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 64 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. Andrea Mann, M.A. CCCSpeech-Language Pathologist1013182385
  2. Jennah Mann, MDSports Medicine (Orthopaedic Surgery) Physician1063048486
  3. Samantha Mann, PSY.D.Clinical Psychologist1629510649
  4. Gary Mannheimer, O.D.Optometrist1881674224
  5. Wendy Mannis, R.PH.Pharmacist1265657696
  6. Jose Manrique Mercado, MDFamily Medicine Physician1962709246
  7. Melissa Mansika, MSHealth & Wellness Coach1659137743
  8. Ines Manteuffel, LMTMassage Therapist1326589185
  9. Holly MantychRegistered Nurse1881807089
  10. Sandra ManzoMental Health Counselor1902225899
  11. Jie Mao, M.D.Diagnostic Radiology Physician1942293485
  12. Madeline MapesBehavior Technician1720915432
  13. Joshua Marable, NCTMBMassage Therapist1255568606
  14. Kathryn March, RNMaternal Newborn Registered Nurse1881815827
  15. Louise MarchMental Health Counselor1851653919
  16. Toby Marchand, L.AC.Acupuncturist1396011433
  17. Ryan Marchman, DCChiropractor1265911994
  18. Karyn Marcinkus, MSWMental Health Counselor1538501754
  19. Gail Marcus, LCSWPsychologist1033261888
  20. Karolina MareckiMental Health Counselor1083106470
  21. Jetha Marek, MSWClinical Social Worker1154994762
  22. Rebecca Maret, L.AC.Acupuncturist1205953114
  23. Regina Marian, R.N., M.A.Counselor1073863528
  24. Alicia Marie, RNRegistered Nurse1972221950
  25. Ashley Marin, LPCMental Health Counselor1982583332
  26. Don Marinelli, PH.DClinical Psychologist1275697799
  27. Amanda Markert, LCPC, LACMental Health Counselor1386336279
  28. Natalie Markland, DPT, ATCPhysical Therapist1487172508
  29. Tracy Markle, LPCProfessional Counselor1326345216
  30. Katie MarkleyMental Health Counselor1295032530
  31. Jennifer MarkwayCounselor1154749380
  32. Chappell Marmon, MSW, LCSWClinical Social Worker1346454188
  33. Callie MaronProfessional Counselor1487374880
  34. Martin Jr Marquez Merino, PT, DPTPhysical Therapist1003605684
  35. Jennifer MarriottClinical Social Worker1578611869
  36. Brennan Mars, PSY.DPsychologist1013030923
  37. Alan Marschke, MAMental Health Counselor1669862561
  38. Lawrence Marsh, LCSWClinical Social Worker1043850332
  39. Maggie MarshMental Health Counselor1336755255
  40. Kate Marshall, PH.D.Psychologist1417000191
  41. Jen Marson ParkerSpeech-Language Pathologist1629515721
  42. Patrick Martens, DCChiropractor1255918306
  43. Kyle Marthaller, MDSurgery Physician1417243254
  44. Birchann Martin, D.C.Chiropractor1477863132
  45. Donovan Martin, DDSGeneral Practice Dentistry1609812999
  46. Hillary Martin, ND.Naturopath1811128473
  47. Jammie Martin, MA, LPCCMental Health Counselor1225612336
  48. Kathryn Martin, DPTSports Physical Therapist1750996559
  49. Nadine Martin, NURSE PRACTITIONERAdult Health Nurse Practitioner1285163774
  50. Patricia Martin, R.D.H.Dental Hygienist1821339508

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.