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 63 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. Krysten LeeBehavior Technician1073181178
  2. M.y. James Lee, MDInternal Medicine Physician1225181829
  3. Maria Lee, PHARM DPharmacist1508398611
  4. Min-Wei Lee, M.D.Dermatology Physician1124014741
  5. Miracle LeeBehavior Technician1063225506
  6. Olivia LeeBehavior Technician1376464495
  7. Phyllis Lee, RD CNSDRegistered Dietitian1437206661
  8. Pyng Lee, MS, RDDietary Manager1710037171
  9. Sandra Lee, L.AC.Acupuncturist1871711838
  10. Selina Lee, PHARM. D.Pharmacist1639231301
  11. Steven Lee, M.D.Orthopaedic Surgery of the Spine Physician1699725945
  12. Vivien Lee, DMDDental Anesthesiology1477203214
  13. William Lee, LCSWClinical Social Worker1700034253
  14. Mary Lee-Lau, PSY.D.Clinical Psychologist1982744801
  15. Marcos Lee-RamosBehavior Technician1669150629
  16. Lori Lee-TonkinBehavior Technician1700345139
  17. Sujata Legend, PSY DClinical Child & Adolescent Psychologist1962658138
  18. Jennifer LehmannMental Health Counselor1881888295
  19. Melissa Lehmer, MDNeurology Physician1699922252
  20. Shlomo Leibowich, MDDiagnostic Radiology Physician1992763668
  21. Margo Leick, PH.D.Psychologist1811033806
  22. Joel LemusBehavior Technician1821704461
  23. Julie LenhardtClinical Social Worker1932701158
  24. Camille LennonBehavior Technician1669252672
  25. Brian Lentz, MD, MSEmergency Medicine Physician1710421284
  26. Shannah LentzBehavior Technician1174132310
  27. Sabra Leomo, RD, CSGRegistered Dietitian1700699048
  28. Carol Leon, RCPRegistered Respiratory Therapist1245997691
  29. Claudia Leon, BABehavior Technician1407326515
  30. Miriam LeonBehavior Technician1760188809
  31. John Leonard, M.DEmergency Medicine Physician1578582961
  32. Yajuan Leonard, APRNNurse Practitioner1336160456
  33. Craig Leong, M.D.Retina Specialist (Ophthalmology) Physician1639103344
  34. Lillian Leong, DOFamily Medicine Physician1730251059
  35. Vicky LeongPharmacist1720510480
  36. Dimitry Lerner, M.D.Gynecologic Oncology Physician1992965354
  37. Shani Lerner, MDObstetrics & Gynecology Physician1144714874
  38. Marla Lerner-Powers, DCChiropractor1265962971
  39. Barbara Lerner-Ramirez, D.C.Chiropractor1336341353
  40. Joann Leskovar, MSWSocial Worker1710078910
  41. Sandra LessendenMarriage & Family Therapist1679693337
  42. Mickell LethcoPsychologist1912350919
  43. Allan Leung, PHDClinical Psychologist1558425413
  44. Kwok Leung, MFTMarriage & Family Therapist1245395987
  45. Trevor LeungBehavior Technician1588405757
  46. Brent Levenfeld, MDHospitalist Physician1154409233
  47. Rose Levenson-Palmer, MD, PHDPsychiatry Physician1295316768
  48. Theodore Levin, MDGastroenterology Physician1720166820
  49. Gabrielle Levine, MDSurgery Physician1851479919
  50. Peter Levine, MDPediatrics Physician1184702268

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.