NPPES file of Aug 9, 2026

Doctors and health care providers in Walnut Creek, CA

6,170 individual NPPES records list a practice address in Walnut Creek, 23rd of 812 California cities. The largest group is behavior technician: 1,764, 29% of the city's records, against 18% across California. Page 123 of 124.

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

The 8 largest groups in Walnut Creek

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

Walnut Creek in California

  • Rank in California23rd of 812 cities by records
  • Share of the state0.6% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups37.6% of all records

Compared with California as a whole, Walnut Creek has 3.5× the state's share of hospitalist physician records and 0.39× its share of mental health counselor records.

Providers in Walnut Creek, alphabetically

  1. Juanita Yun, MDNuclear Medicine Physician1609954783
  2. Timothy YunBehavior Technician1124734876
  3. Carmen Yung, FNP-BCNurse Practitioner1003475450
  4. Kai Chun YungBehavior Technician1891305421
  5. Norman Yung, DMDDentist1659444537
  6. Victoria YungGastroenterology Physician1750670774
  7. Alexandra YuskivBehavior Technician1770373391
  8. Christopher ZacariasBehavior Technician1851909303
  9. Brandy Zachary, DC, IFMCPNutrition Chiropractor1235678707
  10. Diana ZachlodBehavior Technician1356056972
  11. Jamal Zaka, M. D.Pulmonary Disease Physician1053581769
  12. Anna Zakasovskaya, PA-CPhysician Assistant1649523218
  13. Basma Zaky, DDSDentist1174136162
  14. Renee Zaloumis, L.C.S.W.Clinical Social Worker1952536948
  15. Sam Saeed Zamani, M.D.Gastroenterology Physician1972500148
  16. Dejia ZambranoBehavior Technician1376357269
  17. Valerie ZamoraBehavior Technician1033804372
  18. Guadalupe Zamora ZaragozaBehavior Technician1770219222
  19. Jacopo Zamporri, MS, ATC, OTCAthletic Trainer1184032799
  20. Alexandra ZamudioBehavior Technician1447963046
  21. Susan ZanabriaBehavior Technician1619693736
  22. Jocelin ZaragozaBehavior Technician1902664154
  23. Paria ZarghamravanbakhshEndocrinology, Diabetes & Metabolism Physician1336672591
  24. Jessica ZarifAthletic Trainer1669186052
  25. Alexander ZasteAssistant Behavior Analyst1063306421
  26. Alexis Zavala, BCBABehavior Analyst1639911878
  27. Carolina ZavalaBehavior Technician1689568693
  28. Isel ZazuetaBehavior Technician1679446884
  29. Blanca Zea Kramer, M.S.Behavior Analyst1932401577
  30. Lisa Zec, FNPOccupational Health Nurse Practitioner1962563171
  31. Shaundra Zee, M.S.Behavior Technician1366914525
  32. Faiqa Zeh HusainBehavior Technician1427982875
  33. Timothy ZempoaltecaBehavior Technician1912608845
  34. Leonard ZengBehavior Technician1811589146
  35. Timothy Zeng, OTR/LOccupational Therapist1962391862
  36. Wen ZengBehavior Technician1083591416
  37. Bradley Zerweck, M.D.Hospitalist Physician1003087206
  38. Beldon ZhangBehavior Technician1174447452
  39. Chousheng Zhang, MDDermatology Physician1285712364
  40. Kenny ZhangPharmacist1336671098
  41. Lily ZhangOphthalmology Physician1043771850
  42. Sien ZhangMassage Therapist1568348142
  43. Yong Zhang, MDInternal Medicine Physician1831277920
  44. Lisa Zhao, AU.D.Audiologist-Hearing Aid Fitter1407011679
  45. Yi Zheng, M.D.Gastroenterology Physician1851622427
  46. Enjian ZhongBehavior Technician1053094375
  47. Xinlan ZhouAcupuncturist1528981081
  48. Xiaoyan Zhou-MedagliAcupuncturist1932639549
  49. Jianan ZhuBehavior Technician1982219226
  50. Junyi ZhuBehavior Technician1770280315

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

Walnut Creek, California appears in the CMS National Plan and Provider Enumeration System with 6,170 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 Walnut Creek - 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 Walnut Creek 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 Walnut Creek is weighted toward Behavior Technician (1,764 clinicians, followed by Marriage & Family Therapist with 315 and Pharmacist with 239). 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, Walnut Creek reports roughly 15.8 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, Student in an Organized Health Care Education/Training Program is the most prominent one with no provider currently listing a Walnut Creek practice address, a coverage gap Walnut Creek patients typically fill by traveling to a larger nearby hub.

For Walnut Creek 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 Walnut Creek, CA?

There are 6,170 registered healthcare providers in Walnut Creek, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Walnut Creek?

The most common specialties in Walnut Creek are Behavior Technician, Marriage & Family Therapist, Pharmacist, Behavior Analyst, Internal Medicine Physician. Behavior Technician has the most providers with 1,764.

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.