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 112 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. Adrian Trujillo, PHARMDPharmacist1144552019
  2. Anaicnecerc Trujillo RiveraBehavior Technician1184517534
  3. Jessica TruongBehavior Technician1992585327
  4. Philip Truong, CRNACertified Registered Nurse Anesthetist1477918670
  5. Thanh Truong, PHARM. D.Pharmacist1174674634
  6. Christy Try, LESpecialist1629853288
  7. Eric Tsai, D.M.D.Periodontics1841369386
  8. Fausan Tsai, MDInternal Medicine Physician1285708123
  9. Wilson Tsai, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1609035666
  10. Betty Tsai Do, MDOtolaryngology Physician1629293030
  11. Coco Tsao, NPNurse Practitioner1861068496
  12. Benjamin Tsaur, DDSGeneral Practice Dentistry1689720104
  13. Yee Tse, M.ED.Behavior Analyst1326678053
  14. Bennet TsengStudent in an Organized Health Care Education/Training Program1114778875
  15. Hennessey Tseng, M.D.Cardiovascular Disease Physician1003811746
  16. Lillian Tseng, M.D.Internal Medicine Physician1619016169
  17. Samuel Tseng, MDInternal Medicine Physician1821148636
  18. Evonne Tsou, MDInternal Medicine Physician1457439952
  19. Howard Tsuchiya, MDAnesthesiology Physician1184660672
  20. Jessica Tsuei, MDInternal Medicine Physician1447756796
  21. Bryan TsujimotoPhysician Assistant1124661186
  22. Angela Tu, L AC DMDAcupuncturist1306990791
  23. Mark Tu, M.D.Diagnostic Radiology Physician1144262452
  24. Barbara Tuber-Sooy, MA, MFTMarriage & Family Therapist1366536922
  25. Dale Tucker, MDObstetrics & Gynecology Physician1265510341
  26. Olivia TugwellBehavior Technician1871191288
  27. Tselmeg TulaabaatarBehavior Technician1720776578
  28. Kaitlin Tully, PHDClinical Child & Adolescent Psychologist1548455645
  29. Gerald Tung, PHARM D.Pharmacist1275602641
  30. Kelly TunisonBehavior Technician1578146247
  31. Alexandria TurbervilleBehavior Analyst1861150377
  32. Thibault TurcanBehavior Technician1447961339
  33. Martha Turchyn-Mazuryk, MDGastroenterology Physician1497821979
  34. William TurgeonBehavior Technician1447956198
  35. Dora TurkovichAssistant Behavior Analyst1881197135
  36. Shea TurnbowBehavior Technician1083532576
  37. Meghan Turner, MFTIMental Health Counselor1588199095
  38. Adam TurneyBehavior Technician1013594050
  39. Scott Turtle, P.T.Orthopedic Physical Therapist1023062411
  40. Phoenix TwomeyBehavior Technician1043838022
  41. Tiffany Tyser, NPFamily Nurse Practitioner1073479788
  42. Bianca TysonBehavior Technician1740823327
  43. Nazneen Uddin, M.D.Family Medicine Physician1023456761
  44. Michelle UgaleBehavior Technician1285413773
  45. Laroysha Ulmer, PMHNPPsychiatric/Mental Health Nurse Practitioner1598430647
  46. Kerry Umemoto-LeongPharmacist1770015430
  47. Alex UngPhysical Therapist1982203071
  48. Shoshana Ungerleider, M.D.Internal Medicine Physician1518283787
  49. Robyn UnverferthRegistered Nurse1215416573
  50. Harpreet Uppal, NDNaturopath1982362042

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.