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 90 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. Shayan Santicola, L. AC.Acupuncturist1780870162
  2. Timothy Santner, LMTMassage Therapist1750945127
  3. Austin Santos Haynes, LMT, NMTMassage Therapist1972335230
  4. Melisa Sanzone, LPCProfessional Counselor1942543905
  5. Holly Saracco, PA-CPhysician Assistant1114243979
  6. Billie SasakiMental Health Counselor1528634607
  7. Randall Sato, M.D.Emergency Medicine Physician1982681854
  8. Tamra Sattler, MFT, PHDMarriage & Family Therapist1194018044
  9. Neena Satyanarayan, M.D.Anesthesiology Physician1609165638
  10. Rachel SaucedaBehavior Technician1205756418
  11. Mary Saunders, L.AC.Acupuncturist1598728388
  12. Andrew SavageBehavior Technician1174085187
  13. Katherine Savage, RDHDental Hygienist1285054684
  14. Teri Savoie, LCSWClinical Social Worker1801343603
  15. Gerald Savory, DDSDentist1518187376
  16. Riley SawyerPhysician Assistant1982568218
  17. Jenny Sayavong, NONEBehavior Technician1871175919
  18. Kimberly Scales, PTPhysical Therapist1144553454
  19. Benjamin Scallon, M.D.Internal Medicine Physician1376923250
  20. Joanne Scanlon, MSWSocial Worker1699779306
  21. Kathryn Scanlon, LCSWClinical Social Worker1497133847
  22. Lisa Scatena, M.D.Dermatology Physician1861529893
  23. Christopher SchaefbauerCounselor1518257351
  24. Hannah Schaefer, LPCMental Health Counselor1275112534
  25. Lisa Schaewe, MA, LPCMental Health Counselor1497817977
  26. Jennifer Schafer, DDSDentist1992481493
  27. Jessica SchafferCounselor1962787887
  28. Alana SchaffmanMental Health Counselor1972464469
  29. Eric Schainuck, MFTCMarriage & Family Therapist1811842594
  30. Erin SchallBehavior Technician1225641202
  31. Brian Schaning, P.T.Physical Therapist1265691448
  32. Phyllis Schechtman, LCSWClinical Social Worker1972136687
  33. Lynn Scheidenhelm, LCSWSocial Worker1114153061
  34. Leslie Schein, PTPhysical Therapist1598904450
  35. Michael Schiappa, DDSOral and Maxillofacial Surgery (Dentist)1831777523
  36. Rachelle Schieffer, M.S.Professional Counselor1275618431
  37. Catherine Schieve, M.D.Psychiatry Physician1497883839
  38. Miriam Schiff, LMFTMarriage & Family Therapist1013048651
  39. Paula Schild, PHDMental Health Counselor1245531136
  40. Lanning Schiller, PH.D.Clinical Psychologist1114068723
  41. Don Schilling, M.D.Otolaryngology Physician1881612141
  42. Layla Schimmel, PSY.D.Clinical Child & Adolescent Psychologist1447800859
  43. Zachary Schimmoller, RNRegistered Nurse1275480840
  44. Wolfgang Schlage, MA, LPC, PHDProfessional Counselor1366573008
  45. Sarah Schlagel, B.A.Mental Health Counselor1891085411
  46. Ann SchlarbCounselor1780831784
  47. Stephen SchlatterMental Health Counselor1679238216
  48. Michael SchlegelEmergency Medicine Physician1740252220
  49. Michaela Schleinz, OTDOccupational Therapist1427601772
  50. Lenora SchlosserClinical Social Worker1578126264

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.