Doctors and health care providers in Thornton, CO
2,234 individual NPPES records list a practice address in Thornton, 17th of 193 Colorado cities. The largest group is mental health counselor: 244, 11% of the city's records, against 6% across Colorado. Page 25 of 45.
The 8 largest groups in Thornton
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
Thornton in Colorado
- Rank in Colorado17th of 193 cities by records
- Share of the state1.5% of Colorado's records
- Specialties present25 or more taxonomy codes
- Top three groups24.4% of all records
- Mental Health Counselor rank10th of the 10 Colorado cities with the most
Compared with Colorado as a whole, Thornton has 4.7× the state's share of interpreter records and 0.22× its share of behavior technician records.
Providers in Thornton, alphabetically
- Donald MaloyMental Health Counselor1891150249
- Laura MalsamOccupational Therapist1780462341
- Jennifer Manchester, FNPFamily Nurse Practitioner1063755304
- Susanna Mandics, MSW, LCSWClinical Social Worker1053474809
- Laura Mangers, ODOptometrist1811093164
- Heather Mangold, LPCProfessional Counselor1427478643
- Laura Mannie, LSWClinical Social Worker1700238185
- Ryan Mansholt, PACPhysician Assistant1366514127
- Julie Mares, RPHPharmacist1962364927
- Aspen Mares-ToledoAddiction (Substance Use Disorder) Counselor1801365044
- Karen Markham, PA-CPhysician Assistant1154568756
- Wade Markland, MDPsychiatry Physician1467524983
- Brenda MarquezCounselor1588154686
- Flor MarquezInterpreter1093512964
- Jamie Marquez, D.M.D.Dentist1891074431
- Jonathan Marquez, RNRegistered Nurse1265935407
- Lois Marriage, RNSSRegistered Nurse1427382878
- Mina MarscellusPharmacy Technician1588598940
- Adrienne Marsh, LCSWClinical Social Worker1134375090
- Miah MarshBehavior Technician1235962010
- Edward Marshall, PSY.D.Clinical Psychologist1982822581
- Ryan MartasinSchool Counselor1821344466
- Ann MartensSpecialist1831598564
- Brandy Martin, LPCProfessional Counselor1801143300
- China MartinOncology Registered Nurse1447125760
- Joseph Martindale, D.O.Child & Adolescent Psychiatry Physician1538262589
- Anastasia MartinezCounselor1417452814
- Audra Martinez, LMT, CMMPMassage Therapist1225588635
- Breana MartinezMental Health Counselor1255991568
- Claudia MartinezCounselor1518491612
- Hope MartinezBehavior Analyst1780224568
- Maryam MartinezAttendant Care Provider1194362418
- Rosio Martinez, CHIInterpreter1386196566
- Tamra Martinez, FNP-CFamily Nurse Practitioner1194515148
- Erin Marx, M.S., M.A., LMFTMarriage & Family Therapist1508298563
- Matthew MasciolaCounselor1063915221
- Kristin Mason, M.D.Physical Medicine & Rehabilitation Physician1164482881
- Kimberly Massetti, NPNurse Practitioner1124395777
- Melissa MassyMental Health Counselor1154629921
- Kimberly MastersonNurse Practitioner1780989343
- Hayley MathewsCounselor1720529753
- Alrina MatienzoRegistered Nurse1053900217
- Denise Mattingley, O.T.R.Occupational Therapist1205093192
- Jordan Matus, M.D.Psychosomatic Medicine Physician1114205390
- Laura Maugel, PA-CPhysician Assistant1861675092
- Joann Maule, MA,BSN, RN, CARNRegistered Nurse1275951766
- Aleisha Maunu, M.A., LMFTMental Health Counselor1932369733
- Carolyn Mauterer, D.D.S.General Practice Dentistry1558445361
- Jarod Maxson, PT, DPTPhysical Therapist1528876331
- Daniel Maxwell, PTAPhysical Medicine & Rehabilitation Physician1033636022
The largest Colorado cities
- Denver25,068
- Colorado Springs19,771
- Aurora17,400
- Fort Collins6,928
- Boulder5,635
How to read this directory
Thornton, Colorado appears in the CMS National Plan and Provider Enumeration System with 2,234 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 Thornton - 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 Thornton 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 Thornton is weighted toward Mental Health Counselor (244 clinicians, followed by Counselor with 162 and Clinical Social Worker with 139). 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 Colorado's population, Thornton reports roughly 38 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 Colorado's most common specialties, Student in an Organized Health Care Education/Training Program is the most prominent one with no provider currently listing a Thornton practice address, a coverage gap Thornton patients typically fill by traveling to a larger nearby hub.
For Thornton 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 Thornton, CO?
There are 2,234 registered healthcare providers in Thornton, CO, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Thornton?
The most common specialties in Thornton are Mental Health Counselor, Counselor, Clinical Social Worker, Professional Counselor, Speech-Language Pathologist. Mental Health Counselor has the most providers with 244.
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.