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 29 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. Sherry Elbourn, MAMental Health Counselor1124312327
  2. Efsun ElciMental Health Counselor1720937121
  3. Meighan Elder, MDInternal Medicine Physician1649307661
  4. Rebecca Eldridge, CCC-SLPSpeech-Language Pathologist1649627340
  5. Randy Eliot Ganter, M.A.Mental Health Counselor1629125182
  6. Heather Elkins, IBCLCLactation Consultant (Non-RN)1447715586
  7. Kate Ellard, LCSWClinical Social Worker1912276312
  8. Elisabeth EllenbergerMassage Therapist1336591809
  9. Susan Elling, MA CCC-SLPSpeech-Language Pathologist1295963452
  10. Debora Elliott, M.A., L.P.C.Mental Health Counselor1629103999
  11. James Elliott, PT, MSPhysical Therapist1437187275
  12. James Elliott, DPTPhysical Therapist1992474860
  13. Katherine ElliottAcupuncturist1902494388
  14. Gregory Ellis, ODOptometrist1629105622
  15. Heath EllisMental Health Counselor1659908127
  16. Jeremy EllisMental Health Counselor1003369430
  17. Mary Ellis, LACAcupuncturist1538558283
  18. Alyssa Ellsworth, DDSGeneral Practice Dentistry1508243775
  19. C Elm, PH.D.Pharmacist1447300637
  20. Ashlee Elmont, ODOptometrist1699836270
  21. Rachael Elrod-Martinez, LACAcupuncturist1841847696
  22. Mary Elsea, DCChiropractor1619066321
  23. Angela ElySocial Worker1679000798
  24. Christopher Emerson, MAMental Health Counselor1023527322
  25. Nathan EmersonMental Health Counselor1871982082
  26. Susan Emerson, PA-CAdult Medicine Physician1346631637
  27. James Emery, M.A.,L.P.C.Mental Health Counselor1457742074
  28. Kathy Emery, MA, LPCMental Health Counselor1407235302
  29. Robert EmmerAddiction (Substance Use Disorder) Counselor1871908244
  30. Kimberly EmmertMental Health Counselor1477076784
  31. Chelsea Empey, DPTOrthopedic Physical Therapist1659789121
  32. Carolyn EndeMassage Therapist1407132905
  33. Adam Engel, PT, DPTPhysical Therapist1447489729
  34. Dawn Engel, LCSWClinical Social Worker1639221716
  35. Lori Engel, PT,MSPTPhysical Therapist1962614420
  36. Rachel Engel, RM, CPMMidwife1558745992
  37. Natalie Engelbart, D.C., F.A.C.F.N,Neurology Chiropractor1194938464
  38. Nancy Engellenner, N.P.Women's Health Nurse Practitioner1346223898
  39. Jennifer EnglandMental Health Counselor1548660343
  40. Michael Engle, BSCounselor1699273169
  41. Emily Engle BailonSpeech-Language Pathologist1134991706
  42. Chris Engler, M.A., LPCCMental Health Counselor1881338119
  43. Dan EntmacherMental Health Counselor1205250008
  44. Ann EntwisleNurse's Aide1215396734
  45. Katie Enwright, RDNRegistered Dietitian1578287207
  46. Kristine EprightInternal Medicine Physician1508996364
  47. Jennifer Epstein, MA, LPC, R-DMTMental Health Counselor1801948971
  48. Kenneth Epstein, MDHospitalist Physician1093776932
  49. Scott Epstein, MA, LPCCMental Health Counselor1811738131
  50. Silvan Erb-SummersProfessional Counselor1194159152

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.