NPPES file of Aug 9, 2026

Research Study Specialist in Pennsylvania

16 NPPES records list research study specialist with a practice address in Pennsylvania, 0.1 per 100,000 residents, the 18th highest rate of 41. Philadelphia and Pittsburgh have the most; each record links to the provider's NPI and the Pennsylvania license search.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 1744R1102X · 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, 7

  1. Philadelphia7
  2. Pittsburgh4
  3. Altoona1
  4. Ambler1
  5. Collegeville1

Research Study Specialist records in Pennsylvania

  1. Gela Bajelidze, MDPhiladelphia, PA 191041063668242
  2. Gwen Berardinelli, RT, CCRCAltoona, PA 166021174866701
  3. Richard Brigandi, M.D., PH.D.Collegeville, PA 194261730578287
  4. Rachel DlugashPhiladelphia, PA 191041427290857
  5. Jeffrey Gemi, MDDresher, PA 190251881230472
  6. Jacob Johnson, MSCPittsburgh, PA 152131952945354
  7. Jiatong Li, MD, MPHPittsburgh, PA 152131083578207
  8. Mengyi LiPittsburgh, PA 152131427912658
  9. Maria MiddlebergDoylestown, PA 189021508508003
  10. Christopher Riley, PHDPhiladelphia, PA 191251952099582
  11. Raed Salman, MDPhiladelphia, PA 191041538315650
  12. Tirzah Spencer, M.P.H., PH.D.Philadelphia, PA 191181144485178
  13. David Strayer, M.D.Philadelphia, PA 191031982015699
  14. Henrietta Ukwu, M.D.Ambler, PA 190021821363722
  15. George Woody, MDPhiladelphia, PA 191291134264708
  16. Anita Woolley, PHDPittsburgh, PA 152171801746722

Source: CMS NPPES, primary taxonomy 1744R1102X: records by practice city and the list of records, file of Aug 9, 2026.

Pennsylvania ranks 18 of 41 per resident

  1. Utah0.1
  2. Florida0.1
  3. New York0.1
  4. Pennsylvania0.1
  5. Ohio0.1
  6. Washington0.1
  7. 50 states and D.C.0.1

Source: CMS NPPES, primary taxonomy 1744R1102X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

0.0% of these records appear in a Medicare file, against 4.3% 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. Pennsylvania0.0%
  2. United States4.3%

Research Study Specialist records in Pennsylvania, measured

  • In a Medicare file0 of 16 · 0.0% here, 4.3% nationally
  • In the CMS Doctors and Clinicians file0 · 0.0% here, 0.9% nationally
  • Not updated in five years or more10 · 62.5% here, 66.7% nationally

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 1744R1102X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

16 NPPES records list research study specialist (1744R1102X) as their primary taxonomy with a practice address in Pennsylvania: 0.1 per 100,000 residents against 0.1 nationally (50 states and D.C.). Philadelphia has 7 of them (44%).

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. North Carolina16
  2. Colorado15
  3. Ohio14
  4. Illinois12

States with a similar rate per 100,000

  1. New York0.1
  2. Texas0.1
  3. New Jersey0.1
  4. Florida0.1

The largest states

  1. California82
  2. Florida33
  3. Texas33
  4. Maryland31
  5. Massachusetts25

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.