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 13 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. Valerie Blanke, RNRegistered Nurse1073192811
  2. Marie-Gabrielle BlassouBehavior Technician1841778792
  3. Gary Blechman, M.D.Neonatal-Perinatal Medicine Physician1215982392
  4. Connie Blizzard, PSY.D.Clinical Psychologist1417142290
  5. Arnold Block, P.HDClinical Child & Adolescent Psychologist1508913542
  6. Christine Bloom, R.N.Registered Nurse1225257066
  7. Darlene Bloom, OTR/LOccupational Therapist1215494976
  8. Helen BloomBehavior Technician1881472199
  9. Matthew Bloom, DPTPhysical Therapist1952253346
  10. James Blucher, LCPCProfessional Counselor1871139790
  11. Brianna BlueBehavior Analyst1164274874
  12. Amy BlumOccupational Therapist1639741762
  13. Julie Blumenfeld, D.D.S.Pediatric Dentistry1720373947
  14. Kevin Blumenthal, MDUrology Physician1215182662
  15. Elizabeth BlumerProfessional Counselor1811082134
  16. Rose Blynn, RNRegistered Nurse1255095113
  17. Sharie BlytheRegistered Nurse1780113183
  18. George BoakyeBehavior Technician1265242184
  19. Jakaila BoatengBehavior Technician1912654997
  20. Emmanuel Boateng-GyabahBehavior Technician1548994536
  21. Lynaugh BobstBehavior Technician1013655752
  22. Hilary Boetsch, D.C.Chiropractor1265853394
  23. Jenell Bogan, RNRegistered Nurse1972088680
  24. Lauren BoggsBehavior Technician1427799436
  25. Amber Bokhari, PA-CPhysician Assistant1255807228
  26. Fende Bokossah, RNRegistered Nurse1174088009
  27. Mariana Bolanos RamirezBehavior Technician1255147518
  28. Hanya BolerBehavior Technician1679347041
  29. Kaylee BolgerProfessional Counselor1164396669
  30. Jessica BollingerBehavior Analyst1508405168
  31. Maryam BoloukiBehavior Analyst1073271144
  32. Jeanne Bolton, PH.D.Clinical Psychologist1760601181
  33. Michelle Bombico, OTROccupational Therapist1619183373
  34. Cornelius BomboBehavior Technician1609680172
  35. Natasha BondBehavior Technician1851997050
  36. Nathaniel BondBehavior Technician1578413217
  37. Shalitta BondBehavior Technician1699562009
  38. Lauren Bondroff, LGPCMental Health Counselor1184441404
  39. Cara BonelliSocial Worker1699548545
  40. Caly BonesMental Health Counselor1982555629
  41. Joa Bongiorni, RNRegistered Nurse1487014759
  42. Nivia Bonilla CardenasBehavior Technician1821959263
  43. Raven BooherBehavior Technician1578365425
  44. Sue BookerBehavior Technician1780300269
  45. Vanessa BookerBehavior Technician1073284428
  46. Jomesa BooneHome Health Aide1174095269
  47. Vivian Boone, RNRegistered Nurse1801497730
  48. Amy Booth, FNPFamily Nurse Practitioner1275984858
  49. Lisa BoothBehavior Technician1447755194
  50. Nodine BoothePsychiatric/Mental Health Nurse Practitioner1730883554

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.