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 59 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. Aidan JiPharmacist1922556604
  2. Maxwell Ji, PT, DPT, CSCSPhysical Therapist1104500610
  3. Haibing Jiang, M.D., PH.D.Internal Medicine Physician1750711727
  4. Dionne Jimenez, LCPCProfessional Counselor1013332709
  5. Jeronimo Jimenez, MSOTR/LOccupational Therapist1497122980
  6. Ashley Jimenez ArguetaBehavior Technician1184463986
  7. Malini Joel, MDFamily Medicine Physician1316053382
  8. Elsie Joel-Morse, DDSDentist1306094644
  9. Jane Joffe, LCSW-CClinical Social Worker1841304300
  10. Gabriel John, OTR/LOccupational Therapist1912492190
  11. Mary JohnsContractor1861923559
  12. Marycynthiagrace Johnsen, LCPC, M.S. , NCCMental Health Counselor1376219287
  13. Alisha Johnson, LICSWPsychiatry Physician1417623877
  14. Alyssa Johnson, RNRegistered Nurse1700279395
  15. Amanda Johnson, RNRegistered Nurse1760813695
  16. Aniah JohnsonBehavior Technician1558159848
  17. Anisa Johnson, LCSW-CClinical Social Worker1790677565
  18. Antoine Johnson, DDSOral and Maxillofacial Surgery (Dentist)1679730709
  19. Beverly Johnson, LCSW-CClinical Social Worker1649406356
  20. Brittaney JohnsonBehavior Technician1669140851
  21. Brittany Johnson, LCPCCounselor1710656285
  22. Carsan JohnsonSocial Worker1841928926
  23. Catreece JohnsonBehavior Technician1356941934
  24. Collin JohnsonBehavior Technician1629879424
  25. Criag JohnsonBehavior Technician1346079217
  26. Danielle JohnsonBehavior Technician1396401659
  27. Deborah Johnson, PH.D.Psychologist1477759405
  28. Deja Johnson, RBTBehavior Technician1518823079
  29. Derrick JohnsonGeneral Practice Dentistry1598555310
  30. Diamond Johnson, M.S.Counselor1063206563
  31. Eanaja JohnsonBehavior Technician1700634029
  32. Elaine Johnson, PH.D.Psychologist1376075754
  33. Elyssa JohnsonBehavior Technician1013673631
  34. Floyd Johnson, NPAcute Care Nurse Practitioner1033340799
  35. Hollison Johnson, REGISTERED NURSERegistered Nurse1376902668
  36. Imani JohnsonBehavior Technician1033873302
  37. Ingrid JohnsonBehavior Technician1073121604
  38. Isaiah JohnsonBehavior Technician1073478087
  39. Jasmine JohnsonBehavior Technician1194456863
  40. Jasmine JohnsonBehavior Technician1871294108
  41. Jeanna Johnson, L.ACAcupuncturist1245601277
  42. Jessica Johnson, M.ED; BCBABehavior Analyst1184175069
  43. Jessica JohnsonBehavior Technician1033869201
  44. Kadisha JohnsonBehavior Technician1649837725
  45. Kali Johnson, RNFamily Nurse Practitioner1003796533
  46. Karen JohnsonClinical Social Worker1790794725
  47. Karen Johnson, P.T.Physical Therapist1558403667
  48. Karen Johnson, L.AC.,RNAcupuncturist1194933044
  49. Katelyn Johnson, RNRegistered Nurse1497294573
  50. Kayla JohnsonMarriage & Family Therapist1265124531

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.