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 281 of 502.

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

The 8 largest groups in Denver

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. Maria Martinez HernandezCounselor1629714001
  2. Cathrin Martinez HerreraBehavior Technician1316655475
  3. Neva Martinez Ortega, LPCProfessional Counselor1821739608
  4. Sandra Martinez Tenreiro, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1891578373
  5. Blanca Martinez Walter, LCSWClinical Social Worker1669811741
  6. Danae Martinez-AlexanderAddiction (Substance Use Disorder) Counselor1316784689
  7. Alvaro Martinez-Camacho, MDGastroenterology Physician1881836450
  8. Denette Martinez-Guzman, MAProfessional Counselor1437435559
  9. Yoana Martinez-SalazarClinical Social Worker1255023503
  10. Laura Martinezatonina, MTMassage Therapist1376408336
  11. Juan MartinezchavezPeer Specialist1548615297
  12. Elizabeth Martinson, MASpeech-Language Pathologist1285853713
  13. Tiffani MartirBehavior Technician1134826902
  14. Claire Martone, RNRegistered Nurse1760108484
  15. Kathy Martone, ED.D.Psychologist1316972680
  16. River Martone, MA, LPCCounselor1386431443
  17. Alexa Martucci, DCChiropractor1346738366
  18. Angella Martucci, COTA/LOccupational Therapy Assistant1336962174
  19. John Martyny, CIHOther Specialist/Technologist1477600393
  20. Lauren MartysStudent in an Organized Health Care Education/Training Program1205785615
  21. Gail Martz, PSY.D.Psychologist1336580661
  22. Gary Martz, M.D.Psychiatry Physician1003879297
  23. Therese Marumoto, M.D.Psychiatry Physician1952381220
  24. Maura Marunich, RN, IBCLCLactation Consultant (Registered Nurse)1699611004
  25. Robert Marusko, DDSOral and Maxillofacial Surgery (Dentist)1689371635
  26. Grace Marx, M.D.Infectious Disease Physician1144545799
  27. Russell Marx, M.D.Psychiatry Physician1891860037
  28. Kathleen Marzluf, MDAnesthesiology Physician1033346879
  29. Carema Masaud, LPCCounseling Psychologist1962931675
  30. Sarah Mascall, MA, LPCProfessional Counselor1134268790
  31. Arit Mascarello, REGISTER NURSEMedical-Surgical Registered Nurse1912899493
  32. Carol MascarenhasMarriage & Family Therapist1619414000
  33. Nicole MasciarelliCase Manager/Care Coordinator1952848467
  34. Margherita Mascolo, MDInternal Medicine Physician1326194929
  35. Joaquina Mascuch, L.ACAcupuncturist1427453885
  36. Mariel Maseberg, MDAnatomic Pathology & Clinical Pathology Physician1316072812
  37. Ellen MasellaStudent in an Organized Health Care Education/Training Program1093051658
  38. Prisca MashattaBehavior Technician1124717939
  39. Emma Masi, NPFamily Nurse Practitioner1992586952
  40. Donald MasiasPharmacist1346523701
  41. Suzanne Masias, CRNACertified Registered Nurse Anesthetist1881083632
  42. Marilou Masiclat-BehlmaierPharmacist1811691157
  43. Smriti MaskeyBehavior Technician1598457434
  44. Elizabeth MaslowNurse Practitioner1740317791
  45. Richard Maslow, MDFamily Medicine Physician1689769408
  46. Carol Maslyn, NPPrimary Care Nurse Practitioner1427143510
  47. Emily MasonBehavior Analyst1457756892
  48. Emily Mason, FNP-CFamily Nurse Practitioner1770276461
  49. Kaitlyn MasonOccupational Therapy Assistant1235962564
  50. Katherine Mason, MSWSocial Worker1629617626

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.