NPPES file of Aug 9, 2026

Doctors and health care providers in Boulder, CO

5,635 individual NPPES records list a practice address in Boulder, 5th of 193 Colorado cities. The largest group is mental health counselor: 1,009, 18% of the city's records, against 6% across Colorado. Page 3 of 113.

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

The 8 largest groups in Boulder

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

Boulder in Colorado

  • Rank in Colorado5th of 193 cities by records
  • Share of the state3.8% of Colorado's records
  • Specialties present25 or more taxonomy codes
  • Top three groups29.4% of all records
  • Mental Health Counselor rank2nd of the 10 Colorado cities with the most

Compared with Colorado as a whole, Boulder has 3.9× the state's share of acupuncturist records and 0.47× its share of behavior technician records.

Providers in Boulder, alphabetically

  1. Kelsie AndersClinical Social Worker1699389635
  2. Ian AndersenMental Health Counselor1851685531
  3. Sara Andersen, MAMental Health Counselor1326250408
  4. David Anderson, LPCProfessional Counselor1467956615
  5. Derya Anderson, D.P.T.Physical Therapist1558807164
  6. Erika Anderson, L.AC.Acupuncturist1821421058
  7. Janet Anderson, FNPFamily Nurse Practitioner1841407491
  8. Kaitlyn AndersonMental Health Counselor1760802730
  9. Karen AndersonMental Health Counselor1063835833
  10. Kelley AndersonSpeech-Language Pathologist1316719982
  11. Kirsten Anderson, M.S.W.Clinical Social Worker1477960011
  12. Laura Anderson, MS, RD, CSSDRegistered Dietitian1194900233
  13. Lynette AndersonMental Health Counselor1215316997
  14. Maria Anderson, MDClinical Cardiac Electrophysiology Physician1881724649
  15. Melinda AndersonAudiologist1942458948
  16. Nelson AndersonMental Health Counselor1164825154
  17. Sarah AndersonMental Health Counselor1619221330
  18. Toni AndersonMental Health Counselor1548610306
  19. Brie Anderson-FeldmanMental Health Counselor1477795326
  20. Lowell Anderson-Reitz, NPAdult Health Nurse Practitioner1255374849
  21. Greg Anderton, L.AC.Acupuncturist1689813677
  22. David Andorsky, MDHematology & Oncology Physician1609061837
  23. Joseph Andrade, DOPsychiatry Physician1316696784
  24. Lynne Andrade, MA, LPCC, NCCMental Health Counselor1003287541
  25. Lauren Andre, LCSWClinical Social Worker1255636494
  26. Keith AndresenMental Health Counselor1225119720
  27. Karen Andrews, MDAllergy Physician1750365565
  28. Katie Andrews, DPTPhysical Therapist1861525743
  29. Pamela Andringa, M.S.P.T.Physical Therapist1093078438
  30. Jose Angel, MDAnesthesiology Physician1972543254
  31. Ellen Angeles, SLPSpeech-Language Pathologist1851872469
  32. Marissa AngelettiMental Health Counselor1255877676
  33. Megan AnguianoFamily Nurse Practitioner1265143036
  34. Leslie Angus, PTAPhysical Therapy Assistant1114357423
  35. Kandace AnichInternal Medicine Physician1609903640
  36. Richard Ankenbrandt, LPCCMental Health Counselor1063248722
  37. Alicia Ankenman, MA, LPC, SEP, BSPProfessional Counselor1265666440
  38. Dhiraj AnkolekarHospitalist Physician1649929464
  39. Julie Ansell, MDFamily Medicine Physician1336125103
  40. Andrew Antell, MDRadiation Oncology Physician1508840158
  41. Heather Anthony, M.A.Mental Health Counselor1205014313
  42. Kristina Anton-Schnell, MDInternal Medicine Physician1477577153
  43. Alexander AntonucciMental Health Counselor1285023093
  44. Stepheny Antrobus, LPCCProfessional Counselor1124592225
  45. Susan Aposhyan, MACounselor1891441283
  46. Merylee Appel, N.P.Women's Health Nurse Practitioner1164641247
  47. Kai AptidonBehavior Analyst1043713308
  48. Nicholas Aquino-Roithmayr, MA, LPCMental Health Counselor1033788518
  49. Kimberlee AragonPeer Specialist1760983332
  50. Elena ArandaMental Health Counselor1811254543

The largest Colorado cities

  1. Denver25,068
  2. Colorado Springs19,771
  3. Aurora17,400
  4. Fort Collins6,928
  5. Lakewood4,944

All of Colorado →

How to read this directory

Boulder, Colorado appears in the CMS National Plan and Provider Enumeration System with 5,635 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 Boulder - 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 Boulder 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 Boulder is weighted toward Mental Health Counselor (1,009 clinicians, followed by Professional Counselor with 334 and Clinical Social Worker with 316). 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, Boulder reports roughly 95.9 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 Boulder practice address, a coverage gap Boulder patients typically fill by traveling to a larger nearby hub.

For Boulder 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 Boulder, CO?

There are 5,635 registered healthcare providers in Boulder, CO, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Boulder?

The most common specialties in Boulder are Mental Health Counselor, Professional Counselor, Clinical Social Worker, Physical Therapist, Behavior Technician. Mental Health Counselor has the most providers with 1,009.

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.