Doctors and health care providers in Grass Valley, CA
1,540 individual NPPES records list a practice address in Grass Valley, 142nd of 812 California cities. The largest group is mental health counselor: 151, 10% of the city's records, against 3% across California. Page 31 of 31.
The 8 largest groups in Grass Valley
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
Grass Valley in California
- Rank in California142nd of 812 cities by records
- Share of the state0.2% of California's records
- Specialties present25 or more taxonomy codes
- Top three groups28.2% of all records
Compared with California as a whole, Grass Valley has 15.1× the state's share of adult companion records and 0.31× its share of student in an organized health care education/training program records.
Providers in Grass Valley, alphabetically
- Alexis WolfsonRehabilitation Practitioner1558828665
- Madisen WolleckRehabilitation Practitioner1619633542
- Alan Wong, M.D.Urology Physician1740237163
- Darlene WooMarriage & Family Therapist1386253821
- Kai WooCounselor1881292886
- Alisa Wood, LCSWClinical Social Worker1447476288
- Kelsey WoodCounselor1336501949
- Keri WoodPeer Specialist1962109975
- Scott WoodAddiction (Substance Use Disorder) Counselor1588008783
- Kevin Woodburn, O.D.Optometrist1912953217
- Ian WoodgriftCounselor1194205278
- Robert Woodhall, D.C.Chiropractor1417266917
- Kathryn WoodruffMental Health Counselor1053911826
- Nathaniel Woodruff, M.D., PHD, FACCCardiovascular Disease Physician1275623191
- Annalise Woods MagallanesCounselor1760034938
- Brenda Woodward, RADTAddiction (Substance Use Disorder) Counselor1184255150
- Cory Woody, CATCAddiction (Substance Use Disorder) Counselor1518486554
- Judith WrightSpecialist1841218260
- Philip Wright, CMTMassage Therapist1861762692
- Kaitlin Wylie, LVNLicensed Vocational Nurse1710869136
- Pa Soua Xiong, M.D.Family Medicine Physician1386015220
- Peter Yaholkovsky, MDInternal Medicine Physician1306489604
- Camille YahrmarktMassage Therapist1477228179
- Eric Yang, PHARMDPharmacist1871064378
- Zong YangCounselor1487263463
- Danielle Yantis, M.S., R.D.Registered Dietitian1417383738
- Lisa YocumSchool Psychologist1770340580
- Jeremy Young, DDS MMSCDentist1942286885
- Robin Young, SUDCC IIAddiction (Substance Use Disorder) Counselor1245909217
- Rachelle YoungmanStudent in an Organized Health Care Education/Training Program1992544118
- Queene Carla ZaportezaClinical Social Worker1689226904
- Matthew Zavala, BA PSY, MA LMFTMarriage & Family Therapist1821311077
- Claudia ZdremtanRegistered Nurse1063761880
- Madeline Zea, PAPhysician Assistant1962166330
- Matthew Zealear, M.D.Ophthalmology Physician1366516981
- Nancy ZeislerSchool Counselor1215897004
- Laura Zieman, R.N.Registered Nurse1699048470
- Thomas Zimmerman, M.D.Emergency Medicine Physician1295734127
- Ingo Zirpins, M.S.P.T.Physical Therapist1023454923
- Stacy Zolldan, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1073936019
The largest California cities
- Los Angeles69,537
- San Diego52,937
- San Francisco38,143
- Sacramento33,083
- San Jose20,925
How to read this directory
Grass Valley, California appears in the CMS National Plan and Provider Enumeration System with 1,540 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 Grass Valley - 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 Grass Valley 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 Grass Valley is weighted toward Mental Health Counselor (151 clinicians, followed by Addiction (Substance Use Disorder) Counselor with 148 and Marriage & Family Therapist with 136). 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, Grass Valley reports roughly 4 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, Behavior Technician is the most prominent one with no provider currently listing a Grass Valley practice address, a coverage gap Grass Valley patients typically fill by traveling to a larger nearby hub.
For Grass Valley 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 Grass Valley, CA?
There are 1,540 registered healthcare providers in Grass Valley, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Grass Valley?
The most common specialties in Grass Valley are Mental Health Counselor, Addiction (Substance Use Disorder) Counselor, Marriage & Family Therapist, Counselor, Physical Therapist. Mental Health Counselor has the most providers with 151.
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.