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 31 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
- Jacob DemosBehavior Technician1487142287
- Ayanna DennisBehavior Technician1225923600
- Braxton DennisBehavior Technician1306703079
- Jacquelynn DennisRegistered Nurse1073923173
- Josephine Dennis, M.D.Family Medicine Physician1992803415
- Linda Dennis, FNPFamily Nurse Practitioner1437674850
- Susan Dennis, LMTMassage Therapist1568055523
- Nancy Denton, O.D.Optometrist1497950810
- Regina Deoud, LGPCCounselor1184412157
- Grace DepaulBehavior Technician1912845470
- Rebeccah Depp, FNPNurse Practitioner1972153849
- Anthony Der, LCPCMental Health Counselor1275025512
- Kiona DerichoBehavior Technician1801688957
- Melissa Dernetz, RNRegistered Nurse1457819237
- Arvind Desai, M.D.Geriatric Medicine (Family Medicine) Physician1851346423
- Paulomi Desai-Pandya, DDSGeneral Practice Dentistry1215263330
- Haianha Desamour, MDAnesthesiology Physician1275162844
- Aydelotte DeshieldsBehavior Technician1235707456
- Delena Deshields, RN, MSN/HCMRegistered Nurse1972988335
- Avani DeshpandeBehavior Technician1922995372
- Lisa Despres, MAC, LACAcupuncturist1760251722
- Asmamaw Desta, PHARMDPharmacist1225853849
- Daphne DestinyBehavior Technician1053153973
- Rajwinder Deu, M.D.Sports Medicine (Family Medicine) Physician1194749739
- Kelsey DeutschBehavior Technician1306780812
- Rachel DevincentzClinical Social Worker1891476420
- Eileen DeweyAddiction (Substance Use Disorder) Counselor1972191369
- Victoria DeweyBehavior Technician1982349460
- Angela DewsRegistered Nurse1033526082
- Peter Dexheimer, DCChiropractor1952401754
- Chayan DeyEmergency Medicine Physician1710913967
- Ruby Dey, M.D., M.P.H.Pediatrics Physician1407985484
- Tara Deyampert, M.D.Specialist1669430427
- Tiffini Deyampert, NPAdult Health Nurse Practitioner1285366450
- Lisa Deyulia, BSN, MSN, ANPAdult Health Nurse Practitioner1912185687
- Rakriti DhakalBehavior Technician1144150087
- Ravinder Dhallan, M.D.Emergency Medicine Physician1740538339
- Milan Dhanani, DDSOral and Maxillofacial Surgery (Dentist)1588191787
- Manisha Dhananjaya, DDSGeneral Practice Dentistry1346762507
- Nikitta DhillonPhysician Assistant1619515442
- Li Diao, L.A.CAcupuncturist1699098566
- Adelaida DiazBehavior Technician1932701802
- Michelle DiazBehavior Technician1235982844
- Noelle DiazSocial Worker1750174801
- Sophy DiazBehavior Technician1841966397
- Larissa Dichard, LCSW-CSocial Worker1669211579
- Tamra Dicken, RNRegistered Nurse1144996208
- Dorothea Dickens, CNM; APRNAdvanced Practice Midwife1902516248
- Jillian Dickenski, CRNPFamily Nurse Practitioner1700580438
- Elizabeth Dickerson, LMT, NMTMassage Therapist1396589198
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.