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 26 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. Trisha Dittrick, LPCMental Health Counselor1053606194
  2. Alice Ditullio, CO LPCProfessional Counselor1104317593
  3. Cynthia Divino, PH.D.Clinical Psychologist1700928900
  4. Alyssa DixonBehavior Technician1861179525
  5. Jeffrey Dixon, LPCCCounselor1760338610
  6. Daniel DlugoseNurse's Aide1265977987
  7. Ana Do Valle, OTROccupational Therapist1215710462
  8. Sarah DobsonHealth Educator1205361540
  9. Janis Dochterman, MA, LPCC, RYTMental Health Counselor1720596703
  10. John Dodge, DMD,MSPeriodontics1629190194
  11. William Dodson, MDFamily Medicine Physician1548277593
  12. Ethan DoeCase Management Registered Nurse1134098833
  13. Hannah DoenlenPhysical Therapist1942650338
  14. Tracy DoeringClinical Social Worker1629766787
  15. Amanda Doetsch, PA-CPhysician Assistant1972574002
  16. Dirk Dolbeare, MDOrthopaedic Surgery Physician1245448984
  17. Barbora DolejsovaMental Health Counselor1831778737
  18. Julie Dolin, MA, LPC, BC-DMTProfessional Counselor1497483036
  19. Denise Dollar, LCSWClinical Social Worker1073395513
  20. Annette Donaghy, ANNETTE DONAGHY, MAProfessional Counselor1710122643
  21. Frederick Donaghy, DDSGeneral Practice Dentistry1235283748
  22. Francis Donahue, D.O.Diagnostic Radiology Physician1053496687
  23. Patricia DonaldsonMental Health Counselor1851678379
  24. Lindsay Donath, DPTSports Physical Therapist1790199883
  25. Kathleen Donohue, MA CCC-SLPSpeech-Language Pathologist1306206859
  26. Erin Donovan, M.A., CCC-SLPSpeech-Language Pathologist1205274552
  27. Limore Dooley, RDNRegistered Dietitian1043035595
  28. Sara Dooley, DCChiropractor1639874779
  29. Jessica Dooley-Dipane, LMTMassage Therapist1447848767
  30. Faith DoppeltProfessional Counselor1720696370
  31. Todd Dorfman, MDEmergency Medicine Physician1629053616
  32. Marina Dorian, PHDPsychologist1689310716
  33. Annie Dornbush, LCSWClinical Social Worker1063606267
  34. Eric Dorninger, N.D., LACNaturopath1326161209
  35. Justene DorrMental Health Counselor1811202369
  36. Kade DorseyBehavior Technician1093424327
  37. Jennifer Dossett, R.M.Lay Midwife1134399256
  38. Veronica Dotterweich, FNPFamily Nurse Practitioner1871793448
  39. Jamie Doucet, MDInterventional Cardiology Physician1417994385
  40. Rory Dougall, LSW, ADDCSocial Worker1477335404
  41. Danielle DoughertyClinical Social Worker1235313453
  42. James Dougherty, P.A.Physician Assistant1275597643
  43. George Douglas, D.D.S.Endodontics1033117239
  44. Cynthia Douglass, MA, LPCProfessional Counselor1366883688
  45. John Douillard, D.C., PH.DChiropractor1548595200
  46. Mason Douillard, LMT, CERT. ROLFERMassage Therapist1871451906
  47. Henry Dovey, MDSpecialist1891897864
  48. Michael Dow, PSY.D., L.P.CMental Health Counselor1427151224
  49. Claire Dowdle, PSY.D.Clinical Psychologist1831644541
  50. Skye DowellPersonal Care Attendant1184210742

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.