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 59 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. Susan LeeMental Health Counselor1154711034
  2. Yoona Lee, DDSGeneral Practice Dentistry1720557556
  3. Youngok LeeMental Health Counselor1285983478
  4. Lynn Leech, PTPhysical Therapist1073668489
  5. Florence Leedy, PHARMDPharmacist1790801389
  6. Paige LeedyMental Health Counselor1023530995
  7. Lucinda Lees, RNGerontology Registered Nurse1639028632
  8. Gretchen LeezerMental Health Counselor1881220440
  9. Elizabeth LefebreFamily Nurse Practitioner1376994822
  10. Michael Lefevre, MA, LPCMental Health Counselor1639417678
  11. Jeanne Lefils, LCSWMental Health Counselor1386920775
  12. Alicia Lefkowitz, MSEDSpecialist1316650591
  13. Abigail LegardaCase Manager/Care Coordinator1477247823
  14. Grace Leger, LMTMassage Therapist1497491484
  15. Erica LegrandMental Health Counselor1841447307
  16. Brian Lehigh, DDSPeriodontics1215413356
  17. Heather Lehman, NCTMBSpecialist1831358746
  18. Holly Lehmann, RNEmergency Registered Nurse1013376631
  19. Michael LehnerzPediatric Occupational Therapist1639659451
  20. Mark Leifeste, M.D.Specialist1033156427
  21. Dylan LeighMental Health Counselor1871359497
  22. Cara Leisher, LPNLicensed Practical Nurse1659607240
  23. Jonathan Lejeune, APRNFamily Nurse Practitioner1770157265
  24. Jonathan Lejeune, RNCase Management Registered Nurse1023987724
  25. Robert Leland, MDOrthopaedic Surgery Physician1447296025
  26. Veronica Lemberger, MA, LPCProfessional Counselor1598168908
  27. Elizabeth Lemon, PHDClinical Psychologist1043939788
  28. Valerie Lemon, LPC, MAProfessional Counselor1902973431
  29. Anna Lennon, LPCCMental Health Counselor1134958630
  30. Tiffanee LenoxClinical Social Worker1609106780
  31. Misty LeonBehavior Technician1427678168
  32. David Leonard, PMHNPPsychiatric/Mental Health Nurse Practitioner1215661137
  33. Jennifer Leonesio, MSOccupational Therapist1073386850
  34. Daniel Leopold, PHDClinical Psychologist1538005228
  35. Maxime Lepage, DPTPhysical Therapist1891305785
  36. Kate LepryRegistered Dietitian1780462192
  37. Joey LernerChild & Adolescent Psychiatry Physician1083793921
  38. Kimberly LernerEndocrinology, Diabetes & Metabolism Physician1225254782
  39. Kathleen LeroyProfessional Counselor1134586449
  40. Mitchell Leroy, PHARMDPharmacist1932087004
  41. Katherine Leslie, LCSWClinical Social Worker1326310145
  42. Wendy LessmanPsychiatric/Mental Health Registered Nurse1841512415
  43. Ashley LesterCounselor1265833271
  44. Tamara Lester, RNWomen's Health Nurse Practitioner1134326382
  45. Matthew Leto, DCChiropractor1306293493
  46. Sydney Leto, LPCMental Health Counselor1336060789
  47. Catherine Lettow, CATHERINE LETTOWRegistered Nurse1568783207
  48. Norell Leung, B.A.Mental Health Counselor1023295342
  49. Lyndsay Lev, CNMMidwife1548090772
  50. Jill Leversee, MAMental Health Counselor1073999793

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.