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 87 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. Sharon Nelson, D.D.SGeneral Practice Dentistry1144526245
  2. Katherine NerudBehavior Analyst1932794724
  3. Neil Nery, DPTPhysical Therapist1598789802
  4. Samantha Nesbeth, APRN, AGPCNP-CNurse Practitioner1437694726
  5. Tori Ness-GleasonBehavior Technician1205428950
  6. Reginald Nettles, PHDClinical Psychologist1639342348
  7. Stephanie Neukum, M.D.Neurology Physician1033184734
  8. Dara Neuman-Sunshine, MDAllergy Physician1588869911
  9. Kaley NewBehavior Analyst1770191108
  10. Antoinette Newman, M.D.Hospice and Palliative Medicine (Internal Medicine) Physician1902338569
  11. Tia NewmanHealth Educator1457158172
  12. Kristina NewsomeBehavior Technician1164197752
  13. Frank Nezu, M.D.Urology Physician1770658437
  14. Christine Olive Ngo MbengNurse's Aide1528765336
  15. Gerard NguediMental Health Counselor1548931942
  16. Varoline NgumBehavior Technician1821791799
  17. Angelique NguyenPharmacist1467054411
  18. Cam-Van Nguyen, PHARM.D.Pharmacist1861588584
  19. Kai Nguyen, D.C.Chiropractor1174752844
  20. Katrina NguyenBehavior Analyst1639682735
  21. Kim-Khanh Nguyen, D.OM, L.AC., DIPL.OMAcupuncturist1669839981
  22. Leilani Nguyen, LCSW-CClinical Social Worker1033982426
  23. Linda NguyenRegistered Nurse1124431820
  24. Mai Chi Nguyen, M.D.Pulmonary Disease Physician1679538987
  25. Michelle Nguyen, MDHospice and Palliative Medicine (Family Medicine) Physician1013371913
  26. Jason Ni, PHARM. D.Pharmacist1871141192
  27. Kera Nichol, CRNPNurse Practitioner1881827640
  28. Elizabeth Nichols, MDRadiation Oncology Physician1396903761
  29. Karyn Nicholson, RNRegistered Nurse1093010753
  30. Norman NicholsonPharmacist1477980993
  31. Stacy Nicholson, D.C.Rehabilitation Chiropractor1508923970
  32. Felicia Nicholsonbrown, M.D.Family Medicine Physician1528128345
  33. Darneira NickensBehavior Technician1356120430
  34. Melissa Nickols, PA-CPhysician Assistant1396238499
  35. Katherine NicodemusBehavior Technician1346040532
  36. Phillip Nicolas, D.C.Chiropractor1083747810
  37. Leila NielsenBehavior Technician1093479693
  38. Jamie Nieto, RNRegistered Nurse1538631916
  39. Josephine NievesBehavior Technician1912661638
  40. Kabou NignanProfessional Counselor1104482686
  41. Lucas Nikkel, M.D.Orthopaedic Surgery Physician1023384997
  42. Lynne Nikolsky, R.N.Registered Nurse1558705418
  43. Tingting Niu, PA-CPhysician Assistant1588638274
  44. Delphine NjangCase Manager/Care Coordinator1275350951
  45. Oliver Njong, LCSW-CClinical Social Worker1518849553
  46. Leah Njuguna, RNRegistered Nurse1629669510
  47. Nazarus NkongjowhCase Manager/Care Coordinator1376376947
  48. Amy Nobil, M.S., CCC-SLPSpeech-Language Pathologist1528537669
  49. Teri NoferMassage Therapist1619387669
  50. Elizabeth NohBehavior Technician1992621916

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.