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 44 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
- Sara WilkinsonPhysical Therapist1376102103
- James WillettsCounselor1679082853
- Michael WilleyPharmacist1023764966
- Andrea Williams, PA-CPhysician Assistant1639957871
- Audrey WilliamsSocial Worker1164823373
- Brenda Williams, M.S.Mental Health Counselor1073814364
- Brenda Williams, LCSWClinical Social Worker1083360994
- Crystal Williams, RDHDental Hygienist1790106599
- Darol WilliamsAddiction (Substance Use Disorder) Counselor1487169306
- Joe Williams, M.D.Pediatrics Physician1275575128
- Joshua Williams, AG-CNSAcute Care Clinical Nurse Specialist1194385732
- Lee WilliamsCounselor1225437205
- Marjorie WilliamsSpeech-Language Pathologist1124763701
- Nicole Williams, LCSWClinical Social Worker1174939201
- Sarah WilliamsSchool Social Worker1285525188
- Taresa WilliamsNurse's Aide1730652868
- Justin Willis, LMTMassage Therapist1003186446
- Emily Willmann, AGNP-CPrimary Care Nurse Practitioner1467020644
- Alexandria Wilson, PT, DPTPhysical Therapist1992660351
- Angela Wilson, LPNLicensed Practical Nurse1568764538
- Karlie WilsonBehavior Analyst1174114300
- Lisa Wilson, OTROccupational Therapist1518175629
- Marcus Wilson, BAAddiction (Substance Use Disorder) Counselor1174055750
- Regina WilsonMental Health Counselor1386037737
- Sarah WilsonCounselor1801381181
- Star Wilson, RNPsychiatric/Mental Health Registered Nurse1962535526
- Samantha Winder, ODOptometrist1376906966
- Kelley Winkle-BryanMental Health Counselor1962978015
- Mary Wintersieck, PT, DPTPhysical Therapist1437405644
- Alex Wirth, LMTMassage Therapist1427783273
- Kristina WirzOccupational Therapist1871379750
- Rudolph Woessner, DDSGeneral Practice Dentistry1124168364
- Hayley Wolach, NPFamily Nurse Practitioner1518680263
- Elizabeth Wolfe, LCSWClinical Social Worker1285871707
- Joshua WolfinsohnMental Health Counselor1669803037
- Lawrence Wolk, MDPediatrics Physician1104932649
- Margarita Wong, PAPhysician Assistant1902935547
- Monica Wong, FNPFamily Nurse Practitioner1952119000
- Robert Wong, RCCounselor1851422117
- Brittany Wood, PA-CPhysician Assistant1508254038
- Kara WoodardSpeech-Language Pathologist1730518325
- Jennifer WoodbySpeech-Language Pathologist1710305719
- Montoya WoodenDoula1962350876
- Katherine Woodley, MA, LPCMental Health Counselor1306974894
- Paul Wozniak, LPCProfessional Counselor1013379072
- Teresa Wren, LMSWSocial Worker1932357175
- Kelli WretlindMental Health Counselor1568909406
- Rebeca WrightAddiction (Substance Use Disorder) Counselor1790159655
- Lily Wu, PT, DPTPhysical Therapist1871010215
- Amy WurthCase Manager/Care Coordinator1013316991
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.