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 63 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
- Kelly Mack, SLPSpeech-Language Pathologist1578896460
- Lindsey Mack, PT, DPTPediatric Physical Therapist1053556787
- Megan MackAdvanced Practice Midwife1528550605
- Michael MackAddiction (Substance Use Disorder) Counselor1114333796
- Megan Mackenzie, LCSWClinical Social Worker1043825672
- Katherine MacnairMental Health Counselor1821384611
- Mary Macsalka, M.D.Gynecology Physician1205942422
- Sharla Macy, LMFTMarriage & Family Therapist1407877525
- Michelle MaczkaMental Health Counselor1235505546
- Jadyn Madden, LPC ASSOCIATEMental Health Counselor1285349183
- Liesel Maddox, RDNRegistered Dietitian1225646839
- Maria Madjar, CCC-SLPSpeech-Language Pathologist1013789841
- Satori MadroneMental Health Counselor1376935114
- Alexandria Maffitt, LCSWClinical Social Worker1487985925
- Morgan Magill, BCBABehavior Analyst1679168199
- Palmer Mahal, MA, LPCCProfessional Counselor1447144118
- Bryan Mahan, D.O.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1134159023
- Michael Mahan, PT, DPTPhysical Therapist1063921476
- Elizabeth Maher, LPCProfessional Counselor1477019222
- Fayiz Mahgoub, ODStudent in an Organized Health Care Education/Training Program1376202861
- Barbara Mahler, BARBARA MAHLER O.M.Acupuncturist1326292285
- Julia MahlerPharmacist1831992833
- Elizabeth Mahon, PTPhysical Therapist1861612962
- Barbara Maiberger, MA LPCProfessional Counselor1013090711
- Danielle MaidaSocial Worker1578818316
- Myriam Maida, LPCCMental Health Counselor1174037337
- Olivia MainAthletic Trainer1235994211
- Krystel MairsProfessional Counselor1992535140
- Anne Majewski, DPTPhysical Therapist1649080409
- Maureen Makar, M.S.W.Social Worker1831254895
- Erik Makineni, PHARM. D.Pharmacist1982904470
- Kathryn Makowski, PASurgical Physician Assistant1962241760
- Eva Malanowski, PSY.D.Clinical Psychologist1164755021
- Janine MalcolmNaturopath1255662755
- Rebekah Maldonado, NONEBehavior Analyst1366194979
- Krista Malek, MAMental Health Counselor1861820185
- Nicholas MalerneeAddiction (Substance Use Disorder) Counselor1992106603
- Alyssa Malito, MAMental Health Counselor1447580667
- Kathleen Malone, LPCProfessional Counselor1982108858
- Robert Maltz, B.A.Mental Health Counselor1477941284
- Alicia Maltzman, N.P.Family Nurse Practitioner1710960380
- Diana Mancini, MDInternal Medicine Physician1619990090
- Francine Mandel Sheets, RNRegistered Nurse1174230593
- Sunanda ManePhysical Therapist1386823128
- Marinela Maneiro-GoodwinMental Health Counselor1063863116
- Erin Mang, DPTPhysical Therapist1306473483
- Mary MangelsenMental Health Counselor1164778395
- David MangineOccupational Therapist1033508668
- Christine Mangum, LPCProfessional Counselor1740657865
- Samantha MangumMental Health Counselor1942593694
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.