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 25 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. Christine Denning, MA, LPCProfessional Counselor1477889897
  2. Taylor Denton, PT, DPTPhysical Therapist1689210619
  3. Lindsey Deol, DDSGeneral Practice Dentistry1619144615
  4. Zach DepledgeClinical Social Worker1699112664
  5. Chantal Deroos, DPTPhysical Therapist1861114852
  6. Olaf Deroos, PTPhysical Therapist1730213752
  7. Mary Derrick, PT, DPTPhysical Therapist1568894855
  8. Nicolas Desmet, LMTMassage Therapist1871998898
  9. Diana Desposito, MSW LCSWClinical Social Worker1235396813
  10. Shannon Detty, M.D.Dermatology Physician1790149763
  11. Kimberly Detwiler, MS, LAT, ATC, CSCSAthletic Trainer1265496194
  12. Lauren Deutser, MSW, LSWSocial Worker1902533029
  13. Carla Devenpeck, DPTPhysical Therapist1407258726
  14. Anne DevereuxAcupuncturist1578819538
  15. Paula Devillier, LMTMassage Therapist1053092551
  16. James Dewey, M.ED.Marriage & Family Therapist1306969803
  17. Madison Dewey, OTD, OTR/LOccupational Therapist1346896586
  18. Joshua DewittStudent in an Organized Health Care Education/Training Program1619302965
  19. Mark Dewolf, MA, LPC, NCCProfessional Counselor1356791834
  20. Avninder Dhaliwal, MDAnesthesiology Physician1982630497
  21. Kristy Dhaliwal, D.D.S.General Practice Dentistry1295902401
  22. Maria Grazia Di Giorgio, MA, LPCMental Health Counselor1922252402
  23. Victoria DialProfessional Counselor1083048326
  24. Scott DiamondAddiction (Substance Use Disorder) Counselor1871908541
  25. Gerardo DiazBehavior Technician1124994629
  26. Michael Diaz, PHARMDPharmacist1255226643
  27. Rebecca DiazMental Health Counselor1689214553
  28. Tamara Dick, PTSports Physical Therapist1073784658
  29. Kenna DickardCase Manager/Care Coordinator1477011864
  30. Katherine Dicken, LSWClinical Social Worker1245190115
  31. Amy Dickinson, L.AC.Acupuncturist1154462398
  32. Jennifer Diebel, MA, LPCProfessional Counselor1285957837
  33. Robert Diehl, PHDCounseling Psychologist1992081053
  34. Casey DiekmannPharmacist1881497113
  35. Matthew Dietz, B.A.Mental Health Counselor1639557291
  36. Anne Marie Digiacomo, LCSWClinical Social Worker1891198073
  37. Frank DilalloMental Health Counselor1386331379
  38. Gudrun Dilger, MED, MA, LPC, CACIIIAddiction (Substance Use Disorder) Counselor1194012583
  39. Emma DimetroskyBehavior Technician1851252688
  40. Sona Dimidjian, PH.D.Clinical Psychologist1619244456
  41. Carol Dineen, REGISTERED MIDWIFELay Midwife1265632285
  42. Mary DineenSpeech-Language Pathologist1417167776
  43. Jean Dinwiddie, RNRegistered Nurse1982882346
  44. Anthony DiongzonPhysical Therapy Assistant1891149167
  45. Laura Dionne, MA, CCC-SLPSpeech-Language Pathologist1851163430
  46. Clifford DirgoMental Health Counselor1104165828
  47. Zoe DislerBehavior Technician1871398099
  48. Lindsay DisneyRegistered Nurse1053797282
  49. Nancy Distler, A.P.Acupuncturist1467658765
  50. Katherine Dittmann, L.AC.Acupuncturist1093156697

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.