2026 data CMS NPPES NUCC Taxonomy

Doctors in Grass Valley, CA

Active healthcare providers in Grass Valley sourced from the CMS NPPES weekly file, no proprietary ratings, no editorial scores. NPI counts, specialty distribution, and primary practice addresses refreshed each release.

1,503
Providers
CMS NPPES-registered
20
Specialties
NUCC taxonomy codes
Mental Health Counselor
Top specialty
191 providers
California
State
CA

1,503 healthcare providers across 20 specialties

Grass Valley, California appears in the CMS National Plan and Provider Enumeration System with 1,503 registered healthcare providers spanning 20 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 2023 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 (191 clinicians, followed by Addiction (Substance Use Disorder) Counselor with 146 and Counselor with 128). 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 3.9 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.

Within California, Grass Valley ranks #139 of 805 cities tracked by provider count, accounting for 0.2% of the state's registered providers. 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, searching by specialty narrows the 690-taxonomy roster to clinicians with the relevant training, and each provider page links to NPI, state licensing boards, and the NPPES registry for credential verification. 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, so listing details may be out of date; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients. Nothing on this page substitutes for consulting a licensed clinician about your personal health decisions.

1,503
Providers
20
Specialties
#139
of 805 CA cities
0.2%
of CA providers
3.9
Per 100K (state)

Which specialties are most common in Grass Valley

Mental Health Counselor 191
Addiction (Substance Use Disorder) Counselor 146
Counselor 128
Marriage & Family Therapist 114
Physical Therapist 60
Community Health Worker 50
Pharmacist 39
Family Medicine Physician 37
Case Manager/Care Coordinator 32
Registered Nurse 32
Adult Companion 31
Clinical Social Worker 31
Licensed Vocational Nurse 29
Student in an Organized Health Care Education/Training Program 25
Chiropractor 25
Internal Medicine Physician 23
General Practice Dentistry 23
Dentist 21
Family Nurse Practitioner 19
Physician Assistant 19

Healthcare Providers (Page 14)

Name
Nichole Jaerger
Mental Health Counselor
Paul Jaffe, L.C.S.W.
Clinical Social Worker
Jacqueline James
Addiction (Substance Use Disorder) Registered Nurse
Carl Jefferson, C.A.S.
Mental Health Counselor
Ethan Jefferson, PA-C
Family Medicine Physician
Lavurne Jeffreys
Mental Health Counselor
Amanda Jensen
Mental Health Counselor
Eric Jensen
Addiction (Substance Use Disorder) Counselor
Faye Jensen, M.D.
Specialist
Heather Jensen
Community Health Worker
Jonathan Jensen
Registered Nurse
Michael Jensen, D.O.
Physical Medicine & Rehabilitation Physician
Kristine Jessen-Mather, NP #NPF4647
Pediatric Nurse Practitioner
Michelle Jodoin
Addiction (Substance Use Disorder) Counselor
Richard Johns
Rehabilitation Practitioner
Adam Johnson
Community Health Worker
Amy Johnson
Counselor
Briana Johnson, RADTI
Addiction (Substance Use Disorder) Counselor
Donna Johnson
Mental Health Counselor
Kaelin Johnson
Community Health Worker
Penelope Johnson
Adult Companion
Rebecca Johnson
Mental Health Counselor
Sarah Johnson
Mental Health Counselor
Tyler Johnson
Addiction (Substance Use Disorder) Counselor
Erin Johnston, PSS
Mental Health Counselor
Emily Jones
Marriage & Family Therapist
Jack Jones
Mental Health Counselor
James Jones
Periodontics
Janell Jones, PHARMD
Pharmacist
Jeffrey Jones, LAADC, LAADC CA
Addiction (Substance Use Disorder) Counselor
Rebecca Jones, RADT
Addiction (Substance Use Disorder) Counselor
Shane Jones
Addiction (Substance Use Disorder) Counselor
Hilary Jordan, CMT, MA
Specialist
Narayan Jorgensen, P.T
Physical Therapist
Julia Jory, LVN
Licensed Vocational Nurse
Juna Jovani
Pharmacist
Kimberly Juarez, BSW
Mental Health Counselor
Heather Julien Spitalier, MT, NMT
Massage Therapist
Lauren Justus
Student in an Organized Health Care Education/Training Program
Valerie Kack, LCSW, PHD
Mental Health Counselor
Gurpreet Kandola
Mental Health Counselor
Thomas Kanomata, MD
Internal Medicine Physician
Karen Kasten
Registered Nurse
Rebecca Kauk, FNP
Family Nurse Practitioner
Nathanael Kavenik, BA
Mental Health Counselor
Sande Kay, M.A.
Mental Health Counselor
Deborah Keeney, MA, MFT
Marriage & Family Therapist
Donna Keith, IMFT
Marriage & Family Therapist
Margaret Keller
Mental Health Counselor
Alan Kellermann, MD
Family Medicine Physician

Nearby Cities in California

Other California cities with provider coverage in the CMS NPPES registry.

Compare specialties side-by-side →

Frequently Asked Questions

How many doctors are in Grass Valley, CA?
There are 1,503 registered healthcare providers in Grass Valley, CA, covering 20 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, Counselor, Marriage & Family Therapist, Physical Therapist. Mental Health Counselor has the most providers with 191.

Provider data from CMS NPPES (download.cms.gov/nppes); specialty classification from NUCC Health Care Provider Taxonomy. PlainDoctor does not rate or rank providers. Methodology · About

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from CMS National Plan and Provider Enumeration System (NPPES). Consult a qualified professional before making decisions based on this data.

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-05-20.