NPPES file of Aug 9, 2026

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.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

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

  1. Donald MaloyMental Health Counselor1891150249
  2. Laura MalsamOccupational Therapist1780462341
  3. Jennifer Manchester, FNPFamily Nurse Practitioner1063755304
  4. Susanna Mandics, MSW, LCSWClinical Social Worker1053474809
  5. Laura Mangers, ODOptometrist1811093164
  6. Heather Mangold, LPCProfessional Counselor1427478643
  7. Laura Mannie, LSWClinical Social Worker1700238185
  8. Ryan Mansholt, PACPhysician Assistant1366514127
  9. Julie Mares, RPHPharmacist1962364927
  10. Aspen Mares-ToledoAddiction (Substance Use Disorder) Counselor1801365044
  11. Karen Markham, PA-CPhysician Assistant1154568756
  12. Wade Markland, MDPsychiatry Physician1467524983
  13. Brenda MarquezCounselor1588154686
  14. Flor MarquezInterpreter1093512964
  15. Jamie Marquez, D.M.D.Dentist1891074431
  16. Jonathan Marquez, RNRegistered Nurse1265935407
  17. Lois Marriage, RNSSRegistered Nurse1427382878
  18. Mina MarscellusPharmacy Technician1588598940
  19. Adrienne Marsh, LCSWClinical Social Worker1134375090
  20. Miah MarshBehavior Technician1235962010
  21. Edward Marshall, PSY.D.Clinical Psychologist1982822581
  22. Ryan MartasinSchool Counselor1821344466
  23. Ann MartensSpecialist1831598564
  24. Brandy Martin, LPCProfessional Counselor1801143300
  25. China MartinOncology Registered Nurse1447125760
  26. Joseph Martindale, D.O.Child & Adolescent Psychiatry Physician1538262589
  27. Anastasia MartinezCounselor1417452814
  28. Audra Martinez, LMT, CMMPMassage Therapist1225588635
  29. Breana MartinezMental Health Counselor1255991568
  30. Claudia MartinezCounselor1518491612
  31. Hope MartinezBehavior Analyst1780224568
  32. Maryam MartinezAttendant Care Provider1194362418
  33. Rosio Martinez, CHIInterpreter1386196566
  34. Tamra Martinez, FNP-CFamily Nurse Practitioner1194515148
  35. Erin Marx, M.S., M.A., LMFTMarriage & Family Therapist1508298563
  36. Matthew MasciolaCounselor1063915221
  37. Kristin Mason, M.D.Physical Medicine & Rehabilitation Physician1164482881
  38. Kimberly Massetti, NPNurse Practitioner1124395777
  39. Melissa MassyMental Health Counselor1154629921
  40. Kimberly MastersonNurse Practitioner1780989343
  41. Hayley MathewsCounselor1720529753
  42. Alrina MatienzoRegistered Nurse1053900217
  43. Denise Mattingley, O.T.R.Occupational Therapist1205093192
  44. Jordan Matus, M.D.Psychosomatic Medicine Physician1114205390
  45. Laura Maugel, PA-CPhysician Assistant1861675092
  46. Joann Maule, MA,BSN, RN, CARNRegistered Nurse1275951766
  47. Aleisha Maunu, M.A., LMFTMental Health Counselor1932369733
  48. Carolyn Mauterer, D.D.S.General Practice Dentistry1558445361
  49. Jarod Maxson, PT, DPTPhysical Therapist1528876331
  50. Daniel Maxwell, PTAPhysical Medicine & Rehabilitation Physician1033636022

The largest Colorado cities

  1. Denver25,068
  2. Colorado Springs19,771
  3. Aurora17,400
  4. Fort Collins6,928
  5. Boulder5,635

All of Colorado →

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.