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 103 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. Toni Robinson, RN, BSN, MBARegistered Nurse1336719483
  2. Tyler RobinsonProfessional Counselor1568258051
  3. Vallisha RobinsonBehavior Technician1578375820
  4. Yolanda Robinson, RNRegistered Nurse1932629821
  5. Amber Robinson BijouBehavior Analyst1992291199
  6. Shatia Robinson-BlaylockBehavior Technician1033674742
  7. Nyssa Robles, LCSW-CClinical Social Worker1750610820
  8. Sandra Robson, PTPhysical Therapist1669482899
  9. Elise Rochford, OTROccupational Therapist1760940456
  10. Marie Rock, RNRegistered Nurse1629486014
  11. Amber RodelaBehavior Technician1033917281
  12. Laural Rodgers, RBTBehavior Technician1770350647
  13. Erika Rodkey, LICSWClinical Social Worker1184078347
  14. Ada Guiselle Rodriguez, PSY.D.Clinical Psychologist1578889978
  15. Alejandro Rodriguez, M.D.Urology Physician1023182011
  16. Danielle RodriguezAssistant Behavior Analyst1710778154
  17. Ivanna RodriguezBehavior Technician1720792328
  18. Jennifer RodriguezBehavior Technician1225849797
  19. Kimberly Rodriguez, OTR/L, CLTOccupational Therapist1336867704
  20. Steven RodriguezBehavior Technician1790497972
  21. Yolanda RodriguezBehavior Technician1942147947
  22. Raquel Rodriguez-OcasioBehavior Technician1073280723
  23. Katharina Roesch, DPTPhysical Therapist1467235812
  24. Cristian RogersBehavior Technician1154116184
  25. Dylan RogersBehavior Analyst1700558996
  26. Keri RogersBehavior Analyst1114527223
  27. Lisa Rogers, RNRegistered Nurse1255841441
  28. Samantha Rogers, CRNP-PMHPsychiatric/Mental Health Nurse Practitioner1417679226
  29. Yvonne RogersProfessional Counselor1730628934
  30. Jennifer Rogofsky, PTGeriatric Physical Therapist1154651842
  31. Abigail RohmillerBehavior Technician1770456303
  32. Francisco Rojas, M.D.Obstetrics & Gynecology Physician1497762199
  33. Grecia RojasBehavior Technician1861294076
  34. Jonathan Rojas, NP-CFamily Nurse Practitioner1598312498
  35. Kerri Rokisky, PTPediatric Physical Therapist1518170588
  36. Darishea RollinsBehavior Analyst1932692092
  37. Kaiya RollinsBehavior Technician1568297836
  38. Nicole Rollins, BEHAVIOR TECHNICIANBehavior Technician1659055374
  39. Cynthia Roman, MS, OTR/LOccupational Therapist1295962132
  40. Sara RomaniPhysician Assistant1336928845
  41. Gena Romanow, M.D.Neurology Physician1366582280
  42. Rebecca Romelfanger, SLPASpeech-Language Assistant1962260455
  43. Cathy Romeo, N.P.,PH.D.Nurse Practitioner1962600445
  44. Jess Romeo, PMHNPPsychiatric/Mental Health Nurse Practitioner1821423211
  45. Mayeli RomeroBehavior Technician1518893783
  46. Alisson Romero AvalosBehavior Technician1790671972
  47. Stephen RomigPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1942659347
  48. Michael Ronan, PACSurgical Physician Assistant1255349940
  49. Fnu Roohi BaigBehavior Technician1386520476
  50. Madison RootBehavior Analyst1093339509

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.