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 2 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
- Ernest Alcantara, CRNACertified Registered Nurse Anesthetist1881999126
- Allan Gene Alcasid, MDStudent in an Organized Health Care Education/Training Program1821739723
- Ramiz AlchiInternal Medicine Physician1841678448
- Franklin Alconcel, D.O.Emergency Medicine Physician1821319658
- Meriesa Aldama, LVNLicensed Vocational Nurse1447490685
- Vickie Aldridge, RADTAddiction (Substance Use Disorder) Counselor1417529421
- Elizabeth AlecxihPhysician Assistant1679294466
- Ingrid AlexanderAddiction (Substance Use Disorder) Counselor1043481633
- Ronaldo Alforja, PA-CPhysician Assistant1093068702
- Ralph AljamalBehavior Technician1962241075
- Alhamzah AljanabiPharmacist1891511465
- Rita Alkolla, DOStudent in an Organized Health Care Education/Training Program1346099728
- Brandon AllenMental Health Counselor1356783732
- Tricia AllenLicensed Vocational Nurse1114199643
- Victor Allen, CATC 051081Addiction (Substance Use Disorder) Counselor1932227618
- Josephus AlleyneIndependent Duty Corpsman1043553381
- Sonny AllredAddiction (Substance Use Disorder) Counselor1366140493
- Stephanie AlonsoBehavior Technician1689494098
- Promise Alozie, PMHNPPsychiatric/Mental Health Nurse Practitioner1902261613
- Layal Alramahi, MDStudent in an Organized Health Care Education/Training Program1366337362
- Matthew Alschuler, DOStudent in an Organized Health Care Education/Training Program1477258960
- Eric Flores AlvarezCommunity Health Worker1265124556
- Imelda Alvarez, M.S.Marriage & Family Therapist1962668061
- Kevin Alvarez, MDStudent in an Organized Health Care Education/Training Program1073315818
- Lillian AlvarezLicensed Vocational Nurse1518459528
- Marlene AlvarezAddiction (Substance Use Disorder) Counselor1194132019
- Mathew AlvarezCounselor1306561006
- Ryan Alvarez, PA-CPhysician Assistant1811616311
- Tony AlvarranAddiction (Substance Use Disorder) Counselor1215152053
- Daneen AlvesAddiction (Substance Use Disorder) Counselor1457887002
- Ray AlvezLicensed Vocational Nurse1265831275
- Angelina AmadiRegistered Nurse1649031170
- Irene AmadorBehavior Technician1104668904
- Andrea AmayaCommunity Health Worker1972430460
- Sienna Ambrose, LMFTMarriage & Family Therapist1265656292
- Minal Amin, DMDOrthodontics and Dentofacial Orthopedics Dentistry1346105624
- Samuel AmoakoPsychiatric/Mental Health Nurse Practitioner1245579879
- Caitlyn Anderson, DOEmergency Medicine Physician1275191744
- David Anderson, PH.D.Clinical Psychologist1376520130
- Ebony AndersonLicensed Vocational Nurse1316335466
- Arthur Andrada, MDFamily Medicine Physician1104529460
- Christopher Andraos, MDStudent in an Organized Health Care Education/Training Program1356135818
- Amber AndreattaEmergency Medicine Physician1750775250
- Catherine AngelesPhysical Therapist1962164970
- Tony AngeloForensic Psychologist1992997068
- Akunna AniemekaRegistered Nurse1639883291
- Bryan James Anilao, MDStudent in an Organized Health Care Education/Training Program1518710870
- Rosemary AnokyeRegistered Nurse1528838695
- Uloma Anozie, PMHNPPsychiatric/Mental Health Nurse Practitioner1508263476
- Carlo AntonioRegistered Nurse1013189638
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.