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 75 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
- Jonathan Nienhouse, FNPFamily Nurse Practitioner1841388402
- Jamie Niesen, M.A.Mental Health Counselor1164666285
- Alenna Nilsen, MA OF TEACHINGMedical Physician Assistant1134883515
- Susan Nimmanheminda, PHD, LCSW, CASClinical Social Worker1649990920
- Alex NimmerMental Health Counselor1326731639
- Abigail NippMarriage & Family Therapist1134911498
- Daniel NishinaMental Health Counselor1659527521
- Amy NitchmanHealth Educator1295378149
- Franklin NkemPsychiatric/Mental Health Nurse Practitioner1790553972
- Jenna NoahMental Health Counselor1871841536
- Susan Nofziger, MSW, LCSWClinical Social Worker1588770218
- Adele Noll, P.T.Physical Therapist1740372283
- Ann Noonan, LPC, CAC IIIProfessional Counselor1467875781
- Hilary Norberg, RDH, BSDental Hygienist1609208305
- Lynn NorbergAcupuncturist1902025356
- Emily NorburyMental Health Counselor1922740968
- Adam NordhoyBehavior Technician1487386199
- Robyn Nordstrom Lane, M.D.Family Medicine Physician1902028079
- Laura Norman, PAPhysician Assistant1477110765
- Kristina Normann, LCSW, LACClinical Social Worker1932416351
- Kimberly NorquistDental Hygienist1548629439
- Ann Norris, MSW, LCSWMental Health Counselor1427196690
- Gregory Norris, DDSOrthodontics and Dentofacial Orthopedics Dentistry1902972383
- Jennifer Norton, PH.D.Clinical Psychologist1285751396
- Gloria NouelMental Health Counselor1699023317
- Sepeideh Nouhi, MDFamily Medicine Physician1689757213
- Sandra Novak, MS, MA, SEP, LPCProfessional Counselor1225352412
- Joanna Nowakowski, NPFamily Nurse Practitioner1326452376
- Brooke NullMental Health Counselor1285202267
- Kathy Nunemaker, M.A.Speech-Language Pathologist1083756639
- Nancy Nunes, L.C.S.W.Clinical Social Worker1437594157
- Tamra NunezNurse's Aide1790631018
- Rachel Nussbaum, L.AC.Acupuncturist1407495914
- Christopher Nusser, M.D.Diagnostic Radiology Physician1538152038
- Anil Nutakki, D.D.S.General Practice Dentistry1427316215
- Nathaniel Nutter, DCInternist Chiropractor1942822838
- Richard Nuzzi, DCChiropractor1225155294
- Helen Nychka, M.S.Speech-Language Pathologist1801928098
- Lana Nye, LCSWClinical Social Worker1780167825
- Elinor Nygren, LPCMental Health Counselor1336364009
- John O'Brien, PSYDMental Health Counselor1073921649
- Shani O'BrienSpeech-Language Pathologist1023844115
- Sophia O'ConnorMental Health Counselor1295186542
- Catherine O'Day, LCSWClinical Social Worker1649486218
- Kristen O'Kelly, LPCC, CASProfessional Counselor1699473058
- Ryan O'Millian, LPCCMental Health Counselor1063029510
- Christine O'Neill, M.S.Mental Health Counselor1164541827
- Diana O'Riordan VerschoorMental Health Counselor1154192789
- Glenda O'Rourke, LPCCounselor1003067083
- Renee O'Shea, FNPFamily Nurse Practitioner1578619854
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.