Doctors and health care providers in Longmont, CO
2,381 individual NPPES records list a practice address in Longmont, 16th of 193 Colorado cities. The largest group is mental health counselor: 184, 8% of the city's records, against 6% across Colorado. Page 32 of 48.
The 8 largest groups in Longmont
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
Longmont in Colorado
- Rank in Colorado16th of 193 cities by records
- Share of the state1.6% of Colorado's records
- Specialties present25 or more taxonomy codes
- Top three groups18.7% of all records
Compared with Colorado as a whole, Longmont has 3× the state's share of behavior analyst records and 0.43× its share of behavior technician records.
Providers in Longmont, alphabetically
- Jane Obradovich, PHARMDPharmacist1043817414
- Martha Odegard, LCSW, LACAddiction (Substance Use Disorder) Counselor1326423625
- Marek Odehnal, MDInternal Medicine Physician1780643262
- Mary Odrzywolski, OTR/LOccupational Therapist1841899739
- Christian Ogden, LPCProfessional Counselor1124269857
- Herbert OgdenEmergency Medicine Physician1790769859
- Ann Ohara, MA LPCProfessional Counselor1649356858
- Ugorji Okorie, MDSleep Medicine (Internal Medicine) Physician1841687407
- Joni Oldroyd, MA, CCC-SLPSpeech-Language Pathologist1356198238
- Irene Olijnyk, M.D.Ophthalmology Physician1144307901
- Nancy Olin, M,A, CCC-SLPSpeech-Language Pathologist1174759724
- Alyssa Olivieri, MOT, OTR/LOccupational Therapist1407529266
- Jennifer OlsonNutritionist1598429011
- Katherine Olson, PAMedical Physician Assistant1366718983
- Yaira Oquendo-Figueroa, PHDClinical Psychologist1255881512
- Anibal Orecchio, LMTMassage Therapist1114631793
- Patrica Oreilly, LSWMental Health Counselor1689545873
- Laura Orozco, PHARMDPharmacist1194418509
- Andrea Orrison, M.A.Speech-Language Pathologist1073906343
- Amanda Ortega, LMFTMarriage & Family Therapist1205532231
- Gabriela Ortiz, LPCMental Health Counselor1831835263
- Dayna Orton, LMTMassage Therapist1578848420
- Ashley Ostdiek, LCSWClinical Social Worker1649951518
- Tamas Otrok, M.D.Gastroenterology Physician1851386734
- Jessica Ott, PTAPhysical Therapy Assistant1801224357
- Vandana OttoProfessional Counselor1578260212
- Jennifer Owens, LMTMassage Therapist1407602964
- Diana Oyoung-Oliver, D.O.Neurology Physician1932513124
- Bridget Pace, PHARMDPharmacist1932031051
- Robert Pace, MDAllergy & Immunology (Internal Medicine) Physician1861404220
- Nathan Pacheco, MA, NCC, LPCCMental Health Counselor1902570179
- Ryan PackMassage Therapist1588908859
- John Paddack, M.D.Urology Physician1780819607
- Ariadhne Padilla-Diffoot, PHDClinical Psychologist1679145114
- Kasey Page, DMDGeneral Practice Dentistry1578490868
- Egor PakhomovFamily Medicine Physician1184588873
- Anne-Marie Palmer, O.DOptometrist1326398967
- Amanda Panepento, PAPhysician Assistant1457902868
- Dora Paolillo, LCSWClinical Social Worker1104372408
- Sarah Parece, MSWAddiction (Substance Use Disorder) Counselor1386092492
- Mansi Parikh, MDGlaucoma Specialist (Ophthalmology) Physician1457572695
- Providence ParishOncology Registered Nurse1326927237
- Andrew Park, M.D.Orthopaedic Surgery Physician1912218165
- Dianne ParkPharmacist1902369119
- Kristin Park, ODOptometrist1164046629
- Michael Park, DDSGeneral Practice Dentistry1659439776
- Ruth Parker, RPHPharmacist1417390626
- Robyn ParkinsonBehavior Technician1538741962
- Mark Parsons, CRNACertified Registered Nurse Anesthetist1366484495
- Suzanne Parsons, M.D.Family Medicine Physician1841266293
The largest Colorado cities
- Denver25,068
- Colorado Springs19,771
- Aurora17,400
- Fort Collins6,928
- Boulder5,635
How to read this directory
Longmont, Colorado appears in the CMS National Plan and Provider Enumeration System with 2,381 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 Longmont - 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 Longmont 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 Longmont is weighted toward Mental Health Counselor (184 clinicians, followed by Physical Therapist with 145 and Massage Therapist with 116). 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, Longmont reports roughly 40.5 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 Longmont practice address, a coverage gap Longmont patients typically fill by traveling to a larger nearby hub.
For Longmont 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 Longmont, CO?
There are 2,381 registered healthcare providers in Longmont, CO, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Longmont?
The most common specialties in Longmont are Mental Health Counselor, Physical Therapist, Massage Therapist, Professional Counselor, Clinical Social Worker. Mental Health Counselor has the most providers with 184.
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.