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 6 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. Jennifer Appleby, RN, CDEDiabetes Educator Registered Nurse1457786493
  2. Dolly Applegate, LCSW-CClinical Social Worker1518098797
  3. Marc Applestein, M.D.Urology Physician1679511620
  4. Fedeline Appolon, LCPC, NCCProfessional Counselor1578174900
  5. Duane Archer, DDS, MPHDentist1518186493
  6. Jennifer Arcila, CRNACertified Registered Nurse Anesthetist1801291372
  7. Katherine ArciniegaBehavior Technician1619631199
  8. Jessica Arcoraci, RN BSNRegistered Nurse1336530906
  9. Erica Ardinger, LCSW-CSocial Worker1275192700
  10. Olivia ArdreyBehavior Technician1811813314
  11. Emma ArellanoBehavior Technician1407553118
  12. Alexander Arevalo, M.ED, BCBABehavior Analyst1386241750
  13. Elizabeth Argo-WilbanksBehavior Technician1609353770
  14. Daniela ArguetaBehavior Technician1245910876
  15. Steven AriasBehavior Technician1235024498
  16. Emely Arias SortoBehavior Technician1528945797
  17. Julissa Arias-LopezBehavior Analyst1831703909
  18. Maria Arini, DPTPhysical Therapist1063790707
  19. Ava ArmstrongBehavior Technician1104586569
  20. Latonya Armstrong, RN, MSNRegistered Nurse1134574320
  21. Emily ArndtsOccupational Therapist1275195745
  22. Darrilynne Arnelle-Mazyck, M.D.Pediatrics Physician1336291384
  23. Sarah Arnold, MDFamily Medicine Physician1447222542
  24. Tiffanie ArnoldBehavior Technician1619837218
  25. Carrie ArnsbergerRegistered Nurse1336554757
  26. Vimala Arputham, RNRegistered Nurse1053829804
  27. Amber ArringtonBehavior Technician1780460337
  28. Stephanie Arseneault, APRNFamily Nurse Practitioner1790175032
  29. Meaghan Arsola, M.S.PSY, BCBA, LBABehavior Analyst1881355501
  30. Edna Asamany, REGISTERED NURSERegistered Nurse1568914315
  31. Abena Asamoah, RNRegistered Nurse1750759734
  32. Elsie Asare, NPNurse Practitioner1528356821
  33. Nicole Asbahr, L.ACAcupuncturist1669947008
  34. Eissa Asemani, M.D.Anesthesiology Physician1770550329
  35. Kudirat AsemotaBehavior Technician1093664138
  36. Riffat Ashai, MDPsychiatry Physician1003857038
  37. Samara AshbyBehavior Technician1124891056
  38. Kevin Asher, DDSOral and Maxillofacial Surgery (Dentist)1043372188
  39. Lisa Ashton, P.A.C.Physician Assistant1619088325
  40. Sharay AshtonBehavior Technician1386466993
  41. Uchenna AsiegbuBehavior Technician1578153987
  42. Nebrea AskewBehavior Technician1700697828
  43. Momina AslamPhysician Assistant1659182491
  44. Nadeem AslamStudent in an Organized Health Care Education/Training Program1558642504
  45. Princess AslamLactation Consultant (Registered Nurse)1710492921
  46. Eureka Asli, RNRegistered Nurse1457744351
  47. Shemicka Asom, CRNPFamily Nurse Practitioner1982025375
  48. Ann Aspnes, PH.D.Psychologist1386886893
  49. Ghadeer AssamawyBehavior Technician1285236364
  50. Patricia Assan, M.D.Child & Adolescent Psychiatry Physician1114086972

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.