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 72 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
- Lilliana LombardiBehavior Technician1518803402
- Sharon Londeree, FNPFamily Nurse Practitioner1649792698
- Dianne London, CRNPAcute Care Nurse Practitioner1942518824
- Karen Long, RNRegistered Nurse1023309150
- Katrina LongBehavior Technician1508339490
- Melissa Long, RNRegistered Nurse1659767754
- Michelle Long, LCPATProfessional Counselor1326654161
- Sydney LongBehavior Technician1144142894
- Lylisa Long- SuttonBehavior Technician1861161614
- Brittany LongmireBehavior Technician1568393627
- Susan Loomis, MS CCC-SLPSpeech-Language Pathologist1497129464
- Alejandra LopezRegistered Nurse1609251065
- Martin LopezBehavior Technician1346939824
- Carl Lord, M.D.Obstetrics & Gynecology Physician1063462349
- Katherine Lorenz, MAC LACAcupuncturist1821330911
- Marlyn Lorenzo, MDRheumatology Physician1639107097
- Sheila Lorimer, RN BSNRegistered Nurse1952717225
- Michelle LoryBehavior Technician1902474323
- Michelle Lott, RNRegistered Nurse1568138709
- Brandi Loughery Goodrich, RN IBCLCRegistered Nurse1144737131
- Christina LouiePharmacist1326499104
- Adhassa LouisBehavior Technician1699443655
- Milca LouisBehavior Technician1841952553
- Miriam Love, L.C.S.W-CClinical Social Worker1588770523
- Teresa Love, MS, RDRegistered Dietitian1497883755
- Vincent Love, LCSW-CClinical Social Worker1396810248
- Marcie Lovell, MSW LCSW-CMental Health Counselor1790187185
- Catherine Loverdi, RNRegistered Nurse1376019729
- Keith LovinRegistered Nurse1295694115
- Anna LovingBehavior Technician1699569459
- Margaret Lowenstein, CRNPFamily Nurse Practitioner1023382587
- Beth Lowenthal, PHARMD, MBAPharmacist1912502295
- Esther Lowery, LCMFTMarriage & Family Therapist1932447448
- Kirsten LoweryBehavior Technician1700745304
- Maria Lowery, RNRegistered Nurse1427449008
- Caroline Lowman, PHDClinical Child & Adolescent Psychologist1518846435
- Amy Lownes, PHARMDPharmacist1790156099
- Bianca LowryBehavior Technician1295625739
- Jennifer Lowry, RN, BSNRegistered Nurse1073991980
- Emily Loy, NPPediatric Nurse Practitioner1659151629
- Connor Lu, DDSGeneral Practice Dentistry1851224455
- Tamara Lubliner, LCSW-CClinical Social Worker1154459154
- Dominique LucasBehavior Technician1063921211
- Niyah LucasBehavior Technician1275372922
- Tonilee Lucchino, LCSW-C, RPTClinical Social Worker1821445545
- Stephen LuceBehavior Technician1871219451
- Daniel Ludlow, LAT, ATCAthletic Trainer1053977900
- Marilyn Ludwick, OTR/LPediatric Occupational Therapist1841634300
- Jesse Ludwig, LCPCMental Health Counselor1962054783
- David Luebbert, M.D.Family Medicine Physician1922419464
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.