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 38 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
- Maria SimonFamily Nurse Practitioner1932996659
- Rosanne Sinatra, MA, CCCSpeech-Language Pathologist1215715818
- Adrienne Sines, LPCProfessional Counselor1568738094
- Pavarsdeep SinghPhysical Therapist1063085900
- Bianca Sisman, PHARMACISTPharmacist1417563099
- John Slahor, RNRegistered Nurse1891149001
- Christopher Sligh, NP-CFamily Nurse Practitioner1659051100
- Jennifer Smetanick, LMT, BCTMBMassage Therapist1083153548
- Allison SmithSocial Worker1013395573
- Allyson Smith, MSSpeech-Language Pathologist1083462360
- Constance Smith, WORKING ON MY LPCMental Health Counselor1649929621
- Crystal SmithPharmacist1497200646
- David Smith, PH.D.Marriage & Family Therapist1154523280
- Dominica Smith, CAC IIAddiction (Substance Use Disorder) Counselor1538404900
- Gerald Smith, D.D.S.Dentist1548346679
- Heather Smith, PH.D.Counseling Psychologist1669742235
- Janelle SmithHome Health Aide1497336614
- Jessica Smith, MAMental Health Counselor1881723492
- Kelly Smith, MSCase Manager/Care Coordinator1588859805
- Kristal Smith, B.S.Case Manager/Care Coordinator1285183905
- Lance Smith, DDSGeneral Practice Dentistry1619046638
- Lindsay Smith, DPTPhysical Therapist1568132942
- Mark Smith, DDSDentist1578783007
- Neil Smith, PA-CPhysician Assistant1497814982
- Sharon Smith, PHARMD, MSHSAPharmacist1548874886
- Summer Smith, M.S. SLP-CFSpeech-Language Pathologist1457966632
- Tonya SmithCounselor1710474747
- Trenton Smith, LPCCMental Health Counselor1447937511
- Yadhira Smith, RNRegistered Nurse1457714255
- William Snyder, M.A.Mental Health Counselor1871876623
- Praveena Solipuram, MDHematology & Oncology Physician1750365300
- Farrah Soll, PA-CPhysician Assistant1235853219
- Melissa Sowers, OTROccupational Therapist1184268534
- Rachel Spady, PA-CMedical Physician Assistant1720481120
- Shelly Spalding, LPCProfessional Counselor1235252214
- Christine SpanglerMental Health Counselor1053509364
- Christopher Spangler, RNRegistered Nurse1043038458
- Eric Spence, OTROccupational Therapist1538731336
- Randa Spencer, FNP-CFamily Nurse Practitioner1982815494
- Rachel Spengel, LSWSocial Worker1073394888
- Dwayne Spinler, MS, LPC, LACMental Health Counselor1871173773
- Emily SpivaSpeech-Language Pathologist1619543279
- Rosemary Sprague, MSWSocial Worker1841425139
- Nadine SquirekMental Health Counselor1487064648
- Whitney StaatsPsychiatric/Mental Health Nurse Practitioner1003210253
- Cherish StackRegistered Nurse1740109727
- Kiersten Stack, DDSDentist1588596027
- Susan StaffordPsychiatric/Mental Health Registered Nurse1144688714
- Katlyn StahlFamily Nurse Practitioner1023976024
- Jennifer Stancer, LCSWClinical Social Worker1700014107
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.