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 87 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
- Sharon Nelson, D.D.SGeneral Practice Dentistry1144526245
- Katherine NerudBehavior Analyst1932794724
- Neil Nery, DPTPhysical Therapist1598789802
- Samantha Nesbeth, APRN, AGPCNP-CNurse Practitioner1437694726
- Tori Ness-GleasonBehavior Technician1205428950
- Reginald Nettles, PHDClinical Psychologist1639342348
- Stephanie Neukum, M.D.Neurology Physician1033184734
- Dara Neuman-Sunshine, MDAllergy Physician1588869911
- Kaley NewBehavior Analyst1770191108
- Antoinette Newman, M.D.Hospice and Palliative Medicine (Internal Medicine) Physician1902338569
- Tia NewmanHealth Educator1457158172
- Kristina NewsomeBehavior Technician1164197752
- Frank Nezu, M.D.Urology Physician1770658437
- Christine Olive Ngo MbengNurse's Aide1528765336
- Gerard NguediMental Health Counselor1548931942
- Varoline NgumBehavior Technician1821791799
- Angelique NguyenPharmacist1467054411
- Cam-Van Nguyen, PHARM.D.Pharmacist1861588584
- Kai Nguyen, D.C.Chiropractor1174752844
- Katrina NguyenBehavior Analyst1639682735
- Kim-Khanh Nguyen, D.OM, L.AC., DIPL.OMAcupuncturist1669839981
- Leilani Nguyen, LCSW-CClinical Social Worker1033982426
- Linda NguyenRegistered Nurse1124431820
- Mai Chi Nguyen, M.D.Pulmonary Disease Physician1679538987
- Michelle Nguyen, MDHospice and Palliative Medicine (Family Medicine) Physician1013371913
- Jason Ni, PHARM. D.Pharmacist1871141192
- Kera Nichol, CRNPNurse Practitioner1881827640
- Elizabeth Nichols, MDRadiation Oncology Physician1396903761
- Karyn Nicholson, RNRegistered Nurse1093010753
- Norman NicholsonPharmacist1477980993
- Stacy Nicholson, D.C.Rehabilitation Chiropractor1508923970
- Felicia Nicholsonbrown, M.D.Family Medicine Physician1528128345
- Darneira NickensBehavior Technician1356120430
- Melissa Nickols, PA-CPhysician Assistant1396238499
- Katherine NicodemusBehavior Technician1346040532
- Phillip Nicolas, D.C.Chiropractor1083747810
- Leila NielsenBehavior Technician1093479693
- Jamie Nieto, RNRegistered Nurse1538631916
- Josephine NievesBehavior Technician1912661638
- Kabou NignanProfessional Counselor1104482686
- Lucas Nikkel, M.D.Orthopaedic Surgery Physician1023384997
- Lynne Nikolsky, R.N.Registered Nurse1558705418
- Tingting Niu, PA-CPhysician Assistant1588638274
- Delphine NjangCase Manager/Care Coordinator1275350951
- Oliver Njong, LCSW-CClinical Social Worker1518849553
- Leah Njuguna, RNRegistered Nurse1629669510
- Nazarus NkongjowhCase Manager/Care Coordinator1376376947
- Amy Nobil, M.S., CCC-SLPSpeech-Language Pathologist1528537669
- Teri NoferMassage Therapist1619387669
- Elizabeth NohBehavior Technician1992621916
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.