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 72 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. Lilliana LombardiBehavior Technician1518803402
  2. Sharon Londeree, FNPFamily Nurse Practitioner1649792698
  3. Dianne London, CRNPAcute Care Nurse Practitioner1942518824
  4. Karen Long, RNRegistered Nurse1023309150
  5. Katrina LongBehavior Technician1508339490
  6. Melissa Long, RNRegistered Nurse1659767754
  7. Michelle Long, LCPATProfessional Counselor1326654161
  8. Sydney LongBehavior Technician1144142894
  9. Lylisa Long- SuttonBehavior Technician1861161614
  10. Brittany LongmireBehavior Technician1568393627
  11. Susan Loomis, MS CCC-SLPSpeech-Language Pathologist1497129464
  12. Alejandra LopezRegistered Nurse1609251065
  13. Martin LopezBehavior Technician1346939824
  14. Carl Lord, M.D.Obstetrics & Gynecology Physician1063462349
  15. Katherine Lorenz, MAC LACAcupuncturist1821330911
  16. Marlyn Lorenzo, MDRheumatology Physician1639107097
  17. Sheila Lorimer, RN BSNRegistered Nurse1952717225
  18. Michelle LoryBehavior Technician1902474323
  19. Michelle Lott, RNRegistered Nurse1568138709
  20. Brandi Loughery Goodrich, RN IBCLCRegistered Nurse1144737131
  21. Christina LouiePharmacist1326499104
  22. Adhassa LouisBehavior Technician1699443655
  23. Milca LouisBehavior Technician1841952553
  24. Miriam Love, L.C.S.W-CClinical Social Worker1588770523
  25. Teresa Love, MS, RDRegistered Dietitian1497883755
  26. Vincent Love, LCSW-CClinical Social Worker1396810248
  27. Marcie Lovell, MSW LCSW-CMental Health Counselor1790187185
  28. Catherine Loverdi, RNRegistered Nurse1376019729
  29. Keith LovinRegistered Nurse1295694115
  30. Anna LovingBehavior Technician1699569459
  31. Margaret Lowenstein, CRNPFamily Nurse Practitioner1023382587
  32. Beth Lowenthal, PHARMD, MBAPharmacist1912502295
  33. Esther Lowery, LCMFTMarriage & Family Therapist1932447448
  34. Kirsten LoweryBehavior Technician1700745304
  35. Maria Lowery, RNRegistered Nurse1427449008
  36. Caroline Lowman, PHDClinical Child & Adolescent Psychologist1518846435
  37. Amy Lownes, PHARMDPharmacist1790156099
  38. Bianca LowryBehavior Technician1295625739
  39. Jennifer Lowry, RN, BSNRegistered Nurse1073991980
  40. Emily Loy, NPPediatric Nurse Practitioner1659151629
  41. Connor Lu, DDSGeneral Practice Dentistry1851224455
  42. Tamara Lubliner, LCSW-CClinical Social Worker1154459154
  43. Dominique LucasBehavior Technician1063921211
  44. Niyah LucasBehavior Technician1275372922
  45. Tonilee Lucchino, LCSW-C, RPTClinical Social Worker1821445545
  46. Stephen LuceBehavior Technician1871219451
  47. Daniel Ludlow, LAT, ATCAthletic Trainer1053977900
  48. Marilyn Ludwick, OTR/LPediatric Occupational Therapist1841634300
  49. Jesse Ludwig, LCPCMental Health Counselor1962054783
  50. David Luebbert, M.D.Family Medicine Physician1922419464

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.