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 74 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. Linda Neale, IBCLCLactation Consultant (Non-RN)1912271156
  2. Terrence Nedbalski, DDSOral and Maxillofacial Surgery (Dentist)1477761062
  3. Garrett Neff, D.C.Chiropractor1699111625
  4. Phinehas NegashBehavior Technician1336737451
  5. Damon NegriEmergency Medicine Physician1124193453
  6. Annalise NehringBehavior Technician1164196655
  7. Alyssa Neill, RDNRegistered Dietitian1407223290
  8. Joanne Neiman, LPCProfessional Counselor1104033752
  9. Marcia NeimanInterpreter1720883929
  10. Emily NelsenPharmacist1538044060
  11. Eric NelsonMental Health Counselor1447640271
  12. Ewell Nelson, MDNeurological Surgery Physician1881634194
  13. Lawrence Nelson, M.S.W.Clinical Social Worker1538123245
  14. Lisa NelsonMental Health Counselor1265814362
  15. Mary Nelson, PHDNutrition Education Nutritionist1023990546
  16. Natalie Nelson, AU.D.Audiologist1598242562
  17. Margaret NemireMental Health Counselor1316336183
  18. Michael NesgodaRegistered Nurse1295947737
  19. Timothy Ness, CPSMental Health Counselor1942686399
  20. Rahwa NetsanetBehavior Technician1043893514
  21. Sabrina Neu, PSYDClinical Psychologist1124390075
  22. Travis Neuhaus, PT, DPTPhysical Therapist1972169498
  23. Mary NeumannMental Health Counselor1417875154
  24. Jacqueline NeuwirthMarriage & Family Therapist1720955719
  25. Elizabeth Nevers, L.P.C., L.C.M.F.T.Professional Counselor1306919220
  26. Joanne Neville, L.AC.Acupuncturist1184682304
  27. Karen Nevins, PTPhysical Therapist1376834879
  28. Gretchen NewcombBehavior Technician1669198354
  29. Joseph Newcomb, DCChiropractor1154916021
  30. Kathleen Newell, M.T.,Massage Therapist1093941619
  31. Pamela Newman, LPCMental Health Counselor1851145163
  32. Marilyn Newsom, M.D.Neurology Physician1013991603
  33. Megan Newton, MA, LPCProfessional Counselor1316572456
  34. Virginia Newton, PSY.D.Psychologist1154538817
  35. Khanhsong NguyenMental Health Counselor1184979486
  36. Thuong NguyenBehavior Technician1407320112
  37. David Nichol, MDPsychiatry Physician1689701211
  38. Margot Nicholls, NONEBehavior Technician1669197034
  39. Brian Nichols, M.D. PH.D.Ophthalmology Physician1699727172
  40. Dena Nichols, R.N.Registered Nurse1821363565
  41. Jon Nichols, M.A. LPCProfessional Counselor1275212052
  42. Roger Nichols, M.D.Diagnostic Radiology Physician1336114891
  43. Sara Nichols, PHARMDPharmacist1679176481
  44. Dia Nicholson, MAMental Health Counselor1962066274
  45. Sarah Nicholson, LPCCMental Health Counselor1588447023
  46. Elliette NickelBehavior Technician1740164110
  47. Amber NicolettiAddiction (Substance Use Disorder) Counselor1376042051
  48. Katherine NiedergesesMental Health Counselor1205160314
  49. Danielle Niedermeier-Smith, M.S.W., L.C.S.W.Mental Health Counselor1194946327
  50. Brian Niehaus, M.D.Psychiatry Physician1043538598

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.