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 130 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
- Matthew Williams, MDHematology & Oncology Physician1063040681
- Megan Williams, PHDClinical Psychologist1174256275
- Melodie WilliamsRegistered Nurse1174193171
- Michelle Williams, CRNP-PMHPsychiatric/Mental Health Nurse Practitioner1912151531
- Nava Williams, LMSWSocial Worker1144001967
- Nia Williams, RN, MSN, MPH, IBCLCLactation Consultant (Registered Nurse)1740795988
- Oyinkansola Williams, NPPsychiatric/Mental Health Nurse Practitioner1821803578
- Patricia Williams, EDD, RBTBehavior Technician1093605859
- Quinten WilliamsBehavior Technician1285405910
- Shelby Williams, RBTBehavior Technician1265066609
- Staci WilliamsBehavior Technician1841002698
- Stephanie Williams, DPTPhysical Therapist1245847912
- Sydney Williams, DPTPhysical Therapist1164168183
- Tiffany WilliamsBehavior Technician1720795909
- Tiffanye Williams, WHNPWomen's Health Nurse Practitioner1376167478
- Tondaleyo WilliamsRegistered Nurse1770998106
- Unique WilliamsBehavior Technician1982417986
- Yolande Williams, M.A., CCC-SLPSpeech-Language Pathologist1376324111
- Zion WilliamsBehavior Technician1649064437
- Shaneka Williams-Waddell, RBTBehavior Analyst1851132377
- Felicia Williamson, CCC-SLPSpeech-Language Pathologist1447568407
- Joyce WilliamsonRegistered Nurse1922401702
- Julie Williford, MOT OTR/LHand Occupational Therapist1083015051
- Sophie Willihnganz, DPTPhysical Therapist1467386243
- Anu Olayinka Willingham-McLain, PA-CPhysician Assistant1295287753
- Jamia WillisBehavior Technician1437802378
- Karen Willis, RNRegistered Nurse1093171209
- Lajuana Willis, R.N.Ambulatory Women's Health Care Registered Nurse1457744336
- Kathleen WillmoreBehavior Technician1861050536
- Jawann Wills, LCSW-CClinical Social Worker1730745951
- Kathleen WillsRegistered Nurse1245618156
- Sophia Wilmot, FNP-CNurse Practitioner1225402969
- Caroline Wilner, LCSWCMental Health Counselor1073509295
- Alison Wilson, PTPhysical Therapist1962518001
- Cheri WilsonBehavior Technician1871309203
- Christina WilsonRegistered Nurse1346633856
- Delicia WilsonBehavior Technician1407779028
- Erica WilsonBehavior Technician1669159729
- Ilene Wilson, RNRegistered Nurse1619371523
- Jeremy Wilson, MS BCBA LBABehavior Analyst1235927872
- Shalexis WilsonBehavior Technician1689281974
- Kimberly Wiman, PT, DPTPhysical Therapist1346732047
- Celia Winchell, M.D.Psychiatry Physician1265794093
- Rishanda Winchester, LGPCProfessional Counselor1235821414
- Janae Winder, LCPCProfessional Counselor1104307438
- Gabriel Windsor-Reedy, RBTBehavior Technician1194511121
- Rashida Winestock, RNRegistered Nurse1205335262
- Karen Winfield, RNRegistered Nurse1124469010
- Ta'Niyah WingateBehavior Technician1700735206
- Holly WinklbauerBehavior Technician1528648425
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.