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 18 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
- Mary Ann Hewicker, LCSWClinical Social Worker1487726808
- Melissa Hickerson, MA, CAC IIIAddiction (Substance Use Disorder) Counselor1346584406
- Ervin Hicks, MSMental Health Counselor1114325172
- Stacy Hieb, O.D.Optometrist1740369248
- James Higham-Kessler, M.D.Gastroenterology Physician1003105636
- Douglas HillEmergency Medicine Physician1235115981
- Olivia Hill, LPCCProfessional Counselor1568260164
- Holly HillhouseMental Health Counselor1548620545
- Michele Hills, PA-C, MMSPhysician Assistant1093112112
- Rachael Hilsinger, RNRegistered Nurse1346723426
- Rebekah HinrichsCounselor1114431871
- Brian Hirsbrunner, DMDDentist1720371404
- Lindsey HirtOccupational Therapist1629859004
- Adelene HoMental Health Counselor1790821528
- Trisha HobartDental Hygienist1316265853
- Emily HobbsCounselor1871088856
- Michael HodgesProfessional Counselor1871269514
- Shari Hoeffner, COTAEnvironmental Modification Occupational Therapy Assistant1922436393
- Katalyn HoferCounselor1659779882
- Maureen HoffCounselor1154602563
- Geffory Hoffman, DDSDentist1659391522
- James Hoffman, DCChiropractor1649372285
- Lommie Hoffman, BSAddiction (Substance Use Disorder) Counselor1083146682
- Erica Hofman, PT, DPTPhysical Therapist1669017232
- Erin Hoglund, MSWSocial Worker1760626808
- Brianne Hogue, NPFamily Nurse Practitioner1538605159
- Kathleen Holen, CNPAdult Health Nurse Practitioner1780693721
- Cora HolmanOptician1780513499
- Brooke Holmes, ODOptometrist1568393262
- Kaitlyn HolsappleStudent in an Organized Health Care Education/Training Program1083162895
- Eleeshea HolstonCounselor1629437488
- Jeffrey Holt, DDSGeneral Practice Dentistry1023495157
- Shea HoltCounselor1598298572
- Gary Holtzman, ODOptometrist1063470532
- Austin Hooker, DPTOrthopedic Physical Therapist1063182210
- Joanna Hoopingarner, NPNurse Practitioner1306448477
- Julia Hooten, M.A., CCC-SLPSpeech-Language Pathologist1982528485
- Elisabeth Hoover, MSMental Health Counselor1316123920
- Pamela Horne, MDPsychiatry Physician1699812941
- Carli Horner, LCSWClinical Social Worker1518281831
- Saddiqullah HotakiInterpreter1093535197
- Mary HoulihanCounselor1013426238
- Paula HouseCounselor1306245543
- Samantha Hovel, DPTPhysical Therapist1417157439
- Lacey Howard, D.O.Obstetrics & Gynecology Physician1174966980
- Morgan Howland, M.D.Anesthesiology Physician1750471033
- Ashley Hubbard, AGPCNPNurse Practitioner1780561845
- Deborah Hubbard, PTPhysical Therapist1700875622
- Jordan Huber, M.A., LPCCMental Health Counselor1548667488
- Sarah Hudnall, RDN, CDCESRegistered Dietitian1700569746
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.