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 39 of 124.
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
- Zaira GasanovaPsychiatry Physician1447778816
- Gillian GashBehavior Technician1285236950
- John Gasperoni, PH.D.Clinical Psychologist1619940178
- Melissa Gastellum, N.D.Naturopath1689906711
- Dominique GastonBehavior Analyst1750628244
- Marlana GastonBehavior Technician1760328512
- Deborah GatesBehavior Technician1790476174
- Marisa GattiRegistered Nurse1518559434
- Maya GattupalliNeurology Physician1033798228
- Richard GaugerBehavior Technician1730779208
- Preeti GaurBehavior Technician1669936357
- Jean Gauvin, M.D.Psychiatry Physician1689801912
- Ivy Faith GaveroBehavior Technician1841965019
- Aruna Gavini, MDHematology & Oncology Physician1942439021
- Michael GaxiolaBehavior Technician1700605599
- Hayley Gaydos, MSSpeech-Language Pathologist1972263788
- James Gaydos, D.O.Neuromusculoskeletal Medicine & OMM Physician1790778439
- William Gazdar, D.C. C.C.S.P.,Q.M.E.Sports Physician Chiropractor1255472494
- Kevin GebkenMarriage & Family Therapist1487015269
- Melissa Geddis, LMFTMarriage & Family Therapist1831802396
- David Gee, MDCardiovascular Disease Physician1588742670
- Joey GeeBehavior Analyst1760950877
- Lance Gee, M.D.Family Medicine Physician1497731665
- Lloyd GeguientoPhysical Therapist1467102897
- Benjamin Geleris, DDSGeneral Practice Dentistry1568074839
- Jonathan Geleris, D.D.S.General Practice Dentistry1043686850
- Anna GellerFamily Nurse Practitioner1174914410
- Sofia Ysabel GeluzBehavior Technician1629823372
- Heather Gemmer, M.A., CCC-AAudiologist-Hearing Aid Fitter1932263480
- Karna Gendo, M.D.Allergy & Immunology Physician1720164536
- Ji Yeong Gendron SongFamily Nurse Practitioner1033788898
- Leah Lisa Geneza, PT, DPTPhysical Therapist1891237798
- David GeorgeGeneral Care Registered Respiratory Therapist1518422617
- Patricia Geraghty, N.P.Women's Health Nurse Practitioner1316067952
- Kseniya Gershberg, DCChiropractor1477028892
- Claudia Gerst, LMFTMarriage & Family Therapist1457385767
- Brandon Gessert, DCChiropractor1457163362
- Rachel Gessert, D.C.Chiropractor1508629627
- Aliya Gessling, M.D.Hospice and Palliative Medicine (Internal Medicine) Physician1912389149
- Victoria GeterBehavior Technician1568036549
- Hosna GhafooriBehavior Technician1750062618
- Hanan GhanemBehavior Technician1932036373
- Manjit Ghangas, FNPFamily Nurse Practitioner1164568366
- Banafsheh Ghassemi, PHARMDPharmacist1093963258
- Margo GhattasPharmacist1487120887
- Kamal Ghei, M.D.Internal Medicine Physician1366490120
- Darcie Ghigiarelli, FNPFamily Nurse Practitioner1164093753
- Julianne Ghiglieri-Cole, IBCLC, MA, CCC-SLPLactation Consultant (Non-RN)1013535525
- Mirette GhobrialPharmacist1427797950
- Nourollah Ghorbani, M.D.Specialist1508970682
The largest California cities
- Los Angeles69,537
- San Diego52,937
- San Francisco38,143
- Sacramento33,083
- San Jose20,925
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.