NPPES file of Aug 9, 2026

Medical Physician Assistant in Pennsylvania

3,897 NPPES records list medical physician assistant with a practice address in Pennsylvania, 30 per 100,000 residents, the 4th highest rate of 51. Pittsburgh and Philadelphia have the most; each record links to the provider's NPI and the Pennsylvania license search. Page 52 of 78.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 363AM0700X · method

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

Pittsburgh has the most, 521

  1. Pittsburgh521
  2. Philadelphia503
  3. Allentown287
  4. Bethlehem101
  5. Lancaster92

Medical Physician Assistant records in Pennsylvania

  1. Elizabeth O'Brien, PACBensalem, PA 190201003119314
  2. Sean O'BrienWilliamsport, PA 177011205379310
  3. Shannon O'Brien, PAMeadville, PA 163351053744425
  4. Madeline O'Hara-Moffo, PA-CChester, PA 190131407916307
  5. Giulia O'Keeffe, PA-CPittsburgh, PA 152121124029525
  6. Michelle O'Malley Shahani, PA-CAllentown, PA 181031457734329
  7. Caroline O'Neil, PA-CPittsburgh, PA 152131710525258
  8. Collin O'Neil, PA-CLebanon, PA 170421588226039
  9. Lori O'Shaughnessy, CRNPMifflin, PA 170581922061852
  10. Courtney O'Sullivan, PA-CHanover, PA 173311093597445
  11. Rachel O'Toole, PA-CConnellsville, PA 154251114806346
  12. Breanna Ober, PA-CLititz, PA 175431366797938
  13. Amber ObrienWilliamsport, PA 177011063672152
  14. Jeanna Oburn, PA-CMechanicsburg, PA 170501992068605
  15. Kerri Odell, PA-CScranton, PA 185031952031874
  16. Gretchen Odonnell, PA CWyomissing, PA 196101376513275
  17. Marnie Odonnell, PACHarrisburg, PA 171121649264268
  18. Patrick Offi, PA-CPittsburgh, PA 152121528254158
  19. Brenda Offord, PA-CMonroeville, PA 151461376565598
  20. Julie Oja, PA-CMoosic, PA 185071548365166
  21. Guilene Ojikutu, PA-CCoatesville, PA 193201356450472
  22. Lorna Okletey, PA-C, MPHPhiladelphia, PA 191311871068684
  23. Katherine OlenickAllentown, PA 181031679048615
  24. Matthew Oleyar, PA-CDerry, PA 156271962178905
  25. Natalie Olivo, PA-CJefferson Hills, PA 150251306542378
  26. Karen Olshanskaya, PA-CYork, PA 174031376027888
  27. Marisa Olsommer, PA-CBartonsville, PA 183211285813931
  28. Carrie Olson, PAAllentown, PA 181031730456955
  29. Brianne Olszewski, PA-CPittsburgh, PA 152141609500479
  30. Kimberly Olving, PA-CBethlehem, PA 180151871865485
  31. Halee Onder, PA-CMars, PA 160461508851312
  32. Joshua Onder, PA-CPittsburgh, PA 152371831119833
  33. Joseph Ondercin, PHYSICIAN ASSISTANTPhiladelphia, PA 191241336269828
  34. Nneka Onianwah, PAPhiladelphia, PA 191321174705511
  35. Lisa OnoratoPhila, PA 191281114003951
  36. Courtney Opalacz, PA-CYork, PA 174021487938320
  37. Jilda Opczynski, PA-CWynnewood, PA 190961073824132
  38. Abigail Opiela, PA-CPittsburgh, PA 152031245789486
  39. Dana OrdonsPittsburgh, PA 152371710200324
  40. Ryan OriePittsburgh, PA 152131023315850
  41. Kerri Orr, PA-CScranton, PA 185031154807865
  42. Jeremy Ortiz, PALewisberry, PA 173391538548334
  43. Jessy Osborne, PA-CButler, PA 160011548457864
  44. Mikayla Osorio, PA-CPhiladelphia, PA 191301932855822
  45. Abigail Ostertag, PA-CWyomissing, PA 196101477716140
  46. Tiffany Ostroski, PA-CBloomsburg, PA 178151003075466
  47. Katlin OswaldAllentown, PA 181031194200261
  48. Jennifer Ou, PAPhiladelphia, PA 191481225565658
  49. Caitlin Ouellette, PA-CPhiladelphia, PA 191041578276481
  50. Elizabeth Outlaw, PA-CPhiladelphia, PA 191071184076333

Source: CMS NPPES, primary taxonomy 363AM0700X: records by practice city and the list of records, file of Aug 9, 2026.

Pennsylvania ranks 4 of 51 per resident

  1. Alaska34
  2. Connecticut31
  3. District of Columbia31
  4. Pennsylvania30
  5. Montana24
  6. Colorado22
  7. 50 states and D.C.12

Source: CMS NPPES, primary taxonomy 363AM0700X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

80.1% of these records appear in a Medicare file, against 74.0% 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. Pennsylvania80.1%
  2. United States74.0%

Medical Physician Assistant records in Pennsylvania, measured

  • In a Medicare file3,120 of 3,897 · 80.1% here, 74.0% nationally
  • In the CMS Doctors and Clinicians file2,468 · 63.3% here, 54.5% nationally
  • Not updated in five years or more2,054 · 52.7% here, 54.7% nationally
  • Median graduation year2015 · the 2,467 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 363AM0700X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

3,897 NPPES records list medical physician assistant (363AM0700X) as their primary taxonomy with a practice address in Pennsylvania: 30 per 100,000 residents against 12 nationally (50 states and D.C.). Pittsburgh has 521 of them (13%).

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. New York3,670
  2. California3,376
  3. Florida2,776
  4. Texas2,146

States with a similar rate per 100,000

  1. District of Columbia30.9
  2. Connecticut31.5
  3. Alaska34.1
  4. Montana23.7

The largest states

  1. New York3,670
  2. California3,376
  3. Florida2,776
  4. Texas2,146
  5. North Carolina1,352

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.