NPPES file of Aug 9, 2026

Doctors and health care providers in Berkeley, CA

4,898 individual NPPES records list a practice address in Berkeley, 36th of 812 California cities. The largest group is marriage & family therapist: 613, 13% of the city's records, against 6% across California. Page 40 of 98.

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

Berkeley in California

  • Rank in California36th of 812 cities by records
  • Share of the state0.5% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups27.4% of all records

Compared with California as a whole, Berkeley has 3.3× the state's share of clinical psychologist records and 0.09× its share of behavior technician records.

Providers in Berkeley, alphabetically

  1. David Irwin, M.D.Hematology & Oncology Physician1780672048
  2. Ernest Isaacs, M.F.T.Marriage & Family Therapist1770517302
  3. Sheb IsbellAddiction (Substance Use Disorder) Counselor1104671833
  4. Catherine Isenstadt, MA MFTMarriage & Family Therapist1962541094
  5. Jonah Isenstein, LCSWClinical Social Worker1134939515
  6. Elizabeth IsonoOccupational Therapy Assistant1740836857
  7. Maki Itoh, MFT INTERNMental Health Counselor1477601813
  8. Joshua Iufer, RDDietary Manager1851068647
  9. Susan Ivey, MDFamily Medicine Physician1003004169
  10. Jessica IzquierdoMidwife1063280329
  11. Judith Izzo, L.C.S.W.Clinical Social Worker1053335075
  12. Maryam Jabbari AmiriStudent in an Organized Health Care Education/Training Program1740762178
  13. Briahna JacksonStudent in an Organized Health Care Education/Training Program1902481781
  14. De'Aunte JacksonCommunity Health Worker1871308239
  15. Genee Jackson, PH.D.Clinical Psychologist1013946730
  16. Helen Jackson, M.D.Emergency Medicine Physician1598815938
  17. Samirah JacksonBehavior Analyst1437023108
  18. Shannon Jackson, MAClinical Social Worker1467621805
  19. Summer Jackson, LCSWClinical Social Worker1588301022
  20. Nancy Jackson CarlsonMental Health Counselor1548334634
  21. Lynanne Jacob, R.N.College Health Registered Nurse1821367160
  22. Mack Jacob, DDSDentist1194845784
  23. James Jacobs, PH.D.Psychologist1568528255
  24. Carl Jacobsen, O.D.Optometrist1003941766
  25. Donna Jacobsen, D. O.Family Medicine Physician1801997051
  26. Aaron Jacobson, M.A.Mental Health Counselor1962665844
  27. Karmit JacobsonCounselor1609411537
  28. Megan JacobyStudent in an Organized Health Care Education/Training Program1992054605
  29. Nicolas Jadot, LMFTMarriage & Family Therapist1710819057
  30. Tanya JaikaranHealth Educator1700354248
  31. Mansi JaitlyOptometrist1629758107
  32. Nadia JamMarriage & Family Therapist1639092679
  33. Douglas Jameson, PSY.DClinical Psychologist1023031515
  34. Bina Jangda, LACAcupuncturist1881843845
  35. Rebecca Janik, M.D.Ophthalmology Physician1518223080
  36. Stephen Janik, LCSWClinical Social Worker1639205453
  37. Katherine JankCounselor1881061935
  38. Gem JankowskiAcupuncturist1235067505
  39. Meredith Janson, MFTMarriage & Family Therapist1396495644
  40. Robert Janssen, M.D.Neurology Physician1508170259
  41. Kalub Jarosh, L.ACAcupuncturist1306139126
  42. Benjamin Jarrahi, M.D.Pediatrics Physician1487734596
  43. Richard JarrattAddiction (Substance Use Disorder) Counselor1679801989
  44. Esther Jarvis, NPNurse Practitioner1093168270
  45. Shahin Javaheri, MDPlastic Surgery Physician1962487421
  46. Yasmin Javed, ODOptometrist1750078481
  47. Alanna JavierCounselor1518593383
  48. Sarah JayPhysical Therapist1770964041
  49. Claire Jeannette, MFT LICENSEMarriage & Family Therapist1033378740
  50. Daniel JedynakMarriage & Family Therapist1578294880

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

Berkeley, California appears in the CMS National Plan and Provider Enumeration System with 4,898 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 Berkeley - 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 Berkeley 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 Berkeley is weighted toward Marriage & Family Therapist (613 clinicians, followed by Student in an Organized Health Care Education/Training Program with 443 and Clinical Social Worker with 287). 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, Berkeley reports roughly 12.6 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, Behavior Analyst is the most prominent one with no provider currently listing a Berkeley practice address, a coverage gap Berkeley patients typically fill by traveling to a larger nearby hub.

For Berkeley 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 Berkeley, CA?

There are 4,898 registered healthcare providers in Berkeley, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Berkeley?

The most common specialties in Berkeley are Marriage & Family Therapist, Student in an Organized Health Care Education/Training Program, Clinical Social Worker, Addiction (Substance Use Disorder) Counselor, Clinical Psychologist. Marriage & Family Therapist has the most providers with 613.

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.