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 43 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
- Cynthia Greif-Neill, LMFTMarriage & Family Therapist1497794853
- Kimberly Grelli, MDNeonatal-Perinatal Medicine Physician1255758512
- Raveen GrewalBehavior Technician1447931548
- Kathryn Grice, MDAnatomic Pathology Physician1063586378
- Brittany Griffin, M.A.Behavior Analyst1063713642
- Alexis Griffith, DCChiropractor1184333981
- Sean Griffiths, D.O.Orthopaedic Surgery Physician1457705667
- Laura GrigsbyBehavior Technician1699452466
- Kate Grillo, CCC-SLPSpeech-Language Pathologist1851769210
- Alejandra GrimaldoMarriage & Family Therapist1467094862
- Nicole GrimesBehavior Analyst1538654074
- Kristin GrimmBehavior Technician1629966304
- Jazmin GrisbyBehavior Technician1760054654
- Zoe GronertBehavior Technician1558232876
- Lora Groppetti, MS, MFTMarriage & Family Therapist1972632750
- Clemens Grosskinsky, PHD, MDReproductive Endocrinology Physician1235128315
- Matthew GrossmanBehavior Technician1114328754
- Katrina Groves-Rehwaldt, MDAddiction Medicine (Family Medicine) Physician1487748943
- Ashley Gruendl, P.T.Physical Therapist1588062442
- Anne Grzegorczyk, M.D.Pulmonary Disease Physician1720434004
- Katty GuardadoBehavior Technician1780441584
- Prathibha Gubbi Ravishankar, MDHospitalist Physician1528146693
- Caroline Gudorf, M.S.Student in an Organized Health Care Education/Training Program1295926335
- Jennifer Guerra, MAHealth & Wellness Coach1538029889
- Ofelia GuerraBehavior Technician1215414784
- Ricardo Guerra, M.D.Dermatology Physician1558867036
- Leticia GuerreroOccupational Therapist1205092749
- Rosario GuerreroBehavior Technician1669171559
- Marisol Guerrero-ChanBehavior Technician1336845098
- Joley Guevara, M.P.TPhysical Therapist1003057233
- Salvador Guevara, M.D.Surgery Physician1336427939
- Dawn Gugliellmino, LMFTMarriage & Family Therapist1376882423
- Anne Rachel Guijo, N.P.Family Nurse Practitioner1659898484
- Kourtney GuildBehavior Technician1437087806
- Tarannum Guller, MDInternal Medicine Physician1972532083
- Siena GunariBehavior Technician1730778168
- Xi GuoBehavior Technician1215412994
- Anurag Gupta, M.D.Clinical Cardiac Electrophysiology Physician1255520623
- Ravinder Gupta, MDHospitalist Physician1649358714
- Marie Guptill, LACAcupuncturist1447707922
- Noelle Gurnari, DMDGeneral Practice Dentistry1639912694
- Sophia GurskyBehavior Technician1366396210
- Shanthi GuruswamyBehavior Technician1245996438
- Joel Guss, MDOtolaryngology/Facial Plastic Surgery Physician1962568881
- Reyvie GutfeldBehavior Technician1245001924
- Alejandro GutierrezBehavior Technician1558918581
- Amy GutierrezBehavior Technician1962368159
- Cassandra Gutierrez, BA FINE ARTSBehavior Analyst1275877011
- Connie Gutierrez, P.T.Physical Therapist1457412793
- Francisco GutierrezOrthotic Fitter1962699215
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.