2026 data CMS NPPES NUCC Taxonomy

Doctors in Napa, CA

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

3,475
Providers
CMS NPPES-registered
20
Specialties
NUCC taxonomy codes
Behavior Technician
Top specialty
911 providers
California
State
CA

3,475 healthcare providers across 20 specialties

Napa, California appears in the CMS National Plan and Provider Enumeration System with 3,475 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 Napa - 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 Napa 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 Napa is weighted toward Behavior Technician (911 clinicians, followed by Marriage & Family Therapist with 163 and Mental Health Counselor 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, Napa reports roughly 8.9 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, Napa ranks #60 of 805 cities tracked by provider count, accounting for 0.4% of the state's registered providers. Of California's most common specialties, Behavior Analyst is the most prominent one with no provider currently listing a Napa practice address, a coverage gap Napa patients typically fill by traveling to a larger nearby hub.

For Napa 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.

3,475
Providers
20
Specialties
#60
of 805 CA cities
0.4%
of CA providers
8.9
Per 100K (state)

Which specialties are most common in Napa

Behavior Technician 911
Marriage & Family Therapist 163
Mental Health Counselor 136
Clinical Social Worker 134
Case Manager/Care Coordinator 128
Clinical Psychologist 110
Registered Nurse 106
Addiction (Substance Use Disorder) Counselor 99
Psychiatry Physician 89
Community Health Worker 86
Licensed Vocational Nurse 74
Physical Therapist 67
Student in an Organized Health Care Education/Training Program 64
Pharmacist 62
Internal Medicine Physician 59
Family Medicine Physician 58
General Practice Dentistry 51
Counselor 51
Psychologist 49
Rehabilitation Practitioner 43

Healthcare Providers (Page 16)

Name
Patricia Decker, M.D.
Anesthesiology Physician
Janella Dee
Behavior Technician
Beth-Marie Deenihan, RN, PHN
Case Management Registered Nurse
Dennis Deguzman
Rehabilitation Practitioner
Ana-Carolina Deharo
Behavior Technician
Cynthia Del Buono, PHARMD, BCOP, APH
Oncology Pharmacist
Michelle Del Rosario, PA-C
Physician Assistant
Alejandra Delagua
Counselor
Sherri Delashmit
Behavior Technician
Natalie Deleuze, M.P.T.
Physical Therapist
Alexandrea Delgadillo
Behavior Technician
Francia Delgado
Rehabilitation Counselor
Natalia Delgado, RN
Registered Nurse
Megan Della Selva, M.D.
Psychiatry Physician
Patricia Delmage, PT
Physical Therapist
Richard Delmonico, PHD
Clinical Neuropsychologist
Marci Denike
Mental Health Counselor
Marie Dennett
Case Manager/Care Coordinator
Gabrielle Dent
Community Health Worker
Jenifher Deras
Behavior Technician
Meron Derese
Case Manager/Care Coordinator
John Dermody, M.D.
Family Medicine Physician
Patrick Dermody, MD
Student in an Organized Health Care Education/Training Program
Andre Dervi, DDS
General Practice Dentistry
Nirali Desai
Pharmacist
Mia Desoto
Student in an Organized Health Care Education/Training Program
Ryann Desousa
Behavior Technician
Paul Deus, RNFA
Registered Nurse
Diana Devera, D.O.
Internal Medicine Physician
Donald Devincenzi, DDS
General Practice Dentistry
Miranda Dewitte, PSYD
Clinical Psychologist
Lena Dhillon, MD
Psychiatry Physician
Katrina Di Pasqua, DPM
Podiatrist
Ashley Diamond, RN, PHN
Community Health Registered Nurse
John Diana, M.D.
Adult Reconstructive Orthopaedic Surgery Physician
Jessica Diaz
Behavior Technician
Valeria Diaz
Behavior Technician
Victoria Diaz
Health & Wellness Coach
Izabella Diaz - Pizano
Behavior Technician
Alba Diaz Canela
Behavior Technician
Jane Dickel, LCSW
Clinical Social Worker
Kristy Dicus
Registered Nurse
Brenda Dieguez Carrillo
Registered Nurse
Colter Diehl, MFTI
Marriage & Family Therapist
Rebecca Diel, BS, IBCLC
Lactation Consultant (Non-RN)
Adrienne Difabio, PHD
Psychologist
Whitney Dill
Behavior Technician
Boriana Dimonte
Behavior Technician
Zacarah Dinkins
Behavior Technician
Stanley Dittman, D.D.S.
Dentist

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 Napa, CA?
There are 3,475 registered healthcare providers in Napa, CA, covering 20 specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Napa?
The most common specialties in Napa are Behavior Technician, Marriage & Family Therapist, Mental Health Counselor, Clinical Social Worker, Case Manager/Care Coordinator. Behavior Technician has the most providers with 911.

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.