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 476 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. Loletta OsborneMental Health Counselor1518775709
  2. Shannon Osborne, MDObstetrics & Gynecology Physician1730746280
  3. William Osborne, D.C.Chiropractor1649495151
  4. Leia Osbourne, RNRegistered Nurse1477092419
  5. Kendrah Osei, MDDiagnostic Radiology Physician1174102412
  6. Raphael Osei, M.D.Obstetrics & Gynecology Physician1316276074
  7. Barbara Osei-Sraha, PHARM.D.Pharmacist1194190777
  8. Achaw Osei-Wusu, MDInternal Medicine Physician1376645119
  9. Aisha Osei-ZuluBehavior Technician1932051539
  10. Abdul Oseini, MDTransplant Hepatology Physician1063617611
  11. Yvonne Oseiwe-Williams, MDEmergency Medicine Physician1538301676
  12. Ogochukwu Oseji, MDObstetrics & Gynecology Physician1497311948
  13. Tierra Oseji, M.D.Pediatrics Physician1437418670
  14. Julia Osemi-AkpamaPsychiatric/Mental Health Nurse Practitioner1164241907
  15. Adesuwa Osemwegie, LCPCCounselor1194503052
  16. Cassandra Osenburg, CRNPFamily Nurse Practitioner1801688122
  17. Greg Osgood, M.D.Orthopaedic Trauma Physician1932142932
  18. Ryan Osgueritchian, MDStudent in an Organized Health Care Education/Training Program1720880339
  19. James Oshida, M.D.Cardiovascular Disease Physician1861460008
  20. Alan Oshinsky, M.D.Otolaryngology Physician1205825890
  21. Emmanuel OshodiBehavior Technician1255176103
  22. Norah Osian, R,PHPharmacist1336442656
  23. Ewere Osian-Dugan, M.D.Psychiatry Physician1639494057
  24. Michael OsikomaiyaBehavior Technician1760264030
  25. Renata Osinovskaya, D.M.D.General Practice Dentistry1649449109
  26. Oluwadara Osinubi, MSN, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1134756794
  27. Anuoluwapo Osinusi, MDInfectious Disease Physician1396904314
  28. Jessika OsmanBehavior Technician1740998764
  29. Murat Osman, MDVascular & Interventional Radiology Physician1275160582
  30. Michael OsnardInternal Medicine Physician1780115956
  31. Gwendoline Osong, CRNP-PMHPsychiatric/Mental Health Nurse Practitioner1518767631
  32. Daniel Ospina Delgado, MDStudent in an Organized Health Care Education/Training Program1437097847
  33. Afua Ossei-Agyeman-Yeboah, NP, MSN, RNAcute Care Nurse Practitioner1447689567
  34. Diane Ossip, MDPsychiatry Physician1366687337
  35. Geneva OsteenPsychiatry Physician1548586530
  36. Stephanie Oster, RPH.Pharmacist1558121293
  37. Mohammad OstovanehStudent in an Organized Health Care Education/Training Program1790246601
  38. Rick Ostrander, EDDClinical Neuropsychologist1225077704
  39. Christian OstrowskiStudent in an Organized Health Care Education/Training Program1407796022
  40. Joseph-Venatius Osuagwu, MDPediatrics Physician1700845641
  41. Ngozi Osuagwu, CRNPNurse Practitioner1750612909
  42. Evans Osuji, MDStudent in an Organized Health Care Education/Training Program1508619081
  43. Valerie OsulaEmergency Medicine Physician1720510167
  44. Adeboye Osunkoya, M.D.Anatomic Pathology & Clinical Pathology Physician1003955030
  45. Ifedayo OsuntuyiPharmacist1376037630
  46. Mary OsunwaMedical-Surgical Registered Nurse1568002103
  47. Sanjeev Osuri, M.D.Anesthesiology Physician1619193547
  48. Claire OswaldOccupational Therapist1134862162
  49. Gretchen Oswald, MS, CGCGenetic Counselor (M.S.)1861539959
  50. Nadine Oswald, PA-CMedical Physician Assistant1558436436

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.