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 39 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
- Krystal Starnes, NPFamily Nurse Practitioner1508306143
- Gregory Starsiak, DOFamily Medicine Physician1578025367
- William Steinberger, MSPT, CSCSPhysical Therapist1396853297
- Tabitha Steiner, LPCProfessional Counselor1255873667
- Melissa Stella, MDSpeech-Language Pathologist1528844792
- Samantha Stern, PA-CPhysician Assistant1508357112
- Amanda StevensClinical Social Worker1215456686
- Karen Stevens, LCSWClinical Social Worker1386778173
- Chloe Stewart, LCSWClinical Social Worker1972456234
- Kiva Stiff, PA-CMedical Physician Assistant1902856180
- Patrick Stifter, ODOptometrist1881324614
- Joan Stockton, RDHDental Hygienist1083094361
- Philip Stohlmann, LPCProfessional Counselor1154104552
- Gregory Stoll, DDS, MSOrthodontics and Dentofacial Orthopedics Dentistry1760640312
- Joseph Stone, MAMental Health Counselor1801949599
- Jaylin StotlerMental Health Counselor1245549427
- Megan StottPeer Specialist1164085981
- Erin Stotts, MA, LPCCMental Health Counselor1164882478
- Kaley StottsBehavior Technician1689136863
- Richard Stotts, MA LPCProfessional Counselor1316183932
- Nancy Stoudt, MDFamily Medicine Physician1346296126
- Yoon-Sook Stover, PAPhysician Assistant1689741456
- Lisa Straight, M.A.Mental Health Counselor1649338963
- Connie Stratton, CASAddiction (Substance Use Disorder) Counselor1821787888
- Laura Strebeck, FNP-CFamily Nurse Practitioner1174488548
- Marie Strickland, CCC-SLPSpeech-Language Pathologist1871867143
- Michael Striplin, M.D.Specialist1407927692
- Christian Strock, DPTPhysical Therapist1548992985
- Robin Sturdevant, M.A.Mental Health Counselor1558709147
- William Sturgeon, PTAPhysical Therapy Assistant1922487297
- Laura StylesOccupational Therapist1912783648
- Raul Suarez-Saldana, CAC IIIAddiction (Substance Use Disorder) Counselor1821317710
- Mathilde Sullivan, PAMedical Physician Assistant1992180442
- Megan SullivanRegistered Nurse1689594392
- Patricia Summers, M.A., MFTCMarriage & Family Therapist1891365573
- Maura Sundseth, DPTPhysical Therapist1295060689
- Haley SurilloFamily Nurse Practitioner1942145503
- Steven Sushinsky, MDFamily Medicine Physician1932548989
- Nikki Sutak, BARegistered Nurse1942586789
- Ashley SutherlandMental Health Counselor1982954384
- Camree SuttonCounselor1669892790
- Shad Sutton, D.C.Chiropractor1588713234
- Julie Sveum, RPHPharmacist1033486717
- Kristen Swadley, PHARM DPharmacist1467015792
- Jessie SwanEmergency Medicine Physician1578906715
- Stephanie Swanson, FNPFamily Nurse Practitioner1447960810
- Randal Sweat, R.PH.Pharmacist1598059370
- Ella SweeneyMental Health Counselor1679047658
- Janet SweetmanEmergency Medicine Physician1891766036
- Aunika Swenson, MDEmergency Medicine Physician1437778024
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.