Doctors and health care providers in Denver, CO
25,068 individual NPPES records list a practice address in Denver, 1st of 193 Colorado cities. The largest group is clinical social worker: 1,836, 7% of the city's records, against 5% across Colorado. Page 334 of 502.
The 8 largest groups in Denver
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
Denver in Colorado
- Rank in Colorado1st of 193 cities by records
- Share of the state16.8% of Colorado's records
- Specialties present25 or more taxonomy codes
- Top three groups18.1% of all records
- Clinical Social Worker rank1st of the 10 Colorado cities with the most
Compared with Colorado as a whole, Denver has 1.8× the state's share of psychiatry physician records and 0.39× its share of behavior technician records.
Providers in Denver, alphabetically
- Daniel Oporto, PSY.D.Psychologist1407644735
- Johanna OppeckProfessional Counselor1750854162
- Jenna OppenheimerPhysician Assistant1972977890
- David Opperman, M.D.Otolaryngology Physician1144399197
- Julia Oppy, LMFTMarriage & Family Therapist1225647373
- Simona Oprea, MDInfectious Disease Physician1194711416
- Harley Opsahl, NPFamily Nurse Practitioner1972091122
- Suzanne Orahood, RXN,CNS,RNAdult Psychiatric/Mental Health Clinical Nurse Specialist1851426381
- Nicholas Orchard, PA-CPhysician Assistant1770955478
- Carissa OrdonezSpecialist1922475003
- Flor OrdonezAddiction (Substance Use Disorder) Registered Nurse1790384667
- Zuleima Orduno ZamarronInterpreter1265399224
- Nicole OrelBehavior Technician1669321394
- Miguel Orellana, PHARMDPharmacist1306629720
- Isabella OremusCounselor1205611035
- David Orgel, M.D.Internal Medicine Physician1013091636
- Denise Orin, OTROccupational Therapist1538158308
- Judith Orji, NPFamily Nurse Practitioner1780167106
- Nicole Orlans, LCSW, CACII, CEDSClinical Social Worker1396097739
- Elizabeth Orleans, O.D.Optometrist1548262884
- Lindsay OrleansSocial Worker1275211773
- Amy OrloffRegistered Nurse1902794316
- Jennifer Orloff, NPFamily Nurse Practitioner1790350254
- Mellisa OrnelasMental Health Counselor1194142109
- Simonne OrnelasBehavior Technician1164270971
- Franciele Ornelas BugirNurse Practitioner1124918446
- Doug Ornoff, M.D., PH.DHospitalist Physician1942734421
- Marlena Oro, NURSE PRACTITIONERAdult Health Nurse Practitioner1861629800
- Alejandra OrozcoBehavior Technician1366275083
- Jose Orozco, LMTMassage Therapist1912882135
- Maritza Orozco-ReyesRegistered Dietitian1730901760
- Caryn Orr, MDInternal Medicine Physician1982734745
- Gianna Orr, LCSWClinical Social Worker1356865919
- Pascha Orr, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1710619861
- Juan OrracaAcupuncturist1225514771
- Lisa Orraca, LMFTMarriage & Family Therapist1164963617
- John Orrego, MDEndocrinology, Diabetes & Metabolism Physician1891822839
- Christine Orrick, M.A., N.C.C.Mental Health Counselor1487854063
- Edmund Orsini, MDAnatomic Pathology & Clinical Pathology Physician1538264916
- Jessica Orszulak, NPPsychiatric/Mental Health Nurse Practitioner1295560027
- Lydia Ort, M.A. CCC-SLPSpeech-Language Pathologist1770360885
- Shoshana Ort, LCSWClinical Social Worker1821469651
- Caroline Ortega, CST,SA-CSurgical Technologist1679858005
- Cecilia OrtegaNurse's Aide1437848876
- Claudia Ortega, LCSWClinical Social Worker1245764653
- Destinee OrtegaClinical Social Worker1902411572
- Kascee OrtegaSocial Worker1215608948
- Michael Ortega, PHARMDPharmacist1013614528
- Monique Ortega, CMTMassage Therapist1790923803
- Ricardo Ortega, RNAddiction (Substance Use Disorder) Registered Nurse1598258600
The largest Colorado cities
- Colorado Springs19,771
- Aurora17,400
- Fort Collins6,928
- Boulder5,635
- Lakewood4,944
How to read this directory
Denver, Colorado appears in the CMS National Plan and Provider Enumeration System with 25,068 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 Denver - 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 Denver 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 Denver is weighted toward Clinical Social Worker (1,836 clinicians, followed by Mental Health Counselor with 1,587 and Professional Counselor with 1,126). 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, Denver reports roughly 426.5 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.
For Denver 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 Denver, CO?
There are 25,068 registered healthcare providers in Denver, CO, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Denver?
The most common specialties in Denver are Clinical Social Worker, Mental Health Counselor, Professional Counselor, Registered Nurse, Behavior Technician. Clinical Social Worker has the most providers with 1,836.
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.