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 111 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. Napeena ToorSpeech-Language Pathologist1427238971
  2. Brian Topkis, M.D.Ph.D. Medical Genetics1265524706
  3. Alexander TorresBehavior Technician1467313775
  4. Anna Torres, NPNurse Practitioner1447851324
  5. Joanna TorresBehavior Technician1134851496
  6. Joseph Torres, P.A.Surgical Physician Assistant1710915228
  7. Melissa TorresBehavior Technician1033813977
  8. Nathalie TorresBehavior Technician1043903156
  9. Nicole TorresBehavior Technician1124681077
  10. Reesa TorresBehavior Technician1306526918
  11. Michael Torrest, MDEmergency Medicine Physician1750460887
  12. Billy TorrezOccupational Therapist1518122415
  13. Louis ToscanoBehavior Technician1972384824
  14. Kathleen Toups, M.D.Psychiatry Physician1396873196
  15. Tiziana Towle, DDS 48391 DENTISTGeneral Practice Dentistry1093104804
  16. Arianna ToyBehavior Technician1245129113
  17. Evangeline ToyBehavior Technician1386430825
  18. David Trachtenberg, MDGeriatric Psychiatry Physician1023249869
  19. Connie Tracy, CRNACertified Registered Nurse Anesthetist1023169596
  20. Jennifer Tracy, HIGH SCHOOL DIPLOMABehavior Analyst1356786305
  21. Julie Traje, PHARMDPharmacist1619297512
  22. Tara Trakin, MS, RDRegistered Dietitian1336778331
  23. Jay TramBehavior Technician1346940285
  24. Andrew TranBehavior Technician1598410268
  25. Casey Tran, PHARMDPharmacist1659863827
  26. Christopher Tran, M.D.Diagnostic Radiology Physician1831126952
  27. Dianna Tran, P.T.Physical Therapist1558610642
  28. Hai Tran, M.D., FASAAnesthesiology Physician1124269675
  29. Hien TranPharmacist1487963617
  30. Jeffrey Tran, PA-CPhysician Assistant1134734205
  31. Lee Tran, PH.D.Ph.D. Medical Genetics1629593652
  32. Levina Tran, M.D.Pediatric Anesthesiology Physician1841428984
  33. Mai-Anh Tran, CNMAdvanced Practice Midwife1982861126
  34. Nguyen Tran, O.D.Vision Therapy Optometrist1255587291
  35. Nina TranBehavior Technician1255117255
  36. Peter Tran, MDCardiovascular Disease Physician1275633216
  37. Thuy Tran, DPTPhysical Therapist1184034712
  38. Van TranBehavior Technician1790347912
  39. Jeffrey Traynor, M.D.Maternal & Fetal Medicine Physician1316981699
  40. Axel TrejoBehavior Technician1720839913
  41. Victor TrejoBehavior Technician1477319127
  42. Rebecca TremayneBehavior Technician1295382687
  43. Gina TrentBehavior Technician1548087679
  44. Ana Triana, M.D.Family Medicine Physician1992863138
  45. April Tritto, M.D.Obstetrics & Gynecology Physician1184825135
  46. John Trix, MS, RN, APRN-BCNurse Practitioner1477745685
  47. Kelly Troche, MTMassage Therapist1053001610
  48. Lisa Trompas, BS PSYCHOLOGYBehavior Technician1942774393
  49. Justin TropPsychiatry Physician1922627116
  50. Monica TrostPsychologist1013709260

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.