NPPES file of Aug 9, 2026

Doctors and health care providers in Baltimore, MD

35,183 individual NPPES records list a practice address in Baltimore, 1st of 284 Maryland cities. The largest group is students in training: 4,028, 11% of the city's records, against 4% across Maryland. Page 464 of 704.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

The 8 largest groups in Baltimore

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

Baltimore in Maryland

  • Rank in Maryland1st of 284 cities by records
  • Share of the state22.1% of Maryland's records
  • Specialties present25 or more taxonomy codes
  • Top three groups27.1% of all records
  • Students in training rank1st of the 10 Maryland cities with the most

Compared with Maryland as a whole, Baltimore has 3.2× the state's share of student in an organized health care education/training program records and 0.64× its share of professional counselor records.

Providers in Baltimore, alphabetically

  1. Sarah Nyelenkeh, CRNPFamily Nurse Practitioner1447070149
  2. Malena NygaardStudent in an Organized Health Care Education/Training Program1538862735
  3. Aoibhinn Nyhan, MDAnesthesiology Physician1588196737
  4. Daniel Nyhan, M.D.Anesthesiology Physician1972543510
  5. Sinead Nyhan, MDCritical Care Medicine (Anesthesiology) Physician1558704064
  6. Gary Nyman, M.D.Pain Medicine (Psychiatry & Neurology) Physician1396883278
  7. Paul Nyquist, M.D., M.P.H.Neurology Physician1467408351
  8. Myaing Nyunt, M.D.Student in an Organized Health Care Education/Training Program1366580250
  9. Francisca Nzeke, MS CANDIDATEPastoral Counselor1942487988
  10. Chukwuemeka Nzelibe, PHARM.DPharmacist1811107113
  11. Marie-Claude Nzonlie Lowe, DDSDentist1407321029
  12. Christine O Connor, MDGynecologic Oncology Physician1003839267
  13. Ainsley O Garro, P.A.Physician Assistant1841404720
  14. Caitlin O'Brien, M.D.Critical Care Medicine (Anesthesiology) Physician1023332087
  15. Danielle O'Brien, PA-CPhysician Assistant1366040362
  16. Heather O'BrienSpecialist1851522106
  17. Jennifer O'BrienBehavior Analyst1497423925
  18. Jessica O'Brien, P.A.-C.Physician Assistant1902204340
  19. Jessica O'Brien, PHDPsychologist1982263125
  20. John O'Brien, MSWClinical Social Worker1740394477
  21. Katherine O'Brien, M.D.Pediatrics Physician1447297478
  22. Kerry O'Brien, CRNPPsychiatric/Mental Health Nurse Practitioner1477017614
  23. Lindsay O'Brien, MS CCC-SLPSpeech-Language Pathologist1336435569
  24. Maureen O'Brien, LCPCProfessional Counselor1366009086
  25. Patricia O'Brien, D.D.S.General Practice Dentistry1154531358
  26. Anne Marie O'Broin Lennon, MD PHDGastroenterology Physician1881831345
  27. Claire O'Connell, PA-CPhysician Assistant1831853472
  28. Emily O'Connell, CRNACertified Registered Nurse Anesthetist1881944023
  29. Emily O'ConnellStudent in an Organized Health Care Education/Training Program1134081060
  30. Jeanne O'Connell, M.DEmergency Medicine Physician1336185644
  31. Julia O'Connell, OTR/LOccupational Therapist1205521713
  32. Kaelin O'ConnellInternal Medicine Physician1891226213
  33. Stephanie O'Connell, LCSW-CClinical Social Worker1649661273
  34. Tierney O'Connell, CRNACertified Registered Nurse Anesthetist1508195215
  35. Brianna O'Connor, LCSW-CClinical Social Worker1720595093
  36. David O'Connor, PH.D.Clinical Psychologist1629176318
  37. Dawn O'Connor, RNInfusion Therapy Registered Nurse1356018113
  38. Delaney O'Connor, MS, ATCAthletic Trainer1326971839
  39. James O'Connor, M.D.Surgical Critical Care Physician1619904455
  40. Julia O'Connor, PHDIntellectual & Developmental Disabilities Psychologist1023137999
  41. Kevin O'Connor, MD, PHDStudent in an Organized Health Care Education/Training Program1265234413
  42. Sean O'Connor, D.M.D.Dentist1912387333
  43. William O'Connor, MDStudent in an Organized Health Care Education/Training Program1336999283
  44. Mario O'Connor Cordova, MDStudent in an Organized Health Care Education/Training Program1063350866
  45. Elizabeth O'Conor, AG-ACNPSurgery Physician1255897567
  46. Katie O'ConorStudent in an Organized Health Care Education/Training Program1528423977
  47. Katherine O'DeaBehavior Technician1215654835
  48. Alice O'Donnell, LCSW.-CClinical Social Worker1548440894
  49. Caitlin O'DonnellStudent in an Organized Health Care Education/Training Program1790477727
  50. Calvin O'DonnellStudent in an Organized Health Care Education/Training Program1275397747

The largest Maryland cities

  1. Rockville14,353
  2. Bethesda7,245
  3. Columbia6,690
  4. Silver Spring6,531
  5. Frederick3,981

All of Maryland →

How to read this directory

Baltimore, Maryland appears in the CMS National Plan and Provider Enumeration System with 35,183 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 Baltimore - 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 Baltimore 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 Baltimore is weighted toward Student in an Organized Health Care Education/Training Program (4,028 clinicians, followed by Behavior Technician with 3,602 and Clinical Social Worker with 1,917). 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, Baltimore reports roughly 569.3 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 Baltimore practice address, a coverage gap Baltimore patients typically fill by traveling to a larger nearby hub.

For Baltimore 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 Baltimore, MD?

There are 35,183 registered healthcare providers in Baltimore, MD, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Baltimore?

The most common specialties in Baltimore are Student in an Organized Health Care Education/Training Program, Behavior Technician, Clinical Social Worker, Internal Medicine Physician, Physician Assistant. Student in an Organized Health Care Education/Training Program has the most providers with 4,028.

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.