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 413 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. Samantha Siegel, MAMental Health Counselor1831594316
  2. Sandra Siegel, PH.D.Clinical Child & Adolescent Psychologist1851449037
  3. G. Siegrist, DDSDentist1558396150
  4. Kevin Sieja, M.D.Gastroenterology Physician1952356677
  5. Annette Siemens, FNPNurse Practitioner1477643872
  6. Leilani SiensBehavior Technician1790646826
  7. Eliana SierraHearing Instrument Specialist1801632856
  8. Margie SierraBehavior Analyst1134750391
  9. Michelle Sierra, RDHDental Hygienist1639686967
  10. Tammara Sierra, PTAPhysical Therapy Assistant1053705509
  11. Katherine SietosMassage Therapist1972942274
  12. Rebecca Sievers, CMTMassage Therapist1861457228
  13. Irena Sigel, O.D.Optometrist1366859829
  14. Barbara Sigford, MDPhysical Medicine & Rehabilitation Physician1588753735
  15. Jessica Sigler, R.N.Registered Nurse1295082055
  16. Ashley Sigmund, RDN, CSR, CLTRegistered Dietitian1205450343
  17. Gina Signoracci, PHDPsychologist1720345846
  18. Heather Signorelli, D.O.Anatomic Pathology & Clinical Pathology Physician1326363078
  19. Douglas SikesRegistered Nurse1265836548
  20. Kim Sikora, ATCAthletic Trainer1023386661
  21. Sasha SilbermanCounselor1225718398
  22. Stephanie SilbermanClinical Child & Adolescent Psychologist1285027367
  23. Karen Silbersweig, LPC CACIIMental Health Counselor1548461361
  24. Sheila Siller, CMTMassage Therapist1841459336
  25. Annalyse SillettoBehavior Technician1841150216
  26. Hilary Sillik, M.D.Anatomic Pathology & Clinical Pathology Physician1487897856
  27. Bryan Silon, M.D.Gastroenterology Physician1144541590
  28. Alexia SilvaProfessional Counselor1164254561
  29. Danielle SilvaPhysical Therapist1730865395
  30. Javier SilvaPharmacist1174291405
  31. Jordan SilvaClinical Social Worker1134630171
  32. Lissette Silva, ODOptometrist1669101556
  33. Luz SilvaStudent in an Organized Health Care Education/Training Program1457041857
  34. Marcelo Silva, OTROccupational Therapist1609025428
  35. Maria SilvaBehavior Technician1073283099
  36. Roberto Silva, MDFamily Medicine Physician1952448219
  37. Ashley Silvas, DDSStudent in an Organized Health Care Education/Training Program1558875286
  38. Renata Silveira, L.AC.Acupuncturist1639640378
  39. Andrea Silver, LCSWClinical Social Worker1194057224
  40. Michael Silver, M.D.Psychiatry Physician1659379410
  41. Rebecca SilverMental Health Counselor1730402389
  42. Sophia SilverMental Health Counselor1265105001
  43. Amy Silverberg, MDInternal Medicine Physician1801038468
  44. Bruce Silverberg, MDCardiovascular Disease Physician1033158696
  45. Jason SilverbergMental Health Counselor1194194365
  46. Neil Silverman, MDDermatology Physician1104953082
  47. Samantha SilvermanBehavior Technician1053950691
  48. Karin Silvers, LACAddiction (Substance Use Disorder) Counselor1962061176
  49. Valerie Silvers, LCSWClinical Social Worker1548598121
  50. Hope SilversteinCommunity Health Worker1710323316

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.