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 103 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
- Toni Robinson, RN, BSN, MBARegistered Nurse1336719483
- Tyler RobinsonProfessional Counselor1568258051
- Vallisha RobinsonBehavior Technician1578375820
- Yolanda Robinson, RNRegistered Nurse1932629821
- Amber Robinson BijouBehavior Analyst1992291199
- Shatia Robinson-BlaylockBehavior Technician1033674742
- Nyssa Robles, LCSW-CClinical Social Worker1750610820
- Sandra Robson, PTPhysical Therapist1669482899
- Elise Rochford, OTROccupational Therapist1760940456
- Marie Rock, RNRegistered Nurse1629486014
- Amber RodelaBehavior Technician1033917281
- Laural Rodgers, RBTBehavior Technician1770350647
- Erika Rodkey, LICSWClinical Social Worker1184078347
- Ada Guiselle Rodriguez, PSY.D.Clinical Psychologist1578889978
- Alejandro Rodriguez, M.D.Urology Physician1023182011
- Danielle RodriguezAssistant Behavior Analyst1710778154
- Ivanna RodriguezBehavior Technician1720792328
- Jennifer RodriguezBehavior Technician1225849797
- Kimberly Rodriguez, OTR/L, CLTOccupational Therapist1336867704
- Steven RodriguezBehavior Technician1790497972
- Yolanda RodriguezBehavior Technician1942147947
- Raquel Rodriguez-OcasioBehavior Technician1073280723
- Katharina Roesch, DPTPhysical Therapist1467235812
- Cristian RogersBehavior Technician1154116184
- Dylan RogersBehavior Analyst1700558996
- Keri RogersBehavior Analyst1114527223
- Lisa Rogers, RNRegistered Nurse1255841441
- Samantha Rogers, CRNP-PMHPsychiatric/Mental Health Nurse Practitioner1417679226
- Yvonne RogersProfessional Counselor1730628934
- Jennifer Rogofsky, PTGeriatric Physical Therapist1154651842
- Abigail RohmillerBehavior Technician1770456303
- Francisco Rojas, M.D.Obstetrics & Gynecology Physician1497762199
- Grecia RojasBehavior Technician1861294076
- Jonathan Rojas, NP-CFamily Nurse Practitioner1598312498
- Kerri Rokisky, PTPediatric Physical Therapist1518170588
- Darishea RollinsBehavior Analyst1932692092
- Kaiya RollinsBehavior Technician1568297836
- Nicole Rollins, BEHAVIOR TECHNICIANBehavior Technician1659055374
- Cynthia Roman, MS, OTR/LOccupational Therapist1295962132
- Sara RomaniPhysician Assistant1336928845
- Gena Romanow, M.D.Neurology Physician1366582280
- Rebecca Romelfanger, SLPASpeech-Language Assistant1962260455
- Cathy Romeo, N.P.,PH.D.Nurse Practitioner1962600445
- Jess Romeo, PMHNPPsychiatric/Mental Health Nurse Practitioner1821423211
- Mayeli RomeroBehavior Technician1518893783
- Alisson Romero AvalosBehavior Technician1790671972
- Stephen RomigPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1942659347
- Michael Ronan, PACSurgical Physician Assistant1255349940
- Fnu Roohi BaigBehavior Technician1386520476
- Madison RootBehavior Analyst1093339509
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.