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 120 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. Jim (james) Wolfe, MFTMarriage & Family Therapist1023198413
  2. Marianne WolfeBehavior Technician1568074094
  3. Donald Wolff, MDOphthalmology Physician1821002619
  4. Jay WolffBehavior Technician1659225506
  5. John Woll, MDOrthopaedic Surgery Physician1508944687
  6. Lisa Woll, MDInternal Medicine Physician1386716033
  7. Carol Wolleson, MFTMarriage & Family Therapist1124052196
  8. Stephanie Wolper, LCSWClinical Social Worker1992731731
  9. Charlotte Wolter, M.F.T.Marriage & Family Therapist1619981974
  10. Rosa Won, M.D.Maternal & Fetal Medicine Physician1952489718
  11. Sara Won, MDObstetrics & Gynecology Physician1003134180
  12. Christine Wong, NPFamily Nurse Practitioner1699988824
  13. Christopher Wong, DDSGeneral Practice Dentistry1912198953
  14. Christopher Wong, DPTPhysical Therapist1053039156
  15. Eden Wong, OTR/LOccupational Therapist1003511965
  16. Edlen Wong, PHARM.D.Pharmacist1659670537
  17. Joseph Wong, O.D. , C.R.A.Optometrist1992741763
  18. Kammie WongFamily Nurse Practitioner1992863997
  19. Kenneth Wong, MDAnesthesiology Physician1487682183
  20. Mark Wong, DDSDentist1538363437
  21. Mei WongClinical Social Worker1851966717
  22. Oi Lam WongBehavior Technician1033719950
  23. Stacy Wong, DPTSports Physical Therapist1447428412
  24. Stella WongBehavior Technician1396597035
  25. Stephanie Wong, M.D.Anesthesiology Physician1942590161
  26. Stephanie WongPharmacist1306379375
  27. Susan Wong, PHARM DPharmacist1750449807
  28. Teresa Wong, PHARM.D.Pharmacist1528241502
  29. Victor Wong, PHARM.D.Pharmacist1528590973
  30. Vincent Wong, MDDiagnostic Radiology Physician1366691099
  31. Wendy Wong, M.D.Adult Reconstructive Orthopaedic Surgery Physician1356584007
  32. Winslow Wong, MDInternal Medicine Physician1861566168
  33. David Woo, M.D.Vascular & Interventional Radiology Physician1407988272
  34. Harold Woo, DOEmergency Medicine Physician1477627784
  35. Rebecca WooMarriage & Family Therapist1508577651
  36. Sarah Woo, PHARM DPharmacist1972604924
  37. Younhi Woo, PHDPharmacist1417571845
  38. Brenda Wood, MOT, OTR/LOccupational Therapist1801654207
  39. Kathleen Wood, S.L.P.Speech-Language Pathologist1700932720
  40. Mary WoodCertified Registered Nurse Anesthetist1518004183
  41. Nina WoodBehavior Technician1124631155
  42. Sarah Woodard-RollstinBehavior Technician1225680374
  43. Margarita Woodbury, MDPsychiatry Physician1104018498
  44. Brett WoodrufffBehavior Technician1184108367
  45. Debvora WoodsMental Health Counselor1952665986
  46. Yolanda WoodsBehavior Technician1689237992
  47. Victoria Woolery, R.D.Registered Dietitian1568518843
  48. Brook Woolley, M.D.Emergency Medicine Physician1003039538
  49. Kayla WoonMental Health Counselor1215804612
  50. William Workman, M.D.Orthopaedic Surgery Physician1952376352

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.