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 95 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
- Kaitlyn Routzen, CNM, WH-NPAdvanced Practice Midwife1629796263
- Linda Row, MDInternal Medicine Physician1730251554
- Peter Rowe, M.D.Hospitalist Physician1700831922
- Julia Rowland, FNPFamily Nurse Practitioner1154003499
- Michael Roy, O D INCOptometrist1770577892
- Chelsea Royal-HannBehavior Technician1881489177
- Pamela Roza-BohrkBehavior Technician1891433108
- Ezgi Rozenshteyn, LMFTMarriage & Family Therapist1629653191
- Blanca RuanBehavior Technician1922590025
- Susan Rubenfeld, LCSWClinical Social Worker1225872229
- Mark Rubenstein, M.D.Specialist1992876403
- Hope Rubin, PAMedical Physician Assistant1851352355
- Erika RubioBehavior Technician1295340255
- Margaret RubioPharmacist1649701202
- Patricia RubioBehavior Technician1386406106
- Reid Rubsamen, MDAnesthesiology Physician1073549499
- Carenda RudisMassage Therapist1801400478
- Susan Rudloff, M.A.Marriage & Family Therapist1093162612
- Craig Rudnick, MDPsychiatry Physician1184831661
- Kimberly RuedasBehavior Technician1215635107
- Nancy RuelasAssistant Behavior Analyst1912470634
- Maria Sabina RuffinelliBehavior Technician1326763129
- Adriana RuizBehavior Technician1164999496
- Delaney RuizBehavior Technician1821742602
- Karen RuizBehavior Technician1922714435
- Stephanie Joy RuizAssistant Behavior Analyst1295259521
- Monica Ruiz Durant, MDInternal Medicine Physician1750433587
- Edgar Dan Ruiz TiradoBehavior Technician1194618660
- Sofia Ruiz-LopezBehavior Technician1174121669
- Liane Rumsey, ODOptometrist1588680912
- Carl Runyon, D.M.D.Oral and Maxillofacial Surgery (Dentist)1215036710
- Theresa Runyon, RN NPRegistered Nurse1316948235
- Michael RupertBehavior Technician1013871516
- Sarah Rusch, M.DPediatric Emergency Medicine (Pediatrics) Physician1912261611
- Michael Ruscio, D.C.Internist Chiropractor1821369166
- Joel RushMarriage & Family Therapist1538498795
- Philip Rush, M.D.Pediatrics Physician1922023993
- Adriana Russell, M.S., MFTMarriage & Family Therapist1447268875
- Jordan RussellBehavior Technician1720721913
- Rashad RussellBehavior Technician1447911797
- Sonora Russell-GarrisBehavior Technician1780551960
- Michael Russin, MDHematology & Oncology Physician1063590156
- Kevin RustPhysical Therapist1881573194
- Wilfred RustonPersonal Care Attendant1508522194
- Victoria RuvalcabaBehavior Technician1205795606
- Raymond Ruzicano, M.D.Psychiatry Physician1811062508
- Bridget RyanBehavior Technician1396568440
- Patrick Ryan, MDDiagnostic Radiology Physician1760638118
- Margaret Ryerson, MFTMarriage & Family Therapist1235301060
- John Ryu, MDAnesthesiology Physician1497783021
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.