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 24 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. Cynthia Copperstein, PT, DPTPhysical Therapist1821534520
  2. Chelsea CoppockSpecialist1588149371
  3. Alexandra CorbettBehavior Technician1205343787
  4. Pilar Corcoran-Lozano, PSY.D.Psychologist1932573771
  5. Angelica Cordeiro DasilvaMassage Therapist1467145490
  6. Timothy Corfman, MDHospitalist Physician1114005204
  7. Gretta Corig, RDNRegistered Dietitian1659892875
  8. Roger Cornwall, MDAnesthesiology Physician1144266404
  9. Alejandro CoronaBehavior Technician1861961914
  10. Angela CoronaBehavior Technician1144714908
  11. Alejandro CoronelPhysical Therapy Assistant1225836646
  12. Gladys CoronelBehavior Technician1467337600
  13. Mark CorpuzBehavior Technician1225660814
  14. Kt CorrBehavior Analyst1164040937
  15. Alejandro CorralBehavior Technician1982462347
  16. Blanca CorralBehavior Technician1407540966
  17. Fatima CorralBehavior Technician1174346134
  18. Jana Corral, LMFTMarriage & Family Therapist1588735229
  19. Abraham CortesBehavior Technician1114857539
  20. Ruth Cortes Carvajal, DNP, FNP-BC, RNNurse Practitioner1649104829
  21. Estela CortezClinical Social Worker1083262489
  22. Linda Cortez, PA-CPhysician Assistant1487927414
  23. Sandy Cortez, RD CFTRegistered Dietitian1659400612
  24. Jeremy Cosmer, RCPRegistered Respiratory Therapist1508330762
  25. Abbie Cosso, DPTOrthopedic Physical Therapist1366265159
  26. Adriane Costa, PTPhysical Therapist1699070623
  27. Natalie CostalesBehavior Technician1902618390
  28. Brian Costello, PHYSICIAN ASSISTANTSurgical Physician Assistant1396833257
  29. John CotterBehavior Technician1518513159
  30. Jessica CouchPhysician Assistant1730559642
  31. Pascale Coucy, NPDoula1629134655
  32. Christopher Coufal, M.D.Orthopaedic Trauma Physician1467402859
  33. George Counelis, MDNeurological Surgery Physician1437261534
  34. James Coupe, CRNACertified Registered Nurse Anesthetist1487791299
  35. Emma CouvillionBehavior Technician1669336483
  36. Nicholas CovaiaPhysical Therapist1457237802
  37. Deborah Cox, CNMPerinatal Registered Nurse1316008998
  38. Zoe CoxBehavior Technician1043901812
  39. Errol Craig, M.D., PHDDermatology Physician1659344281
  40. Jeannie Craig, OTErgonomics Occupational Therapist1295814242
  41. Juliene CraigBehavior Technician1942777172
  42. Lisa Craig, MDInternal Medicine Physician1699853754
  43. Laurence Cram, MDHospitalist Physician1356429450
  44. Collin CrawfordPharmacist1710287040
  45. Eugene Crayton, MDPsychiatry Physician1740327923
  46. Sue CreminBehavior Technician1750265609
  47. Andria Cremolini, MFTMarriage & Family Therapist1417008780
  48. Kendra Crenshaw, LCSWClinical Social Worker1629956164
  49. Thomas Cresante, D.O.Hospitalist Physician1003058678
  50. Alice Criner, M.S.Counselor1376704932

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.