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 64 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. Simone Levinson, PSYDPsychologist1306053186
  2. Stephen Levit, M.D.Pain Medicine Physician1730421603
  3. David Levy, MDHospitalist Physician1740368844
  4. Jennifer Levy, MDNeonatal-Perinatal Medicine Physician1619934692
  5. Joyce LevyBehavior Technician1982435905
  6. Bobbie LewisBehavior Technician1164040994
  7. Brad Lewis, MDPediatrics Physician1871671974
  8. Daniel Lewis, MDEmergency Medicine Physician1770661829
  9. Donald Lewis, M.D.Orthopaedic Hand Surgery Physician1508816851
  10. Elisa Lewis, LCSWClinical Social Worker1376875237
  11. Imonie Lewis, PTAPhysical Therapy Assistant1134857113
  12. Malayasia LewisBehavior Technician1114658846
  13. Douglas LezametaBehavior Technician1326925371
  14. Fanny LezametaBehavior Technician1588541536
  15. Jeniece LezerBehavior Technician1215808506
  16. Albert Li, PHARMDPharmacist1679632426
  17. Amity LiPharmacist1790264562
  18. Dennis LiStudent in an Organized Health Care Education/Training Program1356924559
  19. Fengmei LiMarriage & Family Therapist1487409900
  20. Guo LiPharmacist1720364235
  21. Lihua LiPharmacist1770015166
  22. Lili Li, D.M.D.General Practice Dentistry1396815684
  23. Qun Li, L.AC.Acupuncturist1902979867
  24. Vincent Li, PHARM.D.Pharmacist1609009430
  25. Yi Ling Li, MDPsychiatry Physician1033774096
  26. Zhuo Li, PHARM.DPharmacist1336670298
  27. Alan Liang, DPTPhysical Therapist1205582764
  28. Garrett Liang, PT, DPTPhysical Therapist1841708328
  29. Tsao-Yu Liang, MDHospitalist Physician1053499137
  30. Yungting Liao, MDHospitalist Physician1780696039
  31. Robin Lie, DPMPodiatrist1689785131
  32. Haywon Lieh, MDAnesthesiology Physician1013952308
  33. Dao Lieu, PHARM.DPharmacist1164569885
  34. David Lilienstein, MDEmergency Medicine Physician1750571212
  35. Andrea Lim, MDInternal Medicine Physician1235217308
  36. Christina Lim, PHARM.D.Pharmacist1730518960
  37. Elaine LimSurgical Physician Assistant1982267290
  38. Jean Lim, R.N.Registered Nurse1659673705
  39. Mira Lim, M.D.Ophthalmology Physician1194987628
  40. Semi Lim, D.M.DPeriodontics1275652943
  41. Zachary LimCommunity Health Worker1669337028
  42. Rosemary Lima, MABehavior Technician1124598206
  43. Andrew Lin, M.D.Nephrology Physician1558484857
  44. David Lin, M.D.Gastroenterology Physician1982664041
  45. David Lin, M.D.Anesthesiology Physician1649537838
  46. Edward Lin, MD, MPHEmergency Medicine Physician1629226337
  47. Emily LinFamily Medicine Physician1477137669
  48. Hsiu-Wei Lin, MDCritical Care Medicine (Internal Medicine) Physician1427136514
  49. Josephine Lin, MA, BCBABehavior Analyst1912372244
  50. Mandy LinBehavior Technician1992309751

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.