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 29 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
- Hao Dieu, PHARMDPharmacist1508341744
- Ethan DikeBehavior Technician1063168144
- Lawrence Diller, M.D.Developmental - Behavioral Pediatrics Physician1912921180
- Martin Diller, LMFTMarriage & Family Therapist1174321087
- Cathy DillonBehavior Technician1205625357
- Tracy DillonBehavior Technician1962907154
- Vincent Dimaggio, M.D.Specialist1215959366
- Thu Dinh, RPHPharmacotherapy Pharmacist1619415981
- Steven Dinstell, MDPediatrics Physician1659459717
- Joseph Dintino, LCSWClinical Social Worker1306140744
- Jennifer Dion-Gokan, FNPNurse Practitioner1831634708
- Brigitte Anne DionisioBehavior Technician1609565621
- Catherine Dionisio, PH.D.Clinical Psychologist1730365248
- Carol Diraimondo, MDNephrology Physician1265433288
- Yalina Disla, MD, MPHEmergency Medicine Physician1225458227
- Kamilla DistefanoChore Provider1043663305
- Kurt Dittmar, MDAnesthesiology Physician1003858697
- Bea Nicole DiumanoBehavior Technician1780555078
- Rashmi Dixit, M.D.Rheumatology Physician1811990666
- Deashia DixonBehavior Technician1831761527
- Levon Djenderedjian, MDOphthalmology Physician1952756256
- Anh Do, MDObstetrics & Gynecology Physician1548362122
- Christina DoPharmacist1558893214
- Duy Do, M.D.Anesthesiology Physician1386039584
- Lan Do, FNP-CFamily Nurse Practitioner1760337216
- Chau DoanBehavior Technician1568125482
- Deborah Doberne, MDInternal Medicine Physician1184916082
- Alfred Dobrow, MDOphthalmology Physician1497833586
- Megan Dodson, PA-CPhysician Assistant1750720850
- Danielle DoedensBehavior Technician1366817710
- Janice Dolan, MSN/FNPFamily Nurse Practitioner1982680864
- Nicole Doll, HIGH SCHOOL DIPLOMABehavior Technician1518226406
- Danielle Dollinger, PSYDClinical Psychologist1427678127
- Jared DomaguingNurse Practitioner1609657741
- Maria Domantay, MDHospitalist Physician1003994195
- Katrina Domingo, PSY.D.Psychologist1023325792
- Stacey DomingoBehavior Technician1669179099
- Elizabeth Domingos-Shepard, LMFTMarriage & Family Therapist1194877852
- Crystal Dominguez, PHARM D.Pharmacist1750566527
- Elijah DominguezBehavior Technician1558205922
- Jessica DominguezAthletic Trainer1154853463
- Patricia Dominguez DominguezBehavior Technician1639807076
- Diane Domondon, RPHPharmacist1114580669
- Anne Donegan, DOPediatrics Physician1194420158
- Elizabeth Donnelly, RN, CNM, WHNPAdvanced Practice Midwife1225402332
- Claire Donovan, CNMMidwife1174403679
- Vernon DooleyMarriage & Family Therapist1366218869
- Meena Dopp, MDInternal Medicine Physician1710447925
- Veselina DoradoBehavior Technician1386457307
- Maryam Doroudian, DDSGeneral Practice Dentistry1821018722
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.