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.

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. Eric AaserudeEmergency Medicine Physician1811491194
  2. Hangama Abassi, N.P.Nurse Practitioner1487083655
  3. Amata AbatchaBehavior Technician1508589391
  4. Josette Abbas, BCBABehavior Analyst1407357916
  5. Derek Abbassi, MDObstetrics & Gynecology Physician1841364155
  6. Christine Abboud, D.O.Anesthesiology Physician1174901508
  7. Jessica Abdalla, PHDClinical Psychologist1558069211
  8. Ammarah Abdul -RaheemBehavior Technician1780490813
  9. Sana AbdulhaiBehavior Technician1801743661
  10. Joanne Abel, MARRIAGE FAMILY THERMarriage & Family Therapist1316004773
  11. Krista Abendroth, RBTBehavior Technician1346735289
  12. Abby Claire AbenesBehavior Technician1861183980
  13. Lauren Ables, D.O.Family Medicine Physician1710413299
  14. Sara AboeiBehavior Technician1306435938
  15. Aseala Abousaud, PHARMD, BCOP, APHOncology Pharmacist1396611869
  16. Shayna Abraham, MADoula1316864697
  17. Lauren Abrahamson, CNM, NP, MSNAdvanced Practice Midwife1225695869
  18. Chelsea AbreuMental Health Counselor1669813689
  19. Ronald Abrew, A.T.,C.Athletic Trainer1245245083
  20. Paul Abrinko, MDPsychiatry Physician1912081308
  21. Laila AbtahiBehavior Technician1437655750
  22. Joel Acab, MDInternal Medicine Physician1518405661
  23. Peter Ackerman, MDEmergency Medicine Physician1427435023
  24. Garret AcordBehavior Technician1043794191
  25. Aaron Mark Acosta, DOEmergency Medicine Physician1538789987
  26. Basil Adad, MDOtolaryngology Physician1487732574
  27. Jennifer AdamiBehavior Analyst1215399985
  28. Bryanna AdamsBehavior Technician1780185355
  29. Ria AdamsBehavior Technician1447901806
  30. Amber AddisonBehavior Analyst1902382914
  31. Praise AdebilejeBehavior Technician1710815311
  32. Geoffrey Adey, MDNeurological Surgery Physician1447362520
  33. Seble AdniewBehavior Technician1972146561
  34. Jasmine Agapinan, LCSWClinical Social Worker1417610288
  35. Andrea Agcaoili, D.O.Family Medicine Physician1265775035
  36. Morgan Agee, BCBABehavior Analyst1558913301
  37. Piyush Aggarwal, MDColon & Rectal Surgery Physician1700070273
  38. Sonal Aggarwal, MDFamily Medicine Physician1336336411
  39. Victoria Agnost, M.D.Pediatrics Physician1972630804
  40. Desiree AgostoFamily Nurse Practitioner1235907197
  41. Jorge Aguilar, M.D.Anesthesiology Physician1275777641
  42. Lidia AguilarBehavior Technician1003688524
  43. Miguel AguilarBehavior Technician1003580309
  44. Nicholas AguilarBehavior Technician1194455774
  45. Preanna AguilarBehavior Technician1033048046
  46. Stephanie AguilarSpecialist1275413072
  47. Delanney Aguillar-MartinezOther Specialist/Technologist1780552927
  48. Thomas Ahlborn, PH.D. LACAcupuncturist1689014342
  49. Helaluddin Ahmad, PHARMDPharmacist1386495604
  50. Hebron AhmadiBehavior Technician1235945692

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.