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 104 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. Jessica SnyderDoula1295524858
  2. Peggy Snyder, PH.D.Psychologist1578585840
  3. Shaina Snyder, OTR/LOccupational Therapist1811766579
  4. Kirk So, M.D.Diagnostic Radiology Physician1780610345
  5. Simpson So, MDVascular & Interventional Radiology Physician1841378940
  6. Jeffrey Sobel, MDCardiovascular Disease Physician1659459733
  7. Lauren Sobel, DO, MPHObstetrics & Gynecology Physician1184087199
  8. Demilson Soc RodasBehavior Technician1780577718
  9. Negar Sodeifi, MDNeurology Physician1437321429
  10. Amandeep SohalPharmacist1902200942
  11. Amandeep Sohal, RTRegistered Respiratory Therapist1992269716
  12. Jasleen Sohal, M.D.Family Medicine Physician1003045220
  13. Grace Sohn, M.D.Dermatology Physician1023405727
  14. Elahe Soleimani NooriBehavior Technician1023518743
  15. Angela SolisBehavior Technician1386565034
  16. Emelyn SolisBehavior Technician1366333940
  17. Oliver SolisPsychologist1740758390
  18. Vanessa Solis, LCSWClinical Social Worker1740421643
  19. Allan Solomon, PH.D.Clinical Psychologist1417931692
  20. Leandra Solomon, RDHAPDental Hygienist1568382380
  21. Mia SolomonBehavior Technician1871389809
  22. Patrice Solomon, PH.D.Clinical Psychologist1669601647
  23. Ricardo SolorioOrthotic Fitter1104013382
  24. Samantha SolorioBehavior Technician1801699608
  25. Paula SoltaniMarriage & Family Therapist1376144634
  26. Amanda Somberg, LMFTMarriage & Family Therapist1245560325
  27. Marisa Sommerhalder, AMFTMental Health Counselor1194448274
  28. Anly Song, MDCardiovascular Disease Physician1093893166
  29. Dennis Song, MDPlastic Surgery Physician1982874657
  30. Michael Song, D.O.Pain Medicine Physician1760756597
  31. Karen Sonnenthal, N.P.Nurse Practitioner1942229463
  32. Tami Sonnier, MFTMarriage & Family Therapist1659553915
  33. Valerie Sonnikson, LMFTMarriage & Family Therapist1225318801
  34. Krystal Sood, MDInternal Medicine Physician1114585494
  35. David Soohoo, M.D.Emergency Medicine Physician1174547046
  36. Gabriela SorianoBehavior Technician1649980814
  37. Marivelle SorianoBehavior Technician1871378422
  38. Nicole Soriano, LMFTMarriage & Family Therapist1205490703
  39. Hormozan Sorooshian, PHARM.D.Oncology Pharmacist1326107145
  40. Richard Sorrentino, ATRMental Health Counselor1497984751
  41. Sabrina SorvariBehavior Technician1790673481
  42. Dayana SosaBehavior Technician1669219903
  43. Robert Sosa, MDInternal Medicine Physician1902984008
  44. Daniela Sosa RamosBehavior Technician1609724616
  45. Alejandra SotoBehavior Technician1316587074
  46. Scarlette SotoBehavior Technician1780313189
  47. Victoria SotoBehavior Technician1285478628
  48. Ana Soto-OrtizBehavior Technician1669946919
  49. Ernesto SotomayorBehavior Technician1487253126
  50. Jordan SouksamlaneBehavior Technician1043185853

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.