Doctors and health care providers in Columbia, MD
6,690 individual NPPES records list a practice address in Columbia, 4th of 284 Maryland cities. The largest group is behavior technician: 2,034, 30% of the city's records, against 16% across Maryland. Page 33 of 134.
The 8 largest groups in Columbia
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
Columbia in Maryland
- Rank in Maryland4th of 284 cities by records
- Share of the state4.2% of Maryland's records
- Specialties present25 or more taxonomy codes
- Top three groups47.3% of all records
- Behavior Technician rank3rd of the 10 Maryland cities with the most
Compared with Maryland as a whole, Columbia has 7.6× the state's share of registered nurse records and 0.47× its share of occupational therapist records.
Providers in Columbia, alphabetically
- Dona DonadioBehavior Technician1588549059
- John Donahue, PSY.D.Clinical Psychologist1477961480
- Kaitlyn DonaldsonBehavior Technician1710654504
- Stacey DonaldsonBehavior Technician1487191995
- Sirisha Donekal, MDCardiovascular Disease Physician1386826824
- Caroline Dong, PA-CPhysician Assistant1922704691
- Nicholas Donkor, MDPediatrics Physician1578574026
- Jaelyn DonnellBehavior Technician1891583191
- Mark Donovan, LCPC, LCADCProfessional Counselor1912909730
- Nancy Doong, PA-CPhysician Assistant1306855473
- Simon DoquangRegistered Nurse1740768431
- Jarena DorborBehavior Technician1700744281
- Ivy Dacia Dorsett, RNRegistered Nurse1063856946
- Joelle DorseyBehavior Technician1144179565
- Sangita Doshi, DDSPediatric Dentistry1700869948
- Jacqueline Douge, MDPediatrics Physician1942218300
- Alexandrea DoughertyBehavior Technician1427991579
- Barbara Dougherty, LCSW-CClinical Social Worker1548276322
- Grace DoughertyBehavior Technician1215503552
- Maura Dougherty, BCBABehavior Analyst1215453444
- Hannah Dougherty-VonaBehavior Technician1548017205
- Jimmy DouglasProfessional Counselor1831670405
- Tia DouglasBehavior Technician1134099294
- Tiana Douglas GoeinsPhlebotomy Technician1669164109
- Kathleen Douglass, M.A., LCPCProfessional Counselor1679761290
- Dina DoutySpeech-Language Pathologist1629546254
- Kendall DouvilleClinical Social Worker1982201125
- Donnetta Dowdy, BSNRegistered Nurse1972994549
- Tanganyika DoweryBehavior Technician1053075051
- Natalie Dowgiewicz, PTPhysical Therapist1427349182
- Mary Dowling, LCSW-CClinical Social Worker1518168467
- Princess Dowling, REGISTERED NURSERegistered Nurse1982193025
- Erica DowningBehavior Technician1851043574
- Nailah DowningBehavior Technician1235832726
- Danielle Doyle, MDAnesthesiology Physician1063647998
- Jacqueline DoyleOccupational Therapist1861036915
- Shannon Doyle, LCSW-CClinical Social Worker1174292585
- Jillian Dozier, APRNNurse Practitioner1184420218
- Albiona DragidellaBehavior Technician1326706797
- Lorraine Dragonir, D.D.S.Dentist1699936021
- Patricia Drake, RNRegistered Nurse1316283781
- Shawntel Drake, LMTMassage Therapist1932038361
- Tara DrakeBehavior Technician1639973407
- Moor DrammehMental Health Counselor1619631967
- Mary Drass, M.D.Critical Care Medicine (Internal Medicine) Physician1245578426
- Angela Drayer, RNRegistered Nurse1922421403
- Megan Drew, APRN-BC, APNPPrimary Care Nurse Practitioner1043435100
- Angela Drewniak, CRNPAcute Care Nurse Practitioner1750539375
- Elaine Drewyer, LCSW-CClinical Social Worker1235637737
- Jovon Drone, LGPCMental Health Counselor1750097994
The largest Maryland cities
- Baltimore35,183
- Rockville14,353
- Bethesda7,245
- Silver Spring6,531
- Frederick3,981
How to read this directory
Columbia, Maryland appears in the CMS National Plan and Provider Enumeration System with 6,690 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 Columbia - 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 Columbia 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 Columbia is weighted toward Behavior Technician (2,034 clinicians, followed by Registered Nurse with 783 and Clinical Social Worker with 346). 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 Maryland's population, Columbia reports roughly 108.2 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 Maryland's most common specialties, Home Health Aide is the most prominent one with no provider currently listing a Columbia practice address, a coverage gap Columbia patients typically fill by traveling to a larger nearby hub.
For Columbia 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 Columbia, MD?
There are 6,690 registered healthcare providers in Columbia, MD, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Columbia?
The most common specialties in Columbia are Behavior Technician, Registered Nurse, Clinical Social Worker, Behavior Analyst, Physical Therapist. Behavior Technician has the most providers with 2,034.
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.