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 102 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. Millicent Rios, BCBA, LBABehavior Analyst1790177558
  2. Gabriela Rios-MartinezMental Health Counselor1477151538
  3. Madison RipleyBehavior Technician1043166150
  4. Naomi Riselsheimer, RNRegistered Nurse1356019251
  5. Nicholas Risko, MDEmergency Medicine Physician1780025700
  6. Tyler Rits, BS PSYCHOLOGYBehavior Analyst1255793188
  7. Sage RivardeBehavior Technician1184583460
  8. Lizbeth RivasBehavior Technician1154042240
  9. Elvys Rivas EcheverriaBehavior Technician1295514891
  10. Alexa RiveraBehavior Technician1073432514
  11. Erick RiveraBehavior Analyst1689550683
  12. Lauren Rivera, PTPhysical Therapist1831502400
  13. Mirian RiveraBehavior Technician1851245229
  14. Sadhia Rivera, OTOccupational Therapist1861616450
  15. Aisha Rivera Margarin, MDPublic Health & General Preventive Medicine Physician1366741365
  16. Nashali Rivera MartinezBehavior Technician1871217083
  17. Ana Rivera Ortiz, LMSWSocial Worker1619777331
  18. Katie Rivera SalgadoBehavior Technician1245185651
  19. Dylan RiveroBehavior Analyst1932615515
  20. Alyssa RiversBehavior Technician1003544248
  21. Naamon RiversBehavior Technician1932989514
  22. Natalie Rivers, PT, DPTPhysical Therapist1174062442
  23. Paula RiversSpeech-Language Pathologist1467922336
  24. Saychelle RiversBehavior Technician1518673649
  25. Ana Roa CuasBehavior Technician1023991080
  26. Breanna RoachFamily Nurse Practitioner1932050143
  27. Sara RoachPharmacist1366727141
  28. Shenell RoaryBehavior Technician1821721499
  29. Ashley RobersonMarriage & Family Therapist1457851479
  30. Ashanti RobertsBehavior Technician1659223139
  31. Lea RobertsBehavior Technician1184457962
  32. Oyinlola Roberts, DOPediatrics Physician1306473228
  33. Sara RobertsRegistered Nurse1033599345
  34. Tajah RobertsBehavior Technician1477414191
  35. Wesley RobertsBehavior Technician1457284671
  36. Jaiyla Robertson-SnoddyBehavior Technician1962396408
  37. Markisha RobinBehavior Technician1740063718
  38. Amy RobinsonRegistered Nurse1053878264
  39. Ashley RobinsonBehavior Technician1528738721
  40. Brian RobinsonBehavior Technician1003518382
  41. Comfort RobinsonHome Health Registered Nurse1952735599
  42. Corrin RobinsonBehavior Technician1457247769
  43. Dymond RobinsonBehavior Technician1982498028
  44. Gina Robinson, LCSW CSocial Worker1376688812
  45. Jennie Robinson, CRNPNurse Practitioner1043057078
  46. Joy RobinsonMental Health Counselor1033772934
  47. Karon RobinsonBehavior Technician1326965435
  48. Marie-Adelaide Robinson, PT, DPTPhysical Therapist1225887797
  49. Stephanie RobinsonBehavior Technician1336024264
  50. Tina RobinsonBehavior Technician1831035674

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.