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 51 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. Nalini Harry, FNP-BCFamily Nurse Practitioner1417461005
  2. Caroline Hart, O.D.Optometrist1538151907
  3. John HartMarriage & Family Therapist1578199279
  4. Jordan HartBehavior Analyst1467343855
  5. Joy HartClinical Social Worker1629484845
  6. Shantavia Hart-GreenBehavior Analyst1568195279
  7. Jill Hartman, PT, DPTPhysical Therapist1861959538
  8. Mary Hartman, L.AC.Acupuncturist1447506944
  9. Reanna HartsockBehavior Technician1689306060
  10. Adekemi Harvey, MDDermatology Physician1770803504
  11. Alexander HarvinBehavior Technician1437898509
  12. Karen Harvis, RN, MS, CS-PAdult Psychiatric/Mental Health Clinical Nurse Specialist1992223135
  13. Toni Hasan, OTR/LOccupational Therapist1679954671
  14. Nadeem Hashmi, MDNeonatal-Perinatal Medicine Physician1518097989
  15. Zeenat Hashmi, M.D.Family Medicine Physician1154512549
  16. Folasade HassanNursing Home Administrator1336989573
  17. Enola HastiinMental Health Counselor1114449386
  18. Anne Hasting, M.S., CCC-SLPSpeech-Language Pathologist1548495922
  19. Ellen Hatch, L.AC.Acupuncturist1760448419
  20. Rebecah HatchelBehavior Technician1568227346
  21. Trinity HatchettOccupational Therapist1053205583
  22. Faith HatefiBehavior Technician1679462345
  23. Juwaun HattonBehavior Technician1386598431
  24. Jaaska Hauser, APRNPsychiatric/Mental Health Nurse Practitioner1255712287
  25. Sheri Hawes, LCPCProfessional Counselor1376122754
  26. Toni HawkinsRegistered Nurse1104209998
  27. Tomeeka Hawthorne, RNRegistered Nurse1578076014
  28. Christina HaydenBehavior Technician1780529461
  29. Carly HayesAthletic Trainer1699124727
  30. Courtney Hayes, LGPCMental Health Counselor1952027260
  31. Donaisha HayesBehavior Technician1275352296
  32. John Hayes, PH.D.Family Psychologist1023224326
  33. Joshua HayesClinical Social Worker1285395525
  34. Madelia HayesRegistered Nurse1952785594
  35. Christine Haynes, R.N.Registered Nurse1720206410
  36. Lachell HaynesBehavior Technician1437046497
  37. Tricia Haynes, RNRegistered Nurse1790144087
  38. Takara Hayward, DPTPhysical Therapist1063646735
  39. Tainia HaywoodBehavior Technician1457943417
  40. Rodlyn HazelBehavior Technician1417614207
  41. Silvia Hazel, CRNPFamily Nurse Practitioner1407498256
  42. Shaniah HeardBehavior Analyst1902329527
  43. Erica HearnBehavior Technician1992529093
  44. Laura HeathRegistered Nurse1578930632
  45. Eric Hebron, LCSW-CClinical Social Worker1386762672
  46. Caroline Hedges, RNRegistered Nurse1477087377
  47. Ryan Heemann, LCPCProfessional Counselor1104209030
  48. Elizabeth Heetderks, ACNPAcute Care Nurse Practitioner1285941955
  49. Phyllis Heffner, M.D.Child & Adolescent Psychiatry Physician1083614424
  50. Stacey HeidtBehavior Technician1285576504

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.