NPPES file of Aug 9, 2026

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 33 of 134.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

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

  1. Dona DonadioBehavior Technician1588549059
  2. John Donahue, PSY.D.Clinical Psychologist1477961480
  3. Kaitlyn DonaldsonBehavior Technician1710654504
  4. Stacey DonaldsonBehavior Technician1487191995
  5. Sirisha Donekal, MDCardiovascular Disease Physician1386826824
  6. Caroline Dong, PA-CPhysician Assistant1922704691
  7. Nicholas Donkor, MDPediatrics Physician1578574026
  8. Jaelyn DonnellBehavior Technician1891583191
  9. Mark Donovan, LCPC, LCADCProfessional Counselor1912909730
  10. Nancy Doong, PA-CPhysician Assistant1306855473
  11. Simon DoquangRegistered Nurse1740768431
  12. Jarena DorborBehavior Technician1700744281
  13. Ivy Dacia Dorsett, RNRegistered Nurse1063856946
  14. Joelle DorseyBehavior Technician1144179565
  15. Sangita Doshi, DDSPediatric Dentistry1700869948
  16. Jacqueline Douge, MDPediatrics Physician1942218300
  17. Alexandrea DoughertyBehavior Technician1427991579
  18. Barbara Dougherty, LCSW-CClinical Social Worker1548276322
  19. Grace DoughertyBehavior Technician1215503552
  20. Maura Dougherty, BCBABehavior Analyst1215453444
  21. Hannah Dougherty-VonaBehavior Technician1548017205
  22. Jimmy DouglasProfessional Counselor1831670405
  23. Tia DouglasBehavior Technician1134099294
  24. Tiana Douglas GoeinsPhlebotomy Technician1669164109
  25. Kathleen Douglass, M.A., LCPCProfessional Counselor1679761290
  26. Dina DoutySpeech-Language Pathologist1629546254
  27. Kendall DouvilleClinical Social Worker1982201125
  28. Donnetta Dowdy, BSNRegistered Nurse1972994549
  29. Tanganyika DoweryBehavior Technician1053075051
  30. Natalie Dowgiewicz, PTPhysical Therapist1427349182
  31. Mary Dowling, LCSW-CClinical Social Worker1518168467
  32. Princess Dowling, REGISTERED NURSERegistered Nurse1982193025
  33. Erica DowningBehavior Technician1851043574
  34. Nailah DowningBehavior Technician1235832726
  35. Danielle Doyle, MDAnesthesiology Physician1063647998
  36. Jacqueline DoyleOccupational Therapist1861036915
  37. Shannon Doyle, LCSW-CClinical Social Worker1174292585
  38. Jillian Dozier, APRNNurse Practitioner1184420218
  39. Albiona DragidellaBehavior Technician1326706797
  40. Lorraine Dragonir, D.D.S.Dentist1699936021
  41. Patricia Drake, RNRegistered Nurse1316283781
  42. Shawntel Drake, LMTMassage Therapist1932038361
  43. Tara DrakeBehavior Technician1639973407
  44. Moor DrammehMental Health Counselor1619631967
  45. Mary Drass, M.D.Critical Care Medicine (Internal Medicine) Physician1245578426
  46. Angela Drayer, RNRegistered Nurse1922421403
  47. Megan Drew, APRN-BC, APNPPrimary Care Nurse Practitioner1043435100
  48. Angela Drewniak, CRNPAcute Care Nurse Practitioner1750539375
  49. Elaine Drewyer, LCSW-CClinical Social Worker1235637737
  50. Jovon Drone, LGPCMental Health Counselor1750097994

The largest Maryland cities

  1. Baltimore35,183
  2. Rockville14,353
  3. Bethesda7,245
  4. Silver Spring6,531
  5. Frederick3,981

All of Maryland →

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.