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 16 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
- Kara Grubb, D.V.M.Veterinarian1285030908
- Joshua Gruhl, MDRadiation Oncology Physician1982068086
- Aislin Guajardo, MAStudent in an Organized Health Care Education/Training Program1063200400
- Peter Guando, P.APhysician Assistant1699190215
- Carolyn Gubelin, FNPFamily Nurse Practitioner1801485594
- Persephone Guerrero, RNRegistered Nurse1285330910
- Kristina Gulbrandsen, AUDAudiologist1114442449
- Soyna Gulhati, M.D.Psychiatry Physician1376748772
- Wade Gunsallus, PHARMDPharmacist1780248583
- Andrea Gurule, B.A.Counselor1942686852
- Elizabeth Gustin, MA, NCC, LPCProfessional Counselor1801132790
- Emily Gutgsell, M.D.Family Medicine Physician1760801013
- Marissa GutierrezMental Health Counselor1831887934
- Carissa Gutsmiedl, MA, LPCProfessional Counselor1659721371
- Ginger Guzman, PHARMDPharmacist1003192337
- Anne HadawayMental Health Counselor1013285964
- Sally HaeflingCounselor1720445323
- Linda Haertling, MA, CCC-SLPSpeech-Language Pathologist1609654318
- Lee Anna Hageman, MA CACIIIAddiction (Substance Use Disorder) Counselor1083823686
- Heather Haghani, MSW LCSWClinical Social Worker1598034787
- Amanda Hagy, MA, CCC-SLPSpeech-Language Pathologist1629463377
- Janell Hahn, MSPTPhysical Therapist1912783762
- Kenneth Hahn, DOFamily Medicine Physician1922005818
- Mary HahnSocial Worker1225646656
- Susan Haley, LPC, CAC IIIMental Health Counselor1538227160
- Christine Hall, LPC, COTA/LProfessional Counselor1316103096
- Katilyn HallRegistered Nurse1851178784
- Johanna Hamilton, CRNPAdult Health Nurse Practitioner1063955540
- Mary Hamilton, OTROccupational Therapist1649269549
- Cambria HammanBehavior Technician1477368330
- Jayda Hammermeister, LCSWClinical Social Worker1588513774
- Kaira Hammond, OTR/LOccupational Therapist1225929326
- Kaitlin Hamor, RNRegistered Nurse1417318080
- Jillian Hamrick, B.S.Addiction (Substance Use Disorder) Counselor1730611393
- Danielle Hamstra, FNPPrimary Care Nurse Practitioner1780106237
- Maria Hamulic, LMFTMarriage & Family Therapist1104584010
- Kody HanavanMental Health Counselor1063873628
- Alison HansenStudent in an Organized Health Care Education/Training Program1013346360
- Anne Hansen, MDFamily Medicine Physician1669677472
- Diane Hansen, L.P.C.Professional Counselor1487218699
- Leeanne Harden, DMDDentist1427671312
- Angela Harding, LCSWClinical Social Worker1508200262
- Tracy Hardister, PSY.DClinical Child & Adolescent Psychologist1710035191
- Kriste Hardt, PA-CMedical Physician Assistant1427200914
- Amanda Hardy, M.A., CCC-SLPSpeech-Language Pathologist1619852191
- Amie Hare, LPC-CMental Health Counselor1538580485
- David Harger, DMDGeneral Practice Dentistry1700261369
- David Harlan, L. AC.Acupuncturist1730028424
- Leigh HarlanMental Health Counselor1013479724
- Amy Harmon, LCSWClinical Social Worker1003284837
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.