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 102 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
- Millicent Rios, BCBA, LBABehavior Analyst1790177558
- Gabriela Rios-MartinezMental Health Counselor1477151538
- Madison RipleyBehavior Technician1043166150
- Naomi Riselsheimer, RNRegistered Nurse1356019251
- Nicholas Risko, MDEmergency Medicine Physician1780025700
- Tyler Rits, BS PSYCHOLOGYBehavior Analyst1255793188
- Sage RivardeBehavior Technician1184583460
- Lizbeth RivasBehavior Technician1154042240
- Elvys Rivas EcheverriaBehavior Technician1295514891
- Alexa RiveraBehavior Technician1073432514
- Erick RiveraBehavior Analyst1689550683
- Lauren Rivera, PTPhysical Therapist1831502400
- Mirian RiveraBehavior Technician1851245229
- Sadhia Rivera, OTOccupational Therapist1861616450
- Aisha Rivera Margarin, MDPublic Health & General Preventive Medicine Physician1366741365
- Nashali Rivera MartinezBehavior Technician1871217083
- Ana Rivera Ortiz, LMSWSocial Worker1619777331
- Katie Rivera SalgadoBehavior Technician1245185651
- Dylan RiveroBehavior Analyst1932615515
- Alyssa RiversBehavior Technician1003544248
- Naamon RiversBehavior Technician1932989514
- Natalie Rivers, PT, DPTPhysical Therapist1174062442
- Paula RiversSpeech-Language Pathologist1467922336
- Saychelle RiversBehavior Technician1518673649
- Ana Roa CuasBehavior Technician1023991080
- Breanna RoachFamily Nurse Practitioner1932050143
- Sara RoachPharmacist1366727141
- Shenell RoaryBehavior Technician1821721499
- Ashley RobersonMarriage & Family Therapist1457851479
- Ashanti RobertsBehavior Technician1659223139
- Lea RobertsBehavior Technician1184457962
- Oyinlola Roberts, DOPediatrics Physician1306473228
- Sara RobertsRegistered Nurse1033599345
- Tajah RobertsBehavior Technician1477414191
- Wesley RobertsBehavior Technician1457284671
- Jaiyla Robertson-SnoddyBehavior Technician1962396408
- Markisha RobinBehavior Technician1740063718
- Amy RobinsonRegistered Nurse1053878264
- Ashley RobinsonBehavior Technician1528738721
- Brian RobinsonBehavior Technician1003518382
- Comfort RobinsonHome Health Registered Nurse1952735599
- Corrin RobinsonBehavior Technician1457247769
- Dymond RobinsonBehavior Technician1982498028
- Gina Robinson, LCSW CSocial Worker1376688812
- Jennie Robinson, CRNPNurse Practitioner1043057078
- Joy RobinsonMental Health Counselor1033772934
- Karon RobinsonBehavior Technician1326965435
- Marie-Adelaide Robinson, PT, DPTPhysical Therapist1225887797
- Stephanie RobinsonBehavior Technician1336024264
- Tina RobinsonBehavior Technician1831035674
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.