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 103 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. Ashley SkillmanBehavior Technician1013491372
  2. Kandece SkinnerSchool Psychologist1619598232
  3. Kelsey SkinnerBehavior Technician1912531914
  4. Mychal Skipper, HIGH SCHOOL DIPLOMABehavior Analyst1346685393
  5. George Slater, M.D.Internal Medicine Physician1891715611
  6. Richard Slawsky, M.D.Psychiatry Physician1669528410
  7. Lina Sleem-Ghannam, MSOM. L.ACAcupuncturist1891239984
  8. Tameyah SlocumBehavior Technician1528776960
  9. Mark Slomoff, M.D.Emergency Medicine Physician1548284409
  10. Khyia SloneBehavior Technician1457214116
  11. Ashley Slonim, FNPFamily Nurse Practitioner1326334145
  12. Mark Slootsky, M.D.Pulmonary Disease Physician1396124749
  13. E. Robin Slovak, MDDermatology Physician1073665881
  14. Agne Sluckaite, LMFTMarriage & Family Therapist1861539017
  15. Gregory SlyBehavior Analyst1902287402
  16. Rebecca Small, NPAdult Health Nurse Practitioner1346801719
  17. Lacy SmalleyClinical Psychologist1295049328
  18. Kimberly SmartAssistant Behavior Analyst1457855124
  19. Lindsey SmedleyMental Health Counselor1598566465
  20. Alex Smirnoff, M.D.Psychiatry Physician1649329681
  21. Marissa SmitMarriage & Family Therapist1508599895
  22. Alexis Smith, PSY.D.Clinical Psychologist1063741601
  23. Allison Smith, LMFTMarriage & Family Therapist1750446993
  24. Andrew Smith, M.D.Urology Physician1174793806
  25. Andrew SmithBehavior Technician1740042860
  26. Benita Smith, LCSWClinical Social Worker1346349032
  27. Cristopher SmithBehavior Technician1578432688
  28. Daniel SmithOrthotic Fitter1487841664
  29. Diana SmithBehavior Technician1255108494
  30. Erica SmithCase Manager/Care Coordinator1578174058
  31. Erika SmithMarriage & Family Therapist1508319807
  32. Irene Smith, MFTMarriage & Family Therapist1073726881
  33. Janelle SmithOther Technician1376201558
  34. Joel Smith, RN, L.ACAcupuncturist1053898577
  35. Justin SmithBehavior Technician1427734979
  36. Karen Smith, M.A.Behavior Analyst1760817118
  37. Kathleen Smith, M.D.Pediatrics Physician1053412528
  38. Kimalae SmithBehavior Technician1538954854
  39. Laresha SmithBehavior Analyst1396246484
  40. Lynn Smith, O.D.Optometrist1942346655
  41. Mackayla SmithBehavior Technician1962001271
  42. Rita Smith, PHDClinical Psychologist1215335161
  43. Robert Smith, COOrthotist1528364098
  44. Sara SmithOrthotic Fitter1477374270
  45. Shelby Smith, PSY.D.Addiction (Substance Use Disorder) Psychologist1225581804
  46. Tina Smith, MDPlastic Surgery Physician1922150143
  47. Warren Smith, MDSpecialist1497816656
  48. Zoe Snortum-PhelpsBehavior Technician1972198034
  49. Birgitta Snyder, PH.D.Cognitive & Behavioral Psychologist1578627873
  50. Griffin Snyder, PPS SCHOOL PSYCHSchool Psychologist1457177461

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.