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 5 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. Daoud ArakozieBehavior Technician1427843572
  2. Indulatha Aramandla, M.D.Psychiatry Physician1295831014
  3. Andrea Araujo, MDBehavior Technician1134984925
  4. Cheri Arbizu, MSN, FNPFamily Nurse Practitioner1205922630
  5. Deborah Arce, M.D.Internal Medicine Physician1841215605
  6. Kayla ArchimedeBehavior Technician1306321401
  7. Lisa Arcilla, MDPediatric Cardiology Physician1649430364
  8. Elvio Ardilles, MDPulmonary Disease Physician1518905322
  9. Alexandra Arenson, DOAddiction Medicine (Family Medicine) Physician1689170573
  10. Stephanie Arganbright SimpsonProfessional Counselor1790269835
  11. Katherine ArgueBehavior Technician1790644979
  12. Adriana AriasBehavior Technician1821643818
  13. Yadira Arias, M.SBehavior Technician1043949605
  14. Anette Arias-VillegasBehavior Technician1548055361
  15. Hector AristimunoPathology Technician1497531685
  16. Nancy Arkwright, OTROccupational Therapist1851340053
  17. Marion ArmstrongPediatric Nutrition Registered Dietitian1154473908
  18. Ashley ArrazolaBehavior Technician1699250282
  19. Jackeline Arredondo MartinezBehavior Technician1316864515
  20. Dalia ArrendondoBehavior Technician1275362659
  21. Anthony Arroyo, MDInternal Medicine Physician1376621458
  22. Amir Arsanjani, MDUrology Physician1154486793
  23. Lynn Arsenault, MDPediatrics Physician1972681054
  24. Celeste ArteagaBehavior Technician1275118630
  25. Yamilets ArvizuBehavior Technician1457918245
  26. Audrey Arzamendi, M.D.Endocrinology, Diabetes & Metabolism Physician1508159567
  27. Job Asad, D.C., B.SCSports Physician Chiropractor1669747143
  28. Daniel Asatani, D.D.S.General Practice Dentistry1598843583
  29. Jayne Asatani, D.D.S.General Practice Dentistry1831787456
  30. Noah Asch, PSY.D.Clinical Psychologist1992393326
  31. Cynthia AshbrookAllergy & Immunology Physician1386786408
  32. Hovik Ashchyan, MDDermatology Physician1710477088
  33. Lisa Ashe, PTPhysical Therapist1487470514
  34. Brittany Ashlock, MD, PHD, MPHHospitalist Physician1952728099
  35. Alice AsisaBehavior Technician1609799394
  36. Audrielle Angela Asuncion, OTR/LHand Occupational Therapist1689455016
  37. Viana AsuncionBehavior Technician1689526238
  38. Patricia Anne AtalInternal Medicine Physician1598384737
  39. Chelsea AtchleyBehavior Technician1194374777
  40. Vikram AtiBehavior Technician1528871167
  41. Joey Au, R.D.Registered Dietitian1992860357
  42. Amanda Augello-Chen, OTR/LOccupational Therapist1306419676
  43. Helen Aumann, PHARM.D.Pharmacist1467906867
  44. Dominique AustinBehavior Technician1447946983
  45. Patricia Austin, MD, INC.Ophthalmology Physician1790888196
  46. Kati AuxierOrthotic Fitter1699962951
  47. Loryn AvalosBehavior Technician1932421138
  48. Karina Avalos-De La CruzSpecialist1679389357
  49. Julia Avedisian-Aguilar, MFTMarriage & Family Therapist1972614162
  50. Maya AvetisovBehavior Technician1255177382

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.