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 34 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. Dannene Drummond, BCBABehavior Analyst1003257080
  2. Latoya DrummondBehavior Technician1093251027
  3. Cuiqiong DuFamily Nurse Practitioner1366120149
  4. Rajiv Dua, M.D.Family Medicine Physician1043326945
  5. Jennifer Duan, ODOptometrist1275796955
  6. Ana Duarte, CRNP-PMHPsychiatric/Mental Health Nurse Practitioner1790097913
  7. Giovanna DuarteBehavior Technician1104568955
  8. Maria DuarteBehavior Technician1134920937
  9. Josephine Dubon, PAPhysician Assistant1235638115
  10. Cameryn DuboseBehavior Technician1902537814
  11. Courtney DuboviBehavior Analyst1184355224
  12. Joy Dubrovich, PA CPhysician Assistant1609050855
  13. Marlon DucrepinBehavior Technician1174344170
  14. Crystal DucrosBehavior Technician1821640210
  15. Lynn Dudley, P.A.Medical Physician Assistant1316058084
  16. Patricia Dudley, LCPC, NCCProfessional Counselor1871132233
  17. Sara Dudley, M.D.Radiation Oncology Physician1043589880
  18. Angela Duffey, RNRegistered Nurse1689260952
  19. Margaret DuffyBehavior Technician1376241257
  20. Jacob Dugan, LCSW-CSocial Worker1427832021
  21. Julia DuganBehavior Technician1053207217
  22. Denaria DugginsBehavior Technician1194452094
  23. Richard Dulaney, LCPCMental Health Counselor1184199614
  24. Itallia DunbarBehavior Technician1679320394
  25. Sharon DunbarBehavior Technician1245109818
  26. Holly Duncan, AU.D.Audiologist1902215502
  27. Kate Duncan, LCPCMental Health Counselor1205371895
  28. Mason Dunham, M.D.Anesthesiology Physician1225485162
  29. Erin Dunkle, M.S., CCC-SLPSpeech-Language Pathologist1619058476
  30. Deborah Dunn, P.A.-CPhysician Assistant1124043427
  31. Trucphuong Denise DuongRegistered Nurse1720407927
  32. Cheryl Durant, MPTPhysical Therapist1083835466
  33. Paige DurborowBehavior Technician1881523413
  34. Regina Durso, LCSW-CClinical Social Worker1992254122
  35. Melissa Dutt McDermott, BCBA, LBA, NCCBehavior Analyst1174118814
  36. Mailynna Dutton, RNRegistered Nurse1508457508
  37. Anita Dworkin, PH.D.Psychologist1588602940
  38. Edward Dworkin, PH.D.Psychologist1811930068
  39. Sade DyceBehavior Technician1497272710
  40. Amy Dye, RNRegistered Nurse1336571934
  41. Taylor DyeBehavior Technician1083140875
  42. Cara DykeBehavior Technician1407721517
  43. Naomi DysonRegistered Nurse1699210435
  44. Tawanda DysonBehavior Technician1063147106
  45. Nadine Dzieketey, PTPhysical Therapist1083810295
  46. Anna Dziwulski, LCPCProfessional Counselor1033981113
  47. Wilma EadyRegistered Nurse1538575808
  48. Gillian EarlyBehavior Technician1285201673
  49. Ashley Eason, LCSWCSocial Worker1396140091
  50. Tawanda Eason-EvansBehavior Technician1679038988

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.