NPPES file of Aug 9, 2026

Specialist in Pennsylvania

2,031 NPPES records list specialist with a practice address in Pennsylvania, 16 per 100,000 residents, the 15th highest rate of 51. Pittsburgh and Philadelphia have the most; each record links to the provider's NPI and the Pennsylvania license search. Page 27 of 41.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 174400000X · 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, 767

  1. Pittsburgh767
  2. Philadelphia110
  3. Clarks Summit30
  4. Whitehall29
  5. Allentown28

Specialist records in Pennsylvania

  1. Kathleen NiesFairview, PA 164151609421346
  2. Ajay NiranjanPittsburgh, PA 152131770557407
  3. Emily NissleyReading, PA 196111396391371
  4. Charles Nissman, DDSFeasterville, PA 190531538133665
  5. Craig Nivens, LMTErie, PA 165061780874966
  6. Mollie NixonBrookville, PA 158251083886790
  7. Robert Noecker, MDPittsburgh, PA 152131588638217
  8. Eric Nofzinger, MDPittsburgh, PA 152131578538203
  9. Robert Noland, MDPittsburgh, PA 152131003836842
  10. Paul NollShrewsbury, PA 173611821332743
  11. Cory Nordyke, LMT, MMPTamiment, PA 183711609323146
  12. Jasmine Northern, MSW, LBSMedia, PA 190631912793324
  13. John Norwig, ATCPittsburgh, PA 152031598759631
  14. Dina Novitskaya, MDPittsburgh, PA 152131811163777
  15. Katherine Nugent, DPTPhiladelphia, PA 191391326345562
  16. Michael NunesClarks Summit, PA 184111962705582
  17. Author Nussbaum, MDPittsburgh, PA 152131104891845
  18. John O'Connor, D.O.Sellersville, PA 189601649249806
  19. Lisa O'Hara, M.T.Bellefonte, PA 168231093884348
  20. Stephen O'Keefe, MDPittsburgh, PA 152131366417065
  21. Casey O'NeilWhitehall, PA 180521952837320
  22. Bryan O'Neill, M.D.North Wales, PA 194541528095783
  23. Martin O'Sullivan, MDPhiladelphia, PA 191111710093430
  24. Kevin O'Toole, MDPittsburgh, PA 152131457326795
  25. Kim O'TooleMilford, PA 183371487285094
  26. Suzan Obagi, MDPittsburgh, PA 152131699740332
  27. Chester OddisPittsburgh, PA 152131356316004
  28. Betty OertnerSlatington, PA 180801174854459
  29. Christopher OlbrichPittsburgh, PA 152351255306577
  30. Nancy Oler, PTTurtle Creek, PA 151451114177821
  31. Arthur Oligeri, SHOE FITTERErie, PA 165651659544856
  32. Abby Olsen, MD, PHDPittsburgh, PA 152131760820971
  33. Bienvenido Ong, M.D.New Castle, PA 161051982614830
  34. Marie OnukiavageScranton, PA 185101639525223
  35. Trevor Orchard, MDPittsburgh, PA 152131922073626
  36. Steven Orebaugh, MDPittsburgh, PA 152031659346351
  37. David Orenstein, MDPittsburgh, PA 152131376518076
  38. Richard Orr, MDPittsburgh, PA 152131043285380
  39. Luis Ortiz, MDPittsburgh, PA 152131417922121
  40. Thaddeus Osial, MDPittsburgh, PA 152151497720106
  41. David Ostfeld, M.D.Easton, PA 180421760468979
  42. Kuang-Yu Ou, MDPittsburgh, PA 152181417922139
  43. Tim OuryPittsburgh, PA 152131962477687
  44. Florante Paat, MDMcKeesport, PA 151321023083375
  45. Jeffrey Pace, LPTDallas, PA 186121336364538
  46. Charissa Pacella, MDPittsburgh, PA 152131982679502
  47. Karri PacileoErie, PA 165071265076079
  48. Michele Paessler, D.O.Philadelphia, PA 191041326198201
  49. Hector Pagan, M.D.Aliquippa, PA 150011619939337
  50. Thomas PainterPittsburgh, PA 152131033184668

Source: CMS NPPES, primary taxonomy 174400000X: records by practice city and the list of records, file of Aug 9, 2026.

Pennsylvania ranks 15 of 51 per resident

  1. New Jersey18
  2. Alaska17
  3. Arkansas16
  4. Pennsylvania16
  5. Massachusetts16
  6. West Virginia15
  7. 50 states and D.C.18

Source: CMS NPPES, primary taxonomy 174400000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

39.6% of these records appear in a Medicare file, against 17.0% 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. Pennsylvania39.6%
  2. United States17.0%

Specialist records in Pennsylvania, measured

  • In a Medicare file805 of 2,031 · 39.6% here, 17.0% nationally
  • In the CMS Doctors and Clinicians file547 · 26.9% here, 11.1% nationally
  • Not updated in five years or more1,393 · 68.6% here, 77.3% nationally
  • Median graduation year1989 · the 547 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 174400000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

2,031 NPPES records list specialist (174400000X) as their primary taxonomy with a practice address in Pennsylvania: 16 per 100,000 residents against 18 nationally (50 states and D.C.). Pittsburgh has 767 of them (38%).

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. Texas1,716
  2. New Jersey1,636
  3. Washington2,609
  4. Florida2,685

States with a similar rate per 100,000

  1. Massachusetts15.7
  2. West Virginia15.4
  3. Maryland15.2
  4. Arkansas16.4

The largest states

  1. New York22,636
  2. California5,749
  3. Florida2,685
  4. Washington2,609
  5. Texas1,716

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.