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 119 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. Bryonny Williams, PA-CPhysician Assistant1801785423
  2. Erin Williams, EDS,PPS, NCSPSchool Psychologist1851066526
  3. Jalen WilliamsBehavior Technician1790566362
  4. Jamara WilliamsBehavior Technician1316517030
  5. Jamesha WilliamsBehavior Technician1427719772
  6. Jamie Williams, LCSWClinical Social Worker1245879725
  7. Jayson Williams, HADHearing Instrument Specialist1932449618
  8. Julie Williams, PSY.D.Clinical Psychologist1265748636
  9. Keri WilliamsBehavior Technician1841933249
  10. Mahal WilliamsBehavior Technician1205764685
  11. Mary Williams, RN, MS, FNPNurse Practitioner1174602825
  12. Nicholas WilliamsMassage Therapist1942155932
  13. Revette WilliamsMental Health Counselor1619845922
  14. Sydney Williams, PA-CPhysician Assistant1457694200
  15. Veronica WilliamsBehavior Technician1306600671
  16. Zakia WilliamsBehavior Technician1184271736
  17. Iris WilliamsonBehavior Technician1326931882
  18. Chelsy Willis, BABehavior Technician1548814528
  19. Cymone WillisBehavior Technician1568347326
  20. Gregory WillisAcupuncturist1326552902
  21. James WillisBehavior Technician1639773583
  22. Janae WillisBehavior Technician1508741141
  23. Michelle WillisMental Health Counselor1265608822
  24. Robinson Wills, P.T.Orthopedic Physical Therapist1932405545
  25. Andrea Wilson, BCBABehavior Analyst1891047833
  26. Angela Wilson, PAPhysician Assistant1912594904
  27. Laura Wilson, D.C.Chiropractor1083960991
  28. Mackenzie WilsonSpeech-Language Pathologist1922969617
  29. Michelle WilsonBehavior Technician1700641008
  30. Montana WilsonBehavior Technician1396506341
  31. Patricia WilsonBehavior Analyst1215493051
  32. Thein Win, MDHospitalist Physician1932287091
  33. Perlita WinfreyBehavior Technician1841022654
  34. Vivian Wing, M.D.Diagnostic Radiology Physician1780620088
  35. Hugh Winig, M.D.Psychiatry Physician1033299870
  36. Sarah WinklerBehavior Analyst1679934202
  37. Barbara Wintch, RN, IBCLCLactation Consultant (Registered Nurse)1184834921
  38. Hannah WiratungaBehavior Technician1265282966
  39. Lauren WisdomAcute Care Nurse Practitioner1477109668
  40. Alphaeus Wise, M.D.Family Medicine Physician1265475628
  41. D. Miller Wise, MDPlastic Surgery Physician1629120431
  42. Craig Wiseman, M.D.Orthopaedic Surgery Physician1558386524
  43. Robert Wiskocil, MDRheumatology Physician1992883094
  44. Elaine With, MSMarriage & Family Therapist1417038928
  45. David Wixson, M.D.Diagnostic Radiology Physician1508893504
  46. Sandra Wohali, LCSW, MATClinical Social Worker1346903077
  47. Caleb WoldemariamBehavior Technician1164019907
  48. Erin Wolf, MDGastroenterology Physician1245733062
  49. Solomon Wolf, MDPsychiatry Physician1801801329
  50. Carolyn Wolf-Flores, MABehavior Technician1114491081

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.