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 90 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. Sarah Rahman, M.D.Internal Medicine Physician1326068222
  2. Cynthia Rahn, MDAnesthesiology Physician1083792162
  3. Sarah Rainer, SLPSpeech-Language Pathologist1750272639
  4. Anne Rainero, R.N.Acute Care Clinical Nurse Specialist1497805568
  5. David Rainero, D.M.D.Oral and Maxillofacial Surgery (Dentist)1255430849
  6. Sahil RajBehavior Technician1750218194
  7. Divya RajagopalanBehavior Technician1538845524
  8. Sahana RajmohanBehavior Technician1386535136
  9. Ariati Rakic, PHDClinical Neuropsychologist1629262555
  10. Dina Ramaha, MSWClinical Social Worker1205994100
  11. Teresa Ramakrishnan, MFTMarriage & Family Therapist1205293073
  12. Siva RamanDiagnostic Radiology Physician1295840924
  13. Mohan Ramaswamy, MDNuclear Medicine Physician1356429427
  14. Risha Ramdall, M.D.Anatomic Pathology & Clinical Pathology Physician1841224862
  15. Bianca RamirezBehavior Technician1043994676
  16. Cesar RamirezBehavior Technician1295514040
  17. Itzel RamirezSpecialist1396424776
  18. Joaquin RamirezBehavior Technician1184455958
  19. Maria Ramirez, MDHospitalist Physician1558449652
  20. Mayra RamirezBehavior Technician1639946007
  21. Raquel RamirezAudiologist1578121729
  22. Sandy Ramirez, MDHospitalist Physician1902185218
  23. Silvia RamirezBehavior Technician1053068379
  24. Stephanie Ramirez, MSBehavior Analyst1710457817
  25. Veronica RamirezClinical Social Worker1770369266
  26. Brionna Ramirez EdwardsBehavior Technician1356278923
  27. Anthony RamosBehavior Technician1982291712
  28. Christina Ramos, MSBehavior Technician1407363179
  29. Jonnalyn Posadas RamosBehavior Technician1306668587
  30. Ybette RamosBehavior Technician1942901798
  31. Matthew RanaBehavior Technician1699373993
  32. Priyanka Ranade, DOStudent in an Organized Health Care Education/Training Program1437900362
  33. Tushar Ranchod, MDRetina Specialist (Ophthalmology) Physician1316003304
  34. Lora Rancourt, PA-CPhysician Assistant1023388519
  35. Julia RandallBehavior Technician1780497321
  36. Gurkaran Randhawa, PHARMDPharmacist1093352171
  37. Darrell Randle, MDCritical Care Medicine (Anesthesiology) Physician1285662056
  38. Melanie Randolph, MSW, LCSWClinical Social Worker1366750416
  39. Farbon RanganianMental Health Counselor1881537082
  40. Gloria Rangelova, NDNaturopath1336921204
  41. Geeta RaniBehavior Technician1437922424
  42. Jeffrey Rankin, D.M.H.Psychologist1801829536
  43. Jonathan RantisiBehavior Technician1356048532
  44. Deepak Rao, MDChild & Adolescent Psychiatry Physician1215090808
  45. Deborah Raphael, MDPsychiatry Physician1205819935
  46. Ana Rapoport, CNM, WHNPAdvanced Practice Midwife1164872453
  47. Frances Rapoport, PH.D.Psychologist1427146075
  48. Kira RappBehavior Technician1114848843
  49. Sarah Rapp, LCSWClinical Social Worker1326748369
  50. Susan Rapp, MDInternal Medicine Physician1154409225

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.