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 103 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. Jillian Tosta, LPCCMental Health Counselor1740108166
  2. Melissa Toubol, CEASPhysical Therapy Assistant1538702311
  3. Betty Tovar, RN, PHNPediatric Registered Nurse1578765871
  4. Zoshia Tracey, LCSWClinical Social Worker1336489327
  5. Collin Tracy, MFA, MA, NCC, LPCCMental Health Counselor1427618610
  6. Amy Tran, DDSGeneral Practice Dentistry1285326751
  7. Helen Tran, LCSWClinical Social Worker1932738580
  8. Michael Tran, DPTPhysical Therapist1558166793
  9. James TranchidaMental Health Counselor1043469596
  10. William Trask, D.O.Anesthesiology Physician1184706608
  11. Stephanie Traver, WHNPWomen's Health Nurse Practitioner1104160589
  12. Paige TraversieMental Health Counselor1801337498
  13. Kimberley TravisSocial Worker1972021202
  14. Stephen Travis, D.D.SGeneral Practice Dentistry1417097213
  15. Laura Travisano, LPCCMental Health Counselor1962198481
  16. Elisabeth TregerMental Health Counselor1316703523
  17. Mary Treloar, N.P.Women's Health Nurse Practitioner1811970379
  18. Lauren Tremblay, MS, CF-SLPSpeech-Language Pathologist1063341626
  19. Sonia TremblayStudent in an Organized Health Care Education/Training Program1417824251
  20. Christina Treminio, LPCProfessional Counselor1720605785
  21. Erin Trendler, OTR/LOccupational Therapist1376913996
  22. Diana Trevino, R.N.Registered Nurse1962879320
  23. Jazmin TrevizoBehavior Technician1457940611
  24. Holly TrienensMental Health Counselor1285457549
  25. Sarah TriggFamily Nurse Practitioner1083583041
  26. Matthew Tripp, O.D.Optometrist1053697391
  27. Jankhana TrivediPhysical Therapist1053617779
  28. Christopher Trojanovich, M.D.Internal Medicine Physician1518087915
  29. Natalie Trombly, LICSWClinical Social Worker1477606184
  30. Deborah TroutMental Health Counselor1225162605
  31. Jill True, HISHearing Instrument Specialist1285254532
  32. Sara Truitt, LPCCMental Health Counselor1295506707
  33. Bridget TrujilloCase Manager/Care Coordinator1154475663
  34. Carlos TrujilloMental Health Counselor1003110891
  35. Holly TrujilloMental Health Counselor1033420401
  36. Nelson Trujillo, M.D.Interventional Cardiology Physician1184636045
  37. Lidia Trushnina, MAMental Health Counselor1841589322
  38. Chiung-I Tsai, LACAcupuncturist1952875650
  39. Ellen Tschida, PTPhysical Therapist1366579336
  40. Barbara Tschoepe, PT PHDPhysical Therapist1285751230
  41. Clara TsePharmacist1154617967
  42. Yukit TseProfessional Counselor1346999612
  43. Jennifer Tseng, M.D.Family Medicine Physician1184608705
  44. Julie TuCase Manager/Care Coordinator1023855996
  45. Linda Tuber, M.S.W.Clinical Social Worker1730278979
  46. Chandler TuckerMetabolic Nutrition Registered Dietitian1952127540
  47. Ellen Tucker, LCSWClinical Social Worker1124291315
  48. Kathryn TuckerSpeech-Language Pathologist1821532839
  49. Myra Tuckerman, MDFamily Medicine Physician1831184381
  50. Grace TulleyCase Manager/Care Coordinator1801677422

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.