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 466 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. Robert O'Toole, M.D.Orthopaedic Trauma Physician1821037458
  2. Atharv OakStudent in an Organized Health Care Education/Training Program1083419907
  3. Atmaja OakPhysical Therapist1659805240
  4. Jonathan Oakes, MDObstetrics & Gynecology Physician1861700668
  5. Kathryn Oakjones, C.R.N.P.Adult Health Nurse Practitioner1235182734
  6. Christopher Oakley, M.D.Neurology with Special Qualifications in Child Neurology Physician1710155064
  7. Judith Oakley, CRNPPediatric Nurse Practitioner1801810023
  8. Andie OatesStudent in an Organized Health Care Education/Training Program1619816063
  9. Eniyah OatesBehavior Technician1629926175
  10. Marne OatesBehavior Technician1285410043
  11. Faith OatmanBehavior Technician1104748482
  12. Eugene Obah, M.D.Internal Medicine Physician1760429922
  13. Zainab Obaidi, M.DNephrology Physician1891102505
  14. Abiola Obatuase, NPFamily Nurse Practitioner1679086813
  15. Omowunmi Obayanju, PTAPhysical Therapy Assistant1396031563
  16. Edward Obazee, M.D.Specialist1194772905
  17. Hasan ObeidatStudent in an Organized Health Care Education/Training Program1821845959
  18. Maryse Obeissant, RNRegistered Nurse1184013823
  19. Mercy ObengPsychiatric/Mental Health Nurse Practitioner1194462929
  20. Ophelia Obeng, CRNACertified Registered Nurse Anesthetist1811567381
  21. Samuel Obeng, PHARMDPharmacotherapy Pharmacist1932893518
  22. Eugene Obeng-AppiahPhysician Assistant1417829755
  23. Gideon OberioPsychiatric/Mental Health Nurse Practitioner1447951330
  24. Anastasia ObernbergerBehavior Technician1336005222
  25. Anne Obi, RN, CRNPFamily Nurse Practitioner1972550713
  26. Amuche ObiajuluBehavior Technician1316760440
  27. Ndidi Obichere, D.OFamily Medicine Physician1124373642
  28. Sandra ObidiegwuBehavior Technician1578292959
  29. Olaitan ObidiranFamily Nurse Practitioner1366206062
  30. Chinemerem ObiechefuBehavior Technician1154058113
  31. Maureen ObiefulePsychiatric/Mental Health Nurse Practitioner1891614459
  32. Michael Obiefune, MDFamily Medicine Physician1073552881
  33. Obinna ObiejembaPsychiatric/Mental Health Nurse Practitioner1992055271
  34. Nkese ObihBehavior Technician1366396293
  35. Victoria ObikweluPharmacist1457992190
  36. Favour ObimbaBehavior Technician1720905128
  37. Stephanie ObimgbaBehavior Technician1700570603
  38. Chukwuka ObiofumaStudent in an Organized Health Care Education/Training Program1861134041
  39. Nkiruka Obioha, M.DFamily Medicine Physician1073650024
  40. Ifeoma Obioha-OffodilePharmacist1952707317
  41. Ikechukwu Obiora, CRNP-PMHPsychiatric/Mental Health Nurse Practitioner1598418956
  42. Osose ObohStudent in an Organized Health Care Education/Training Program1700465283
  43. Darius Obrady, PTAPhysical Therapy Assistant1831753748
  44. Donna ObrienRegistered Nurse1083803803
  45. Thomas Obrien, M.D.Neonatal-Perinatal Medicine Physician1912946765
  46. Pamela Obst-Buckner, PAPhysician Assistant1568651651
  47. Lauren Obusek, LMSWClinical Social Worker1548090095
  48. Selin Ocal, MDStudent in an Organized Health Care Education/Training Program1336830512
  49. Mark Raymund OcampoPhysical Therapist1962648816
  50. Velda Ocasio Ramirez, MDPediatric Pulmonology Physician1982157855

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.