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 96 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. Marsha Snider, LCSWClinical Social Worker1669500583
  2. Betrina Snively, FNPFamily Nurse Practitioner1164192852
  3. Ashley Snook-Downs, ND, RDNaturopath1538436100
  4. Howard Snooks, LCSWClinical Social Worker1407911563
  5. Caitlin SnowMassage Therapist1265933535
  6. Kathleen Snow, MFTCMarriage & Family Therapist1043044720
  7. Lori Snow, PT, MS, OCSPhysical Therapist1043262728
  8. Tara Snow, MDHospice and Palliative Medicine (Internal Medicine) Physician1609985233
  9. Janet Snyder, P.T.Physical Therapist1700025731
  10. Lydia SnyderRegistered Dietitian1639010481
  11. Marilee Snyder, LCSW, DCSWClinical Social Worker1841320454
  12. Tracey Sobel, DIPL.O.M., L.AC.Acupuncturist1114184835
  13. Rachel SoderbergMental Health Counselor1396296679
  14. Paul Solari, LPCProfessional Counselor1487921961
  15. Alexsandra SolheimInterpreter1548086168
  16. Lisa SolheimMental Health Counselor1750427670
  17. Valerie Solheim, PHD/DDMental Health Counselor1659620151
  18. Shannon Solomon, LMTMassage Therapist1245629567
  19. Steven Solomon, DPTPhysical Therapist1710671714
  20. Peter Solon, PHDClinical Psychologist1801177456
  21. Kirby Soltis, LPCMental Health Counselor1386217602
  22. Joseph Soma, M.A., M.S.Professional Counselor1043460561
  23. James Songfield, M.A.Professional Counselor1013065374
  24. Sandra Sonoda, RNRegistered Nurse1649098070
  25. Ernest Soper, PH.D.Clinical Psychologist1881642825
  26. Joan Soper, PH.D.Clinical Psychologist1962460667
  27. Lois Sorlie, LCSWClinical Social Worker1417661349
  28. Luann SosaMental Health Counselor1073863726
  29. Teresa SosaMental Health Counselor1871900571
  30. Vanessa SosaBehavior Technician1396501813
  31. Andrea Sotelo, RNRegistered Nurse1780610162
  32. David Soucy, M.A.Mental Health Counselor1477723435
  33. Maureen Soucy, LPNLicensed Practical Nurse1225354608
  34. Olivia SoukupBehavior Technician1346849874
  35. Jeffrey South, DPTPhysical Therapist1649519034
  36. Teresa Southard, PTPhysical Therapist1174732689
  37. Shannon SovndalEmergency Medicine Physician1912984394
  38. Alyssa Spampinato, NONEBehavior Technician1760121347
  39. Rye Spanton, LPCCMental Health Counselor1558055368
  40. Carol Spar, PSY.D.Clinical Psychologist1205987807
  41. Jordan Sparrow-Antonio, MSMental Health Counselor1558196204
  42. Martha Spaulding, P.T.Physical Therapist1295792042
  43. Andrew Spears, M.D.Gastroenterology Physician1144249665
  44. Donald Spears, ND, MSOM, LACAcupuncturist1003395179
  45. Nancy SpecianMassage Therapist1518186519
  46. Connor Speck, MS, ATCAthletic Trainer1871058545
  47. Jordan SpectorAddiction (Substance Use Disorder) Counselor1356870661
  48. Nina Spencer, LMTMassage Therapist1285137208
  49. Corydon Sperry, MDFamily Medicine Physician1689789661
  50. Malia Sperry, PSY.D.Mental Health Counselor1679690689

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.