Doctors and health care providers in Colton, CA
2,459 individual NPPES records list a practice address in Colton, 93rd of 812 California cities. The largest group is registered nurse: 345, 14% of the city's records, against 1% across California. Page 36 of 50.
The 8 largest groups in Colton
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
Colton in California
- Rank in California93rd of 812 cities by records
- Share of the state0.3% of California's records
- Specialties present25 or more taxonomy codes
- Top three groups32.7% of all records
- Registered Nurse rank7th of the 10 California cities with the most
Compared with California as a whole, Colton has 13.3× the state's share of licensed psychiatric technician records and 0.23× its share of behavior technician records.
Providers in Colton, alphabetically
- Conchita Portilla, NURSE PRACTITIONER PPediatric Nurse Practitioner1649232075
- Stephanie PortilloSocial Worker1477283828
- Hannah PouBehavior Technician1255051785
- Jacqueline PowellPharmacist1578272118
- Angeli Joy PoyaoanGeneral Practice Dentistry1528752607
- Richard Preci, D.OFamily Medicine Physician1619910213
- Yvonne PrempehRegistered Nurse1205411667
- O'Neil PresuelPsychiatric/Mental Health Nurse Practitioner1184370934
- Ainsley PruittRegistered Nurse1326306192
- Brianne PruittAdult Psychiatric/Mental Health Registered Nurse1023345469
- Noah Puchalski, DOStudent in an Organized Health Care Education/Training Program1386336972
- Christine PulidoMental Health Counselor1336336247
- Jennifer Pulido-MartinPhysician Assistant1649040379
- Chelsea PullenCommunity Health Worker1215626940
- Brigitte PurnellAttendant Care Provider1407407026
- Edward PyoDentist1588823777
- Murad QaysiaPhysician Assistant1447758131
- Cindy Qiu, MDStudent in an Organized Health Care Education/Training Program1396684783
- Clarissa QuachStudent in an Organized Health Care Education/Training Program1962961243
- Truong Quach, MDFamily Medicine Physician1346358223
- Mercy QuarshieRegistered Nurse1891665907
- Cynthia QuiamcoPsychiatric/Mental Health Registered Nurse1154592871
- Filemon Quinio, MDPhysical Medicine & Rehabilitation Physician1346332715
- Gerardo QuinonesPhlebotomy Technician1669071882
- Geronimo QuinonesPsychiatric/Mental Health Registered Nurse1023289741
- Al Quintana, PA-CPhysician Assistant1740427012
- Angelica Quintana, PA-CPhysician Assistant1174831432
- Walter QuintanillaMental Health Counselor1154749463
- Josephine Quintero, APCC, AMFTMarriage & Family Therapist1073378576
- Kaley QuinteroAssistant Behavior Analyst1790537496
- Erlene Quintos-Pham, M.A.Marriage & Family Therapist1801154430
- Christa Quiroz, LCSWClinical Social Worker1467837690
- Eileen Rad, MDStudent in an Organized Health Care Education/Training Program1366375578
- Kevin Radzinskiy, PHARMACY TECHPharmacy Technician1376661736
- Theresa Rago, ACSW, PPSCClinical Social Worker1407668585
- Sophia Raheb, DOStudent in an Organized Health Care Education/Training Program1811835283
- Vikram Raj, D.O.Emergency Medicine Physician1053323923
- Anthony Rajasingham, MDInternal Medicine Physician1619400777
- Sharmila Raju, MDStudent in an Organized Health Care Education/Training Program1194579748
- Montra Rama, RDHAPDental Hygienist1669234795
- Vivek Ramakrishnan, DONeurological Surgery Physician1649505009
- Carlos Ramirez, MDGeneral Practice Physician1932341203
- Gwendolyn Ramirez, PAPhysician Assistant1235963208
- Joseph RamirezRegistered Nurse1134391584
- Joe Ramirez-Lopez, PAPhysician Assistant1457167801
- Judi Anne Ramiscal, MDSurgical Oncology Physician1326458845
- Vanessa RamosRegistered Nurse1447806419
- Clarissa Ramos Galaviz, NPNurse Practitioner1891200614
- Raymond RangelLicensed Vocational Nurse1487825105
- Rohith RaoStudent in an Organized Health Care Education/Training Program1124720446
The largest California cities
- Los Angeles69,537
- San Diego52,937
- San Francisco38,143
- Sacramento33,083
- San Jose20,925
How to read this directory
Colton, California appears in the CMS National Plan and Provider Enumeration System with 2,459 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 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. 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 Colton is weighted toward Registered Nurse (345 clinicians, followed by Student in an Organized Health Care Education/Training Program with 297 and Physician Assistant with 162). 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 6.3 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, Physical Therapist is the most prominent one with no provider currently listing a Colton practice address, a coverage gap Colton patients typically fill by traveling to a larger nearby hub.
For Colton 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 Colton, CA?
There are 2,459 registered healthcare providers in Colton, CA, covering 25 or more 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, Emergency Medicine Physician. Registered Nurse has the most providers with 345.
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.