2026 data CMS NPPES NUCC Taxonomy

Doctors in Colton, CA

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

2,380
Providers
CMS NPPES-registered
20
Specialties
NUCC taxonomy codes
Registered Nurse
Top specialty
359 providers
California
State
CA

2,380 healthcare providers across 20 specialties

Colton, California appears in the CMS National Plan and Provider Enumeration System with 2,380 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 Colton — 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 Colton practice location on file.

The provider mix in Colton is weighted toward Registered Nurse (359 clinicians, followed by Student in an Organized Health Care Education/Training Program with 328 and Physician Assistant with 149). 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, Colton reports roughly 6.1 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.

For Colton 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 NPPES data is self-reported and refreshed monthly, so listing details may be out of date; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients.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.

2,380
Providers
20
Specialties
6.1
Per 100K (state)

Which specialties are most common in Colton

Registered Nurse 359
Student in an Organized Health Care Education/Training Program 328
Physician Assistant 149
Addiction (Substance Use Disorder) Counselor 115
Behavior Technician 102
Licensed Vocational Nurse 86
Mental Health Counselor 83
Licensed Psychiatric Technician 79
Emergency Medicine Physician 77
Family Medicine Physician 69
Marriage & Family Therapist 64
Pharmacist 59
Internal Medicine Physician 55
Clinical Social Worker 45
Certified Registered Nurse Anesthetist 38
Counselor 36
Psychiatric/Mental Health Registered Nurse 35
Psychiatry Physician 33
Case Manager/Care Coordinator 33
Family Nurse Practitioner 29

Healthcare Providers (Page 11)

Name
SAMUEL DECKER, MD
Student in an Organized Health Care Education/Training Program
ANTONIO DEL RIO
Registered Nurse
MARY DELAHANTY
Registered Nurse
DAVID DELAP
Registered Nurse
MIRIAM DELORIA
Psychiatric/Mental Health Registered Nurse
GEENA ANDREA DEMETILLO
Pediatric Nurse Practitioner
DAVID DEMIAN
Psychiatry Physician
DONALD DENNIS, MD
Internal Medicine Physician
JENNY DESANTO
Registered Nurse
BRANDI DEUEL
Registered Nurse
JORDAN DEVERA, MD
Psychiatry Physician
DANIEL DEZEERY, MD
Student in an Organized Health Care Education/Training Program
ANEEL DHALIWAL, MD
Student in an Organized Health Care Education/Training Program
JEFFREY DHARMAWAN, DDS
General Practice Dentistry
DEV DHILLON
Emergency Medicine Physician
KRISTINA DHILLON
Internal Medicine Physician
POONAM DHIMAN
Pharmacist
JAYSHREE DHRUVA, RPH
Pharmacist
MATTHEW DIAZ, D.O.
Family Medicine Physician
VIANEY DIAZ, BA
Case Manager/Care Coordinator
DONALD DICKINSON, DDS, MD
Oral & Maxillofacial Surgery (D.M.D.)
MICHAEL DIFRONZO
Physician Assistant
JESSICA DIMIAN
Student in an Organized Health Care Education/Training Program
XIAOMENG DING, AMFT
Mental Health Counselor
HUONG DINH
Pharmacist
FRANCES DIZON
Registered Nurse
JACQUELINE DIZON
Licensed Psychiatric Technician
ALAN DOAN, PHARM.D.
Pharmacist
CAROLYN DOHERTY, MD
Family Medicine Physician
EMMALINE DOHRN
Attendant Care Provider
GLORIA DOMINGUEZ
Psychiatric/Mental Health Registered Nurse
THOMAS DONALDSON, MD
Adult Reconstructive Orthopaedic Surgery Physician
EMELIA DONKORH
Registered Nurse
ALISA DONSON
Registered Nurse
SEVE DORSEY
Addiction (Substance Use Disorder) Counselor
ALEANA DOWELL
Addiction (Substance Use Disorder) Counselor
AALIYAH DREIGHTON
Behavior Technician
SARAH DRINKWINE, APCC
Mental Health Counselor
DAVID DRUM
Student in an Organized Health Care Education/Training Program
DANIEL DUBROW, PA-C
Physician Assistant
DENISE DUGAN
Professional Counselor
SARAH DUGAN
Peer Specialist
DAVID DUGGAN, D.D.S., PH.D.
General Practice Dentistry
MICHAEL DULAY, PA-C
Student in an Organized Health Care Education/Training Program
PETER DUMAS
Physician Assistant
TREVOR DUNBAR
Internal Medicine Physician
FELICIA DUNN
Licensed Psychiatric Technician
CALVIN DUONG, M.D.
Internal Medicine Physician
CHI DUONG, PHARMACY INTERN
Student in an Organized Health Care Education/Training Program
ASHLEY DUQUE, PA-C
Physician Assistant

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 Colton, CA?
There are 2,380 registered healthcare providers in Colton, CA, covering 20 specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Colton?
The most common specialties in Colton are Registered Nurse, Student in an Organized Health Care Education/Training Program, Physician Assistant, Addiction (Substance Use Disorder) Counselor, Behavior Technician. Registered Nurse has the most providers with 359.

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.