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 65 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. Oliver Lin, M.D.Gastroenterology Physician1497981575
  2. Serena LinObstetrics & Gynecology Physician1366650889
  3. Shu-Ling Lin, L.ACAcupuncturist1255251245
  4. Young Sin Lin, M.D.Anesthesiology Physician1457514176
  5. Emily Linaman, MSW, LCSWClinical Social Worker1932479987
  6. Abigail LinasBehavior Technician1255201521
  7. Charlene Lincoln, L.AC.Acupuncturist1619295300
  8. Anja Lindblad, NDNaturopath1932355815
  9. Jiena LindborgBehavior Technician1154822153
  10. Andrew Lindeman, M.S.Marriage & Family Therapist1639405590
  11. Mahsa Lindeman, MS, LMFTMarriage & Family Therapist1811131857
  12. James Lindenauer, MPTPhysical Therapist1144432345
  13. Sandra Lindholm-Norman, PSYD, NP-CWomen's Health Nurse Practitioner1639239759
  14. Daniel Lindstrom, DPT, PTPhysical Therapist1982236006
  15. Deborah Lindstrom, LEPSchool Psychologist1487161964
  16. Scott Lingen, PSY.D.Clinical Psychologist1972935328
  17. Mary Ann Linh, MS, OTR/LOccupational Therapist1518429752
  18. Jessica Linnane, N.P.Family Nurse Practitioner1053749358
  19. Peter LinsePharmacist1669915583
  20. Hansheng Liou, PHARM.D.Pharmacist1508924036
  21. Alexander Lippert, MDEmergency Medicine Physician1649358748
  22. Michael Lipsett, M.D.Public Health & General Preventive Medicine Physician1376892695
  23. Scott Lipson, MDDiagnostic Radiology Physician1932181575
  24. Richard Lira GonzalezBehavior Technician1598448813
  25. Aidan LiskerClinical Social Worker1558182642
  26. Rebecca Liskin, RN, NPFamily Nurse Practitioner1497263867
  27. Pamela Lister, LMFT #51300Marriage & Family Therapist1912369711
  28. Jonathan Little, P.A.C.Physician Assistant1396157236
  29. Galina LitvinMarriage & Family Therapist1538541214
  30. Barbara Liu, D.OFamily Medicine Physician1669811055
  31. Chunnan Liu, MDHematology & Oncology Physician1154409720
  32. Connie LiuPharmacist1013449669
  33. George Liu, M.D.Anesthesiology Physician1730142571
  34. Grace Liu, LCSWClinical Social Worker1902187651
  35. Jacqueline Liu, PHARMDOncology Pharmacist1164078903
  36. Jason Liu, M.D.Cardiovascular Disease Physician1770945909
  37. Jeff Liu, ODOptometrist1801946710
  38. Jehnan Liu, M.D. PH.D.Emergency Medicine Physician1255694238
  39. Jessica LiuBehavior Technician1912724113
  40. Jun Ting Liu, PHARMDPharmacist1851012082
  41. Michelle Liu, MDOphthalmology Physician1700802451
  42. Yu-Hsiu LiuPharmacist1285080465
  43. Jane Livingston, MA, APCCMental Health Counselor1952146094
  44. Nancy LlamasSpeech-Language Pathologist1912734096
  45. Carrie LoPediatrics Physician1942761903
  46. Irene Lo, M.D.Surgery Physician1083956213
  47. Karin Loar, MS, OTR/LOccupational Therapist1972226538
  48. Aspen LobeBehavior Technician1306521661
  49. Lauren Locke, OTR/LOccupational Therapist1336588656
  50. Mark Locker, DCChiropractor1912916768

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.