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 42 of 113.
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
- Katie Halverstadt, RN, IBCLCLactation Consultant (Registered Nurse)1255148151
- Laura HalverstadtMental Health Counselor1235685710
- Dale Hameister, DCChiropractor1639246424
- Deborah Hamilton, MD, MSPHPediatrics Physician1447334941
- Emily Hamilton, PH.D.Clinical Psychologist1417278961
- Frances Hamilton, M.D.Family Medicine Physician1407839137
- Merry Hamilton, PT, PHDPediatric Physical Therapist1760544944
- Todd Hamilton, DMDGeneral Practice Dentistry1093075681
- Allysen HamlinBehavior Technician1861075376
- Jon Hammarstedt, MDOrthopaedic Hand Surgery Physician1427552355
- Katherine Hammond, DCChiropractor1659070795
- Gary Hamner, P.A.Physician Assistant1447435078
- Alexandria HamptonMental Health Counselor1528704699
- Margaret Hampton, L.AC., DIPL.OMAcupuncturist1164864427
- Kate Hamzi, NPPsychiatric/Mental Health Nurse Practitioner1649040908
- Bryan Handwork, PA-CPhysician Assistant1639739097
- Terri Handy, PTPhysical Therapist1902803778
- Anne Hanks, PTSpecialist1114984325
- Kevin Hanley, M.D.Anatomic Pathology & Clinical Pathology Physician1003877390
- Douglas Hanna, MS PTPhysical Therapist1548388853
- Robert Hannagan, DDSDentist1780706192
- Gary Hannoch, LCSW, QCSWClinical Social Worker1104093699
- Heather HansClinical Social Worker1972002657
- Jacob Hans, D.C.Chiropractor1679735732
- Olivia HansberryCounselor1649135625
- Christine Hansen, M.D.Gynecology Physician1447362553
- Kelly Hansen, DPTPhysical Therapist1841730082
- Richard Hansen, D.C.Chiropractor1972740538
- Sarah HansenMental Health Counselor1366809220
- Elaine Hanson, PSY.D.Clinical Psychologist1245446822
- Kestrel Hanson, M.A.Mental Health Counselor1699898130
- Malia Hanson, RBTBehavior Technician1780529339
- Nathan HantzPharmacist1013845080
- Kristin Hapke, OTOccupational Therapist1376378166
- Shannon HarbisonBehavior Analyst1912329327
- Dana HardenProfessional Counselor1346495371
- Kathryn Hardin, MA CCC-SLPSpeech-Language Pathologist1790906535
- Kathleen Harding, RN, ADVANCED PRACTICNurse Practitioner1154525632
- Micaela Hardyman, PSY.DClinical Psychologist1871322461
- Miroslawa Hari, R.D.H.Dental Hygienist1962784751
- Sharon Harman, R.M.T., L.M.T.Massage Therapist1467901181
- Laura Harmon, MDTrauma Surgery Physician1053607549
- Erin Harner, FNPFamily Nurse Practitioner1699665422
- Stephani Harp, FNP-BCFamily Nurse Practitioner1265306948
- Suzanne Harp, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1386439511
- Clayton Harper, DDS, MDOral and Maxillofacial Surgery (Dentist)1851371025
- Mary HarperRegistered Nurse1831233634
- Robert Harper, M.D.Orthopaedic Surgery Physician1124488572
- Erin Harper-Sanchez, CNM, NP, RNFamily Nurse Practitioner1629293436
- Jason Harpp, DPTPhysical Therapist1255645099
The largest Colorado cities
- Denver25,068
- Colorado Springs19,771
- Aurora17,400
- Fort Collins6,928
- Lakewood4,944
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.