NPPES file of Aug 9, 2026

Doctors and health care providers in Denver, CO

25,068 individual NPPES records list a practice address in Denver, 1st of 193 Colorado cities. The largest group is clinical social worker: 1,836, 7% of the city's records, against 5% across Colorado. Page 282 of 502.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

The 8 largest groups in Denver

  1. Clinical Social Worker1,836
  2. Mental Health Counselor1,587
  3. Professional Counselor1,126
  4. Registered Nurse1,070
  5. Behavior Technician778
  6. Physical Therapist767
  7. Students in training730
  8. Speech-Language Pathologist716

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

Denver in Colorado

  • Rank in Colorado1st of 193 cities by records
  • Share of the state16.8% of Colorado's records
  • Specialties present25 or more taxonomy codes
  • Top three groups18.1% of all records
  • Clinical Social Worker rank1st of the 10 Colorado cities with the most

Compared with Colorado as a whole, Denver has 1.8× the state's share of psychiatry physician records and 0.39× its share of behavior technician records.

Providers in Denver, alphabetically

  1. Katie Mason, M.A., N.C.C.Mental Health Counselor1649542267
  2. Kerri Mason, MDEmergency Medicine Physician1275567711
  3. Natalie MasonPsychiatric/Mental Health Registered Nurse1316242563
  4. Rachel Mason, MDObstetrics & Gynecology Physician1346629847
  5. Robert Mason, MDPulmonary Disease Physician1073692141
  6. Romy Mason, M.D.Obstetrics & Gynecology Physician1437135712
  7. Vanston Masri, D.O.Anesthesiology Physician1205087038
  8. Lewis MassaMental Health Counselor1508354234
  9. Kimberly Massale, MA, LCPCProfessional Counselor1235493073
  10. Paige Massarelli, LACAcupuncturist1649017708
  11. Susan MasseyPediatric Occupational Therapist1477750206
  12. Jordan Mast, PA-CMedical Physician Assistant1518211051
  13. Samantha MastalerClinical Social Worker1740062082
  14. Katarzyna Mastalerz, M.D.Hospitalist Physician1861514275
  15. Scott Masters, MDPsychiatry Physician1205987401
  16. Rosalyn Masterson, CAC IIIAddiction (Substance Use Disorder) Counselor1386922888
  17. Duane Mata, D.D.S.General Practice Dentistry1720100571
  18. Eliselda Mata, LPC, CAC IIIProfessional Counselor1720324106
  19. Frank Matarazzo, PAMedical Physician Assistant1740295104
  20. Joseph Matarazzo, D.O.Family Medicine Physician1467519173
  21. Michelle Matassa, MS, PA-CPhysician Assistant1720389927
  22. Meghan Matejka, OTR/LOccupational Therapist1053836254
  23. Michael Matergia, MDFamily Medicine Physician1790124840
  24. Juni Mathai, PHARM DPharmacist1497098693
  25. Mini Mathai, PSYDClinical Psychologist1720830243
  26. Seth Mathern, M.D.Hospitalist Physician1972998110
  27. Maebelle Mathew, MDStudent in an Organized Health Care Education/Training Program1275321648
  28. Lauren Mathews, L.AC.Acupuncturist1912121419
  29. Michael Mathews, L.ACAcupuncturist1780134809
  30. Ilo MathewsonRegistered Nurse1942570866
  31. Kimberly Mathewson, PSY.D.Mental Health Counselor1245384759
  32. Robert Mathewson, PTPhysical Therapist1013057348
  33. Jessica MathiasStudent in an Organized Health Care Education/Training Program1427851054
  34. Liana Mathias, MDStudent in an Organized Health Care Education/Training Program1740982172
  35. Jody Mathie, M.D.Pediatrics Physician1508991936
  36. Jessica Mathieson, DOEmergency Medicine Physician1932311016
  37. Jittiarpa Mathis, PT, DPTPhysical Therapist1467011098
  38. Kanika Mathur, M.D.Pediatric Cardiology Physician1043578404
  39. Eileen Matiash, RNRegistered Nurse1962654053
  40. Ann Matino, LCSWClinical Social Worker1316501190
  41. Haleh Matinrad, MDStudent in an Organized Health Care Education/Training Program1023805603
  42. Semira MatiosMental Health Counselor1427449982
  43. Leah MatlinProfessional Counselor1295512549
  44. Margaret MatlockClinical Social Worker1336765304
  45. Melinda Matney, MAMental Health Counselor1932221355
  46. Zoe MatosMental Health Counselor1760266316
  47. Jeffrey Matous, MDHematology & Oncology Physician1992789036
  48. Elizabeth Matson, CSWClinical Social Worker1306589205
  49. James Matson, MA, LPC, NCCProfessional Counselor1538619937
  50. Jessica Matsushima, DPTPhysical Therapist1952266595

The largest Colorado cities

  1. Colorado Springs19,771
  2. Aurora17,400
  3. Fort Collins6,928
  4. Boulder5,635
  5. Lakewood4,944

All of Colorado →

How to read this directory

Denver, Colorado appears in the CMS National Plan and Provider Enumeration System with 25,068 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 Denver - 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 Denver 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 Denver is weighted toward Clinical Social Worker (1,836 clinicians, followed by Mental Health Counselor with 1,587 and Professional Counselor with 1,126). 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, Denver reports roughly 426.5 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.

For Denver 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 Denver, CO?

There are 25,068 registered healthcare providers in Denver, CO, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Denver?

The most common specialties in Denver are Clinical Social Worker, Mental Health Counselor, Professional Counselor, Registered Nurse, Behavior Technician. Clinical Social Worker has the most providers with 1,836.

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.