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 87 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. Meryl Romer, MA, CACIIIAddiction (Substance Use Disorder) Counselor1316352693
  2. Allison Romportl, DCChiropractor1194374868
  3. Christopher Roney, LCSWClinical Social Worker1891165718
  4. Megan Roney, OTR/LOccupational Therapist1487160065
  5. Anna Rooney, M.D.Family Medicine Physician1184607772
  6. Tsunemi Rooney, LPCProfessional Counselor1912214149
  7. Annsley RoozingMassage Therapist1417302654
  8. Raymond Roper, DDSDentist1558585851
  9. Anna RopersBehavior Technician1750108452
  10. Wesley RosackerMental Health Counselor1649401480
  11. Marci Roschke, ATCAthletic Trainer1104844018
  12. Breanna Roscow, M.S.Genetic Counselor (M.S.)1770990103
  13. Andrew Rose, LPCProfessional Counselor1053658930
  14. Angela RoseMental Health Counselor1679965123
  15. Erik Rose, DDSPeriodontics1306697362
  16. Kelly RoseMental Health Counselor1104044890
  17. Riese RoseMental Health Counselor1992303911
  18. Sarah Rose, MA, LPCMental Health Counselor1235678921
  19. Tanya Rose, L.AC.Acupuncturist1548408750
  20. Gary Rosen, M.D.Specialist1548354293
  21. Neil Rosen, PSY.D.Psychoanalysis Psychologist1841452760
  22. Terri Rosenbaum, M.D.Obstetrics & Gynecology Physician1558344010
  23. David Rosenthal, M.D.Psychiatry Physician1104195817
  24. Greg Rosenthal, MA, LPCMental Health Counselor1033757042
  25. Michelle Rosenthal, LPC, LACProfessional Counselor1316595051
  26. Susan Rosewell-Jackson, PH.D.Professional Counselor1851610034
  27. Mirra Roske, MSWMental Health Counselor1023439742
  28. Jasmine Roske-JonesDoula1366398133
  29. Jean Rosmarin, PHDPsychologist1023195641
  30. Martha Rosner, M.A., L.P.C.Mental Health Counselor1386777845
  31. Blake RossBehavior Technician1932604931
  32. Debora Ross, LMFTMarriage & Family Therapist1992950331
  33. Erin RossMental Health Counselor1720537608
  34. Harry Ross, MDEmergency Medicine Physician1972748309
  35. Jacquelyn RossProfessional Counselor1205590049
  36. Janae Ross, PA CPhysician Assistant1093918377
  37. Marie RossBehavior Analyst1154929156
  38. Scott Ross, BCBABehavior Analyst1891328399
  39. Shannon Ross, PAPhysician Assistant1588621445
  40. Trasa RossiniSurgical Technologist1376664383
  41. Lilli Rossman, MA, LPCProfessional Counselor1770133324
  42. Lauren Rosso, PAPhysician Assistant1699420919
  43. Lindsey Rosso McKoy, L.AC.Acupuncturist1962680496
  44. Amber Roter, LCSWClinical Social Worker1265045900
  45. Jennifer Roth, MSWOccupational Therapist1104247840
  46. Nicole Roth, DPMPodiatrist1770879413
  47. Merryl Rothaus, LPC, LMHC, ATR-BCMental Health Counselor1366214280
  48. Beanne Rothenberg, PH.D.Clinical Psychologist1760418180
  49. Deborah Rothman, MSPTPediatric Physical Therapist1457516429
  50. Monica Rotner, L.C.S.W., C.A.C. IIIMental Health Counselor1346398534

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.