NPPES file of Aug 9, 2026

Doctors and health care providers in Oakland, CA

18,558 individual NPPES records list a practice address in Oakland, 7th of 812 California cities. The largest group is marriage & family therapist: 1,576, 8% of the city's records, against 6% across California. Page 125 of 372.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

The 8 largest groups in Oakland

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

Oakland in California

  • Rank in California7th of 812 cities by records
  • Share of the state1.9% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups22.2% of all records
  • Marriage & Family Therapist rank5th of the 10 California cities with the most

Compared with California as a whole, Oakland has 2.9× the state's share of counselor records and 0.29× its share of behavior technician records.

Providers in Oakland, alphabetically

  1. Howard Gruber, MDPediatrics Physician1477661015
  2. Meagen Grundberg, COMMUNITY WORKERCommunity Health Worker1780964064
  3. Danika GrundemannMental Health Counselor1740737592
  4. Matthew GrundyMarriage & Family Therapist1770352411
  5. Alan Grusky, MDSports Medicine (Family Medicine) Physician1386394872
  6. Katherine GruzdivClinical Social Worker1215888607
  7. Fang Gu, M.A.Case Manager/Care Coordinator1972828614
  8. Yi Yi Gu, M.D.Rheumatology Physician1932183472
  9. Anabel GuajardoRehabilitation Practitioner1023718228
  10. Chaofan Guan, PHARMDPharmacist1821866286
  11. Emily Guan, MAStudent in an Organized Health Care Education/Training Program1871004150
  12. Rhondda Guan, RDRegistered Dietitian1972174613
  13. Shirley GuanBehavior Analyst1922502509
  14. Shu Ping GuanMental Health Counselor1770367112
  15. Chrystian Guardado-Lopez, MTMassage Therapist1457233793
  16. Mary Grace GuardianoRegistered Nurse1235969452
  17. Deidre GubacStudent in an Organized Health Care Education/Training Program1952004624
  18. Marsha Gubser, LCSWClinical Social Worker1013389915
  19. Amanda GudinoDay Training/Habilitation Specialist1295653145
  20. Ana GueltigDay Training/Habilitation Specialist1215696299
  21. Alexandra Guenther, PSY.D.Rehabilitation Practitioner1578897427
  22. Elaina Guerin, D.O.Internal Medicine Physician1720286446
  23. Elizabeth Guerra, LCSWClinical Social Worker1386390284
  24. Juan Guerra, MDObstetrics & Gynecology Physician1679651475
  25. Shannon GuerraSpeech-Language Pathologist1194678235
  26. Christine Guerrero, LCSWClinical Social Worker1760816664
  27. Corinne GuerreroAddiction (Substance Use Disorder) Psychologist1881293199
  28. Ella Marie Guerrero, HISHearing Instrument Specialist1205402120
  29. Irazema GuerreroClinical Social Worker1265152896
  30. Jessica GuerreroCommunity Health Worker1851664486
  31. Marypaz GuerreroDay Training/Habilitation Specialist1336848993
  32. Paola GuerreroBehavior Analyst1679059778
  33. Carlos Guerrero Rosas, LCSWClinical Social Worker1114064730
  34. Rodrigo Guerrero TroncosoSpeech-Language Pathologist1437006764
  35. Danielle Guerry, LMFTMental Health Counselor1144420308
  36. Erin GuessCase Manager/Care Coordinator1700486057
  37. Dennis Guest, D.D.S.General Practice Dentistry1801917935
  38. Ryan Guetersloh, LMFTMarriage & Family Therapist1700326584
  39. Margaret Guevara, MED.Behavior Technician1346817871
  40. Amsale Gugessa, NURSE PRACTITIONERFamily Nurse Practitioner1396266987
  41. Natalie Guggenheimer, APCCProfessional Counselor1134836513
  42. Maria GuggisbergMarriage & Family Therapist1760008536
  43. Emily Guh, MDFamily Medicine Physician1124439955
  44. Christine Guidici, O.T.R.Case Manager/Care Coordinator1346386018
  45. Vanessa Guido, MSMarriage & Family Therapist1245570274
  46. Benito GuijarroCounselor1366004129
  47. Allison GuilfoilCounselor1992049266
  48. Darren Guillaume, PA-C, CSSurgical Physician Assistant1114088671
  49. Eduardo Guillen, MDInternal Medicine Physician1891315933
  50. Sharon GuillenBehavior Analyst1477049195

The largest California cities

  1. Los Angeles69,537
  2. San Diego52,937
  3. San Francisco38,143
  4. Sacramento33,083
  5. San Jose20,925

All of California →

How to read this directory

Oakland, California appears in the CMS National Plan and Provider Enumeration System with 18,558 registered healthcare providers spanning 25 or more distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in Oakland - physicians, dentists, nurse practitioners, physician assistants, chiropractors, physical therapists, optometrists, psychologists, podiatrists, and every other credentialed provider type CMS tracks. It does not measure hospital beds, urgent-care capacity, or whether a given clinic is accepting new patients; it measures the pool of professionals with current NPI enrollment and a Oakland practice location on file. Every figure is drawn from the federal National Provider Identifier Registry (CMS NPPES) - more than 7 million providers, maintained since May 2007, with 2024 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.

The provider mix in Oakland is weighted toward Marriage & Family Therapist (1,576 clinicians, followed by Student in an Organized Health Care Education/Training Program with 1,419 and Clinical Social Worker with 1,130). That distribution reflects how NPPES records specialty: providers self-select a primary taxonomy code, so a family physician who also practices geriatrics will show up under whichever NUCC code they registered first. Relative to California's population, Oakland reports roughly 47.6 providers per 100,000 residents using the state-level denominator, which is a rough proxy rather than a precise access-to-care measurement; the true catchment area of any {cityName} clinician extends beyond the municipal boundary.

Of California's most common specialties, General Practice Dentistry is the most prominent one with no provider currently listing a Oakland practice address, a coverage gap Oakland patients typically fill by traveling to a larger nearby hub.

For Oakland patients, this directory is most useful as a starting shortlist. Important: PlainDoctor is a directory of publicly available CMS government data, not a review site, a ranking, or medical advice. NPPES data is self-reported and refreshed monthly; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients.

For informational purposes only; this directory is not medical advice and not a substitute for checking a license. See also: how to find a doctor and how to verify one.

Common questions

How many doctors are in Oakland, CA?

There are 18,558 registered healthcare providers in Oakland, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Oakland?

The most common specialties in Oakland are Marriage & Family Therapist, Student in an Organized Health Care Education/Training Program, Clinical Social Worker, Mental Health Counselor, Behavior Technician. Marriage & Family Therapist has the most providers with 1,576.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov). Records are self-reported registrations, not licenses.

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.