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 126 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
- Jacqueline Wallace, PHYSICIANObstetrics & Gynecology Physician1912945155
- Jonelle Wallace, APRN, NP-CNurse Practitioner1417642364
- Kaelah WallaceBehavior Technician1043966773
- Seanquile WallaceBehavior Technician1194505768
- Paula Waller, LCSW-CClinical Social Worker1427103720
- Janeen WallopBehavior Technician1679456313
- Elizabeth Walls, CRNACertified Registered Nurse Anesthetist1003883737
- Carly WalshBehavior Technician1346037991
- Sheila WalshRegistered Nurse1255825329
- Olivia Walter, BCBABehavior Analyst1831785898
- Katherine WaltermeyerBehavior Technician1023931607
- Dianne WaltersFamily Medicine Physician1841991973
- Kondi Walters-Smith, CRNPFamily Nurse Practitioner1780190595
- Christina Walther, RBTBehavior Technician1588173462
- Sophia WanBehavior Technician1174254346
- Alice Wang, D.M.D., M.S.Orthodontics and Dentofacial Orthopedics Dentistry1588892186
- Margaret Wang, M.D.Internal Medicine Physician1154612075
- Mingxiang Wang, PHARMDPharmacist1578962239
- Pamela Wang, LGPCProfessional Counselor1811555824
- Veronica Wang, MDPediatrics Physician1639632052
- Yibei Wang, PHARMDPharmacist1902322571
- Zheng-Pin Wang, MDAcupuncturist1669894697
- Allison WardObstetrics & Gynecology Physician1700414604
- Francisco Ward, DOInterventional Pain Medicine Physician1245225226
- Phatteous WardBehavior Technician1730950023
- Jonene WarderOccupational Therapist1194121970
- Racquel WareBehavior Technician1881886778
- Catherine WarfieldRegistered Nurse1255721999
- Jessica WarfieldBehavior Technician1669329256
- Kaitlyn WarnerOccupational Therapist1306524954
- Conor WarrenBehavior Technician1578163978
- Elizabeth WarrenBehavior Technician1003751769
- Joseph Warren, LCSW-CClinical Social Worker1700241114
- Nerissa Warren, MOTR/L CPAMOccupational Therapist1134504830
- Sarah WarrenBehavior Technician1538757109
- Evan WarthenBehavior Technician1649159856
- Cierra Washington, RMPMassage Therapist1972356269
- Daphne Washington, PH.D.,LCPC,NCC,DCCProfessional Counselor1063663870
- Jennifer WashingtonFamily Nurse Practitioner1477286110
- Makiyah WashingtonBehavior Technician1821939729
- Shantale Washington, FNPNurse Practitioner1841036761
- Steven WashingtonBehavior Technician1720828510
- Jennifer WasmusRegistered Nurse1376936278
- Janis Wasser, M.A., MBASpeech-Language Pathologist1114266509
- Charlene WatersAddiction (Substance Use Disorder) Counselor1881820801
- Katharine WatersOccupational Therapist1316413362
- Marlena Waters BordleyBehavior Technician1699431676
- Javonte WatfordBehavior Technician1306660931
- Aenilah WatkinsBehavior Technician1003677345
- Asia WatkinsMental Health Counselor1568196756
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.