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 37 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
- Angela Senethong, PHARMDPharmacist1417628819
- Rocio SepulvedaCounselor1477911162
- Sierra SernaBehavior Technician1972123131
- Britt Severson, MDFamily Medicine Physician1639433618
- Karl Shackelford, BCCCPastoral Counselor1265980981
- Susan Shada, RDHDental Hygienist1629214291
- Sydney Shaffar, OTD, OTR/LAthletic Trainer1609613496
- Harpreet Shahi, NPGeneral Practice Physician1841133840
- Ariel Shaifer, FNP-CFamily Nurse Practitioner1538628227
- Christopher Shama, CFASurgical Technologist1508981267
- Kelsey Shane, MAMental Health Counselor1023451705
- Janelle ShannonProfessional Counselor1811540560
- Irina Sharp, DMD, MSOrthodontics and Dentofacial Orthopedics Dentistry1720619497
- Chandra ShawNurse Practitioner1689221459
- Elizabeth Shawe, CMTMassage Therapist1154674570
- Jacob Shelton, DDSGeneral Practice Dentistry1366010415
- Tanya Sheppard, DPTPhysical Therapist1992946727
- Khem ShepsuteraCounselor1417349465
- David Sherman, LPCProfessional Counselor1790268084
- Ang Sherpa, MDFamily Medicine Physician1720738883
- Franklin Shih, M.D.Physical Medicine & Rehabilitation Physician1497715973
- Lindsay Shillinglaw, PA-CPhysician Assistant1326315961
- Shivani Shinde, M.D.Hospice and Palliative Medicine (Internal Medicine) Physician1689835191
- Lester Shine, RPHPharmacist1497283113
- Jo Shipshock, LSW, CASSocial Worker1720808843
- Michael Shomaker, MDNephrology Physician1932276581
- Kimberly Shore, M.A.Mental Health Counselor1316131394
- Megan Short, PHARMDPharmacist1346536091
- Richard Shouse, P.A.Physician Assistant1730204108
- Heather Showman, LCSWClinical Social Worker1629417860
- Ryon ShultsMental Health Counselor1962703215
- Meridith Shuman, LPCProfessional Counselor1407299597
- Kuang-Yen Shyu, PT, DPT, CSCS, CSPSPhysical Therapist1649614603
- Sarah Shyu, PT, DPTPhysical Therapist1417474594
- Daniele SidenerMental Health Counselor1609309970
- Jason Sienknecht, MASocial Worker1366564742
- Shannon SievertPhysical Therapy Assistant1891221396
- Gita Sikand, MDPediatrics Physician1639288202
- Benicio SilvaCase Manager/Care Coordinator1598000879
- Michelle Silva, L. ACAcupuncturist1881963684
- Scarlett Silva, LPCCMental Health Counselor1508699190
- Alma Silva-Gutierrez, NP-CPrimary Care Nurse Practitioner1750865374
- Alex SilvermanSpeech-Language Pathologist1144912569
- Hanna Silverman, CCC-SLPSpeech-Language Pathologist1124804398
- Jonathan SimkinsAdult Psychiatric/Mental Health Registered Nurse1699154146
- Rebecca Simmers, M.A.Mental Health Counselor1821141391
- Chelsea Simmons, B.S.Counselor1487013181
- Brian Simms, M.A. CCC-SLPSpeech-Language Pathologist1578543575
- Joseph Simodynes, MDDermatology Physician1770620031
- Kelsy Simon, RNRegistered Nurse1780410472
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.