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 97 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. Bryden Spevak, LSWClinical Social Worker1174242572
  2. Kr Spotts, D.O.Emergency Medicine Physician1083664486
  3. Debra Sprague, LPCProfessional Counselor1184768004
  4. Jonathan Sprague, MDInternal Medicine Physician1164748299
  5. Patric Spriggs, MA, LPCProfessional Counselor1790445187
  6. Christine Springer, LPCProfessional Counselor1437685070
  7. Dean Springstead, FNP-BCFamily Nurse Practitioner1396189650
  8. Agnieszka SpuzakNutritionist1316489396
  9. Stacy St Germain, CNTNutrition Education Nutritionist1881152643
  10. Maciej StabileStudent in an Organized Health Care Education/Training Program1053106484
  11. Lindsay StackMental Health Counselor1912146150
  12. Natasha StackhouseMental Health Counselor1124434774
  13. Margrit Staedler, LIC. AC.Acupuncturist1811157563
  14. Elizabeth Stahl, MA, LPCProfessional Counselor1851743058
  15. Mackenzie Stahl-WhitakerSocial Worker1659125292
  16. Chelsea StallanBehavior Technician1235626151
  17. Daniela StallingsDoula1356212849
  18. Allison Stamm, M.A., CCC-SLPSpeech-Language Pathologist1457568578
  19. David StanderferPhysical Therapist1720944770
  20. Dorte StanekMental Health Counselor1972936078
  21. Lily StanfieldMassage Therapist1730022104
  22. Rita StanfordAcupuncturist1225538366
  23. Christi Stanforth, LPCMental Health Counselor1245906601
  24. Kristen Stangel, PTPhysical Therapist1588942809
  25. Michael Stanger, MDPsychiatry Physician1477746675
  26. Karen Stanisich, OTRSpecialist1336353358
  27. Mariann Stanley, LPC, CAC IIIProfessional Counselor1578977153
  28. Tara Stanley, LPCCCounseling Psychologist1891358271
  29. Jennifer Stanzel, P.A.Medical Physician Assistant1386918977
  30. Julie Stapleton, M.D.Physical Medicine & Rehabilitation Physician1225193279
  31. Shanna Stapleton, LMTMassage Therapist1235763988
  32. Tracey Stassi, MHSC, RDN, LDNRegistered Dietitian1710570478
  33. Dominika Staszeczka, PSY.D.Mental Health Counselor1538306766
  34. Lauren Staton, PT, DPTPhysical Therapist1306187547
  35. Lisa StaudenmayerMental Health Counselor1255578274
  36. Gary Stec, MDInternal Medicine Physician1912979709
  37. Krista Steckman, DPTPhysical Therapist1700176112
  38. Eve Steed, MA, CCC-SLPSpeech-Language Pathologist1477325058
  39. Jennifer SteelCounselor1699658294
  40. John Steele, PH.D.Clinical Psychologist1194041251
  41. Jamie Steenport, SURGICAL ASSISTANTSurgical Assistant1982802237
  42. Mihaela Stefan, MDInternal Medicine Physician1114911088
  43. Katherine Stefanski, LSWMental Health Counselor1013238989
  44. Audrey Steffen, SLPSpeech-Language Pathologist1114512613
  45. Heather Steffen, PSYDPsychologist1457539603
  46. Steven SteinbachMental Health Counselor1376834259
  47. Tasha SteinbachMental Health Counselor1972810240
  48. John Steinbaugh, M.D.Dermatology Physician1184699159
  49. Charles Steinberg, M.D.Family Medicine Physician1841602976
  50. Lowell Steinberg, O.D.Optometrist1164566543

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.