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 403 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. Laura Mastella, CRNPAdult Health Nurse Practitioner1093714438
  2. Stephen Mastella, DMDGeneral Practice Dentistry1144248139
  3. Susan Mastellone, DOEmergency Medicine Physician1255379822
  4. Ashley Masten, LCSW-CClinical Social Worker1821468182
  5. Vidisha MasterStudent in an Organized Health Care Education/Training Program1407427958
  6. Breanna MastersRegistered Dietitian1619365517
  7. Mary Masterson, P.A.Physician Assistant1982654893
  8. Aikaterini Mastoropoulou, MDStudent in an Organized Health Care Education/Training Program1528708807
  9. Orlando Mastrap, RNRegistered Nurse1871910638
  10. Vianca Masucci, MDInternal Medicine Physician1245813781
  11. Sarah MasurBehavior Technician1780568386
  12. Jonaphine Rae Mata, MDInternal Medicine Physician1982282836
  13. Nicholas Mata, MDPain Medicine (Physical Medicine & Rehabilitation) Physician1750736658
  14. Ayah Matar, MDStudent in an Organized Health Care Education/Training Program1902747892
  15. Dany Matar, BAStudent in an Organized Health Care Education/Training Program1073475018
  16. Daniel MatasicStudent in an Organized Health Care Education/Training Program1023691730
  17. Fatimah MateenBehavior Technician1982419537
  18. Abigail MateoHealth Educator1215637533
  19. Vanessa Mateo, LGPCProfessional Counselor1083436380
  20. Dulce Mateo-Burgos, LCSW-CClinical Social Worker1619352747
  21. Joshua MateriStudent in an Organized Health Care Education/Training Program1124665765
  22. Elizabeth Matesa, P.A.Surgical Physician Assistant1659776987
  23. Nedelijko MatesicObstetrics & Gynecology Physician1205896891
  24. Matthew MathaiStudent in an Organized Health Care Education/Training Program1720934169
  25. Stephen Mathai, MD MHSPulmonary Disease Physician1235242314
  26. Sukhmani MatharuPharmacist1225381585
  27. Gerard Mathelier, M.D.Anesthesiology Physician1497149686
  28. Pegi Matheny, RDRegistered Dietitian1285030031
  29. Linda Mathers, RPHPharmacist1194313916
  30. Alexander Mathew, MD PHDStudent in an Organized Health Care Education/Training Program1346930948
  31. Jocelyn MathewStudent in an Organized Health Care Education/Training Program1023816139
  32. Nidhi Mathew, MDStudent in an Organized Health Care Education/Training Program1043011133
  33. Sabrina Mathew, PA-CPhysician Assistant1831615020
  34. Seema Mathew, M.D.Anatomic Pathology & Clinical Pathology Physician1427192764
  35. Seenia Mathew, CRNACertified Registered Nurse Anesthetist1144686791
  36. Christine Mathews, CSC-ADAddiction (Substance Use Disorder) Counselor1447569983
  37. Christopher Mathews, C.R.N.A.Certified Registered Nurse Anesthetist1396153946
  38. Herbert MathewsPharmacotherapy Pharmacist1679576086
  39. Holly Mathews, CPNP-PCPediatric Nurse Practitioner1417423914
  40. Lena Mathews, MDCardiovascular Disease Physician1669600722
  41. Lesley Mathews, MSN FNPCNurse Practitioner1295724227
  42. Michaela Mathews, MDOphthalmology Physician1447215470
  43. Tara Mathews, PH.DClinical Child & Adolescent Psychologist1528391737
  44. Kathleen Mathey, M.D.Family Medicine Physician1366547309
  45. Marlina Mathi, RNRegistered Nurse1255950580
  46. Kay Mathias, CNNPNeonatal Nurse Practitioner1437215381
  47. Kristen MathiasRheumatology Physician1962963066
  48. Mignot MathiasPhysician Assistant1942027057
  49. Trevor Mathias, MD, PHDStudent in an Organized Health Care Education/Training Program1780444158
  50. Robert Mathieson, M.D.Gastroenterology Physician1982701959

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.