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 3 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. Jennifer Allen, LMFTCounseling Psychologist1306431465
  2. Holly AlleyRegistered Nurse1417281502
  3. Diana Allocco, FNP-BCFamily Nurse Practitioner1275961609
  4. Desiree Allyn, FNP, MSNFamily Nurse Practitioner1669616587
  5. Dorothy Almajose DaffonBehavior Technician1770239519
  6. Karen Alman, R.D.Registered Dietitian1295030377
  7. Mehrnoosh Almassi, MDObstetrics & Gynecology Physician1679622872
  8. Megan AloisioBehavior Analyst1366817207
  9. Susan Alonso, LCSWClinical Social Worker1922259084
  10. Erica AlonzoBehavior Technician1366335978
  11. Narayah AlooBehavior Technician1184423220
  12. Crystal Alpert, PA-CMedical Physician Assistant1821225319
  13. Russell Alpert, M.D.Family Medicine Physician1235182544
  14. Jazz AlsandorBehavior Technician1093598609
  15. Rawan AlsarayjiBehavior Technician1033693197
  16. Michael Altergott, D.M.DGeneral Practice Dentistry1447370465
  17. Stefanie Altmann, DOInternal Medicine Physician1912494188
  18. Jacquline AlvaradoMarriage & Family Therapist1376117374
  19. Laura AlvaradoBehavior Technician1124997010
  20. Natalie Alvarado, BEHAVIOR TECHNICIANBehavior Technician1003442237
  21. Ana AlvarezBehavior Technician1093285660
  22. Ariana AlvarezBehavior Technician1346730769
  23. Avin AlvarezBehavior Technician1043030182
  24. Brianna AlvarezBehavior Technician1164312930
  25. Buun AlvarezBehavior Technician1518746361
  26. Gabriela AlvarezSchool Counselor1205763695
  27. Haley AlvarezBehavior Technician1295520393
  28. Kayla AlvarezBehavior Technician1801397278
  29. Melissa AlvarezMarriage & Family Therapist1780182733
  30. Zaira AlvarezBehavior Technician1306663141
  31. Carmen Alvarez Mendoza, MABehavior Technician1922571652
  32. John Ephraim Alviz, MAOT, OTR/LOccupational Therapist1770356362
  33. George AmadorBehavior Technician1306400403
  34. Vernice AmaganBehavior Technician1821887175
  35. Zhanar AmangaleyevaCounselor1811842610
  36. Michael AmaralAdult Companion1134962467
  37. Pele AmatagaBehavior Technician1164359014
  38. Megha AmbatiInternal Medicine Physician1083849111
  39. Hosanna Ambegia-VinoyaBehavior Technician1316590375
  40. Katherine Ambrose, MS, OTR/LPediatric Occupational Therapist1952709750
  41. Mary Amendola, RNHigh-Risk Obstetric Registered Nurse1659293793
  42. Suzanne Amendt, LCSWClinical Social Worker1629588231
  43. Michael AmezcuaOrthotic Fitter1346437605
  44. Maryam Amini, MDFamily Medicine Physician1245402072
  45. Niki AminiBehavior Technician1457159154
  46. Kasra Amirdelfan, MDPain Medicine Physician1033113642
  47. Kathy Amiri, MFTMarriage & Family Therapist1922273085
  48. Sohrab Amiri, M.D.Internal Medicine Physician1811420243
  49. Sweeta AmiriBehavior Technician1548194954
  50. Sharon AmoahBehavior Technician1710831409

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.