 928071174671127
  7. Kalpathy Venkatesan, MDPorterville, CA 932571245289420
  8. Neha Venkatesh, MDSan Francisco, CA 941431396487732
  9. Aparajit Venkateswaran, MDChula Vista, CA 919141386171791
  10. Jeffrey Venstrom, MDSan Francisco, CA 941431417100637
  11. Rashmi Verma, M.D.Sacramento, CA 958171790919512
  12. Robert Vescio, M.D.Los Angeles, CA 900481962509216
  13. Daniel Vicario, M.D.San Diego, CA 921031912933326
  14. Irena Vidito, D.O.Ventura, CA 930031689735227
  15. Brian Vikstrom, M.D.Vacaville, CA 956871285730820
  16. Deborah Villa, MDAtascadero, CA 934221194726042
  17. Miguel Villalona Calero, M.D.Orange, CA 928681780692939
  18. Navneet Virk, MDCarmichael, CA 956081275703076
  19. Paul Volberding, MDSan Francisco, CA 941211356457881
  20. Annette Von Drygalski, MDSan Diego, CA 921031376607036
  21. Nilesh Vora, M.D.Long Beach, CA 908061790976363
  22. Elham Vosoughi, M.D.San Mateo, CA 944021134658669
  23. Khai Vu, M.D.Fountain Valley, CA 927081770548596
  24. Peter Vu, M.D.San Diego, CA 921031861810830
  25. William Wachsman, M.D.La Jolla, CA 920931104876952
  26. Jerry Wada, M.D.Glendale, CA 912061487764379
  27. Edward Wagner, M.D.Laguna Hills, CA 926531487799474
  28. Gail Wagner, M.D.San Leandro, CA 945771780756593
  29. Zev Wainberg, MDSanta Monica, CA 904041104850932
  30. Donna Walker, M.D.Lompoc, CA 934361528086964
  31. Sabina Wallach, M.D.La Jolla, CA 920371871529081
  32. Amy Wang, MDGlendale, CA 912041720155609
  33. Hengbing Wang, M.D.Ukiah, CA 954821497940191
  34. Henry Wang, MDArcadia, CA 910071245255587
  35. Janet WangSanta Cruz, CA 950651760629158
  36. Lili Wang, M.D.Martinez, CA 945531942486246
  37. Lisa Wang, M.D.Whittier, CA 906021356549331
  38. Stephen Wang, MDSacramento, CA 958231508944265
  39. Sunny Wang, M.D.San Francisco, CA 941151730266362
  40. Tina Wang, M.D.Pasadena, CA 911051700170743
  41. Titfany Wang, MDInglewood, CA 903011063972131
  42. Victoria Wang, M.D., PHDSan Francisco, CA 941431629264098
  43. Yubao Wang, M.D.Walnut Creek, CA 945981306942644
  44. Brian Warnecke, D.O.Orange, CA 928681356804421
  45. Tracie Watson, D.O.Walnut Creek, CA 945981275875965
  46. Robert Weber, MDDaly City, CA 940151265505291
  47. Yunfei Wei, MDDowney, CA 902411801075684
  48. Laurie Weisberg, MDSouth San Francisco, CA 940801982782512
  49. Larry Weisenthal, MD., PHD.Huntington Beach, CA 926471568497519
  50. Jeffrey Weisz, MDLos Angeles, CA 900271972651966

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.