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 117 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. Ariana WarlichBehavior Technician1225532708
  2. Celine WarnerMarriage & Family Therapist1225999204
  3. Michelle Warner, CMTMassage Therapist1003218454
  4. Laura Warren, CNMAdvanced Practice Midwife1720140973
  5. D'Andre WashingtonBehavior Technician1932827540
  6. Jacquelyn WashingtonMental Health Counselor1467338236
  7. Nicole WashingtonBehavior Technician1386423242
  8. Shamari Washington-PitreBehavior Technician1073363198
  9. Ronald Wasserman, M.D.Infectious Disease Physician1346268067
  10. Susan WatersCommunity Health Worker1154467132
  11. Tiffany Waters, P.A.Surgical Physician Assistant1184652695
  12. Claudia Wathen, PSY.DAddiction (Substance Use Disorder) Psychologist1497802524
  13. Juanita WatkinsBehavior Technician1023835170
  14. Kenshata Watkins, MDPediatric Emergency Medicine (Pediatrics) Physician1245573393
  15. Kristian WatkinsPharmacy Technician1205259710
  16. Lucy Watkins, PHDClinical Psychologist1205983483
  17. Melanie Watkins, M.D.Psychiatry Physician1285720797
  18. Casey WatsonCase Manager/Care Coordinator1144792029
  19. Christa WatsonClinical Psychologist1730492646
  20. Tracie Watson, D.O.Hematology & Oncology Physician1275875965
  21. Travis Watson, RBTBehavior Technician1417423021
  22. Laurie Watters, CRNACertified Registered Nurse Anesthetist1184773988
  23. Seren WattersBehavior Technician1740942689
  24. Milan WeatherspoonBehavior Technician1700761616
  25. Jodi WeaverMarriage & Family Therapist1538934211
  26. Keonte WebbBehavior Technician1922788942
  27. Kyriele WebbBehavior Technician1053952895
  28. Jovance WebsterBehavior Technician1124668637
  29. Catherine Wegner, M.S., CCC-SLPSpeech-Language Pathologist1043368541
  30. David Wei, M.D.Emergency Medicine Physician1437354081
  31. Mandy WeiPharmacist1710411640
  32. Monica WeiRheumatology Physician1417450214
  33. Timothy Wei, M.D., PH.D.Neurology Physician1093762825
  34. Helen Weidemann, MDStudent in an Organized Health Care Education/Training Program1972353613
  35. Sena Weidkamp, LMFTMarriage & Family Therapist1548960636
  36. Michele WeidnerGeneral Practice Registered Nurse1902443757
  37. Andrew WeiherBehavior Analyst1356739270
  38. Melissa Weik, LMFTMarriage & Family Therapist1518613835
  39. Jane Weil, LCSWSpecialist1427125038
  40. Lawrence Weil, M.DPain Medicine Physician1073517678
  41. Scott Weinberg, O.D.Optometrist1063683944
  42. Robert Weingarten, MDEmergency Medicine Physician1952489031
  43. Richard Weinstein, M.D.Internal Medicine Physician1972522407
  44. Stephen Weinstein, MDObstetrics & Gynecology Physician1366556102
  45. Theodore Weis, M.D.Nephrology Physician1679526313
  46. Emanuel Weiss, PSYDPsychologist1164662573
  47. Michael Weiss, MDInternal Medicine Physician1023196185
  48. Michelle WeissBehavior Technician1457030355
  49. Samantha Weiss, LCSWClinical Social Worker1841807914
  50. Debra Weiss Ishai, MDPediatrics Physician1215997119

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.