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 66 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. Kristina LockwoodPhysical Therapist1437405396
  2. Lauren Lockwood, C.N.M., WHNPAdvanced Practice Midwife1356777130
  3. Dwight Loder, DDSGeneral Practice Dentistry1538287784
  4. Matthew Lodewick, MDAllergy & Immunology Physician1922091362
  5. John Loeb, M.D.Rheumatology Physician1932106390
  6. Alexsa LoeraBehavior Technician1578247144
  7. Sally LograssoMarriage & Family Therapist1356564165
  8. Emily Lohmeyer, LCSWClinical Social Worker1194254706
  9. Camille LohseBehavior Technician1588484059
  10. Lisa LombardoBehavior Technician1861223141
  11. Yazmin LomeliBehavior Technician1184559841
  12. Alejandra LondonoBehavior Technician1760180392
  13. Aziza Long, PHARM DPharmacist1891126033
  14. Franklin Long, MD MPHTMFamily Medicine Physician1194744045
  15. Joseph Long, MDInternal Medicine Physician1225116379
  16. Margaret LongPsychologist1487029476
  17. Merrill LongAcupuncturist1821486325
  18. Michael Long, P.T.Physical Therapist1316008519
  19. Taylor LongBehavior Technician1588533921
  20. William Longton, MDAnesthesiology Physician1275625204
  21. Benjamin Longwell, D.O.Anesthesiology Physician1548623671
  22. Gary Lons, MSWClinical Social Worker1619544871
  23. Patricia Loo, P.A.Surgical Physician Assistant1083755862
  24. Benjamin Loos, MDOtolaryngology Physician1457441214
  25. Belinda LopesClinical Psychologist1093932246
  26. Alexandra LopezBehavior Technician1669170841
  27. Ana Lopez, DMDPediatric Dentistry1740390285
  28. Antonio LopezBehavior Technician1295331197
  29. Benjamin Lopez, PAPhysician Assistant1881153187
  30. Claudia LopezBehavior Technician1619698222
  31. Jeannie Lopez, PHDClinical Neuropsychologist1568094613
  32. Lauren LopezBehavior Technician1114802972
  33. Niceto Lopez, MDHospitalist Physician1003012931
  34. Olivia LopezBehavior Technician1679495550
  35. Stefany LopezAssistant Behavior Analyst1376160036
  36. Vanessa LopezBehavior Technician1053011080
  37. Vanessa LopezBehavior Technician1275308405
  38. Veronica Lopez, BEHAVIOR THERAPYBehavior Technician1720682669
  39. Yaire LopezBehavior Technician1558049411
  40. Alexandra Lopez HenriquezBehavior Technician1871334391
  41. Gisela Lopez Payares, M.D.Anesthesiology Physician1679832422
  42. Kiara Lopez-Giambastiani, BCBABehavior Analyst1356720205
  43. Kate Loranger, M.S., L.C.G.C.Genetic Counselor (M.S.)1972702918
  44. Margarita Lorence, PHDPsychologist1235486523
  45. Elese Lorentzen, LCSWClinical Social Worker1316529555
  46. Anna Lou, MDPhysical Medicine & Rehabilitation Physician1649358185
  47. Quintin Louie, D.M.D.Dentist1316073117
  48. Terence Louie, DMD,MSDentist1295860278
  49. Tracy LovelessBehavior Technician1427871474
  50. Michael LovellAddiction (Substance Use Disorder) Counselor1669027397

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.