NPPES file of Aug 9, 2026

Internal Medicine Physician in Pennsylvania

7,300 NPPES records list internal medicine physician with a practice address in Pennsylvania, 56 per 100,000 residents, the 11th highest rate of 51. Philadelphia and Pittsburgh have the most; each record links to the provider's NPI and the Pennsylvania license search. Page 81 of 146.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207R00000X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Philadelphia has the most, 1,855

  1. Philadelphia1,855
  2. Pittsburgh750
  3. Allentown218
  4. Harrisburg184
  5. York164

Internal Medicine Physician records in Pennsylvania

  1. Amanda Marchica, DOBryn Mawr, PA 190101972948537
  2. Samuel Marcotullio, DOPittsburgh, PA 152231285633222
  3. Hillary Marcus, M.D.Lower Gwynedd, PA 190021891892352
  4. Marjorie Marenberg, M.D.Wayne, PA 190871902830912
  5. Aaron Mares, M.D.Pittsburgh, PA 152031073705513
  6. Usha Marfatia, MDWarminster, PA 189741235109208
  7. Susanna Margaryan, MDEphrata, PA 175221225221930
  8. Patricia Margetas, D.O.York, PA 173151346475340
  9. Andrew MargolisDelmont, PA 156261821033846
  10. Stephen Margolis, MDWyncote, PA 190951679523724
  11. Natalie MargulesPhiladelphia, PA 191071659638294
  12. Gregorio Mariano, M.D.Altoona, PA 166021922039312
  13. Lawrence Marinari, MDBryn Mawr, PA 190101669682449
  14. Edward Marines, DOEast Norriton, PA 194031750066940
  15. Jenna Marinock, MDPhiladelphia, PA 191401740850395
  16. Mina Mark, M.D.Philadelphia, PA 191441588999585
  17. William Mark, M.D.Phoenixville, PA 194601396955522
  18. Melina Marmarelis, M.D.Philadelphia, PA 191041346688793
  19. Aimee Marmol, M.D.Bethel Park, PA 151021760474183
  20. Jeffrey Maron, DOPhiladelphia, PA 191481295775963
  21. Riley Marotta, DOPhiladelphia, PA 191411619652674
  22. Dana Marrero, M.D.Wynnewood, PA 190961407081748
  23. Juan Marrero Berrios, MDEaston, PA 180451427671163
  24. Martye Marshall, MDWest Chester, PA 193801841253648
  25. Samantha Marshall, MDPhiladelphia, PA 191411851086094
  26. V Marshall, DOPhila, PA 191491952341992
  27. Stephen Martell, DOWynnewood, PA 190961609398478
  28. Jeffrey Marteslo, MDAllentown, PA 181031053765537
  29. George Martich, MDPittsburgh, PA 152611528032323
  30. Christopher Martin, MDPhoenixville, PA 194601376625418
  31. Edmund Martin, M.D.Philadelphia, PA 191111932139888
  32. Fredric Martin, M.D.Pittsburgh, PA 152241417972316
  33. Robert Martin, MDLancaster, PA 176031114921186
  34. Caitlin Martin Klinger, MDPhiladelphia, PA 191041629396700
  35. Gregory MartinekAltoona, PA 166011205802857
  36. Alexandre Martinez, M.D.Pittsburgh, PA 152431003553702
  37. Santos MartinezEaston, PA 180451942000252
  38. Steven MartinezPittsburgh, PA 152131356976294
  39. Jose Martinez Manzano, MDPhiladelphia, PA 191411255956231
  40. Gianna Martini, DOWynnewood, PA 190961568356905
  41. Camille Martorella, MDPhiladelphia, PA 191401477346070
  42. Rohit Maruthi, MDPhiladelphia, PA 191401750907739
  43. Julie Marvania, MDScranton, PA 185101437244100
  44. Jennifer Marx, MDPhiladelphia, PA 191401295526093
  45. Natalie Marzec, M.D.Philadelphia, PA 191071902065469
  46. Thomas Marzili, DOPhiladelphia, PA 191311558981597
  47. Kimberly Mascia, MDErie, PA 165501447251525
  48. Michael Mash, MD LLCNorristown, PA 194011669562583
  49. Gregory Maslak, M.D.Philadelphia, PA 191021720439235
  50. Lisa Maslankowski, MDPhiladelphia, PA 191231750300240

Source: CMS NPPES, primary taxonomy 207R00000X: records by practice city and the list of records, file of Aug 9, 2026.

Pennsylvania ranks 11 of 51 per resident

  1. Delaware58
  2. Illinois58
  3. Michigan57
  4. Pennsylvania56
  5. Vermont50
  6. Oregon50
  7. 50 states and D.C.44

Source: CMS NPPES, primary taxonomy 207R00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

77.9% of these records appear in a Medicare file, against 78.7% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. Pennsylvania77.9%
  2. United States78.7%

Internal Medicine Physician records in Pennsylvania, measured

  • In a Medicare file5,684 of 7,300 · 77.9% here, 78.7% nationally
  • In the CMS Doctors and Clinicians file4,212 · 57.7% here, 61.4% nationally
  • Not updated in five years or more4,115 · 56.4% here, 55.4% nationally
  • Median graduation year2008 · the 4,208 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207R00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

7,300 NPPES records list internal medicine physician (207R00000X) as their primary taxonomy with a practice address in Pennsylvania: 56 per 100,000 residents against 44 nationally (50 states and D.C.). Philadelphia has 1,855 of them (25%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. Illinois7,238
  2. Massachusetts6,825
  3. Michigan5,735
  4. Texas9,175

States with a similar rate per 100,000

  1. Delaware58.1
  2. New York61.7
  3. Vermont50.4
  4. American Samoa50.1

The largest states

  1. California17,696
  2. New York12,067
  3. Florida10,151
  4. Texas9,175
  5. Illinois7,238

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record is not a license.

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.