NPPES file of Aug 9, 2026

Research Study Specialist in Ohio

14 NPPES records list research study specialist with a practice address in Ohio, 0.1 per 100,000 residents, the 19th highest rate of 41. Cleveland and Cincinnati have the most; each record links to the provider's NPI and the Ohio 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).

Cleveland has the most, 6

  1. Cleveland6
  2. Cincinnati2
  3. Columbus2
  4. Dayton1
  5. Milford1

Research Study Specialist records in Ohio

  1. Ahmed Suparno Bahar MoniToledo, OH 436141134902430
  2. Manoela Dantas, MDCleveland, OH 441951003762345
  3. Robert Dennis, PH.D., CRCDayton, OH 454281346321056
  4. Cristina FrentiuCleveland, OH 441021326345638
  5. Pierluigi Gambetti, M.D.Cleveland, OH 441061760552145
  6. Luciana Hannibal, PH.DCleveland, OH 441951336377555
  7. Jonathan Jacobs, PHDCleveland, OH 441061922944131
  8. Hayat MohammedRootstown, OH 442721336085224
  9. Vincent Monnier, MDCleveland, OH 441061124567466
  10. Daniel Nebert, M.D.Cincinnati, OH 452151487902557
  11. McKenzi NorrisColumbus, OH 432131902774664
  12. Beth Rigney, BSNMilford, OH 451501699103408
  13. Carolina Romero Narvaez, MDColumbus, OH 432051073232575
  14. Farhan Zafar, M.D.Cincinnati, OH 452291346555380

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

Ohio ranks 19 of 41 per resident

  1. Florida0.1
  2. New York0.1
  3. Pennsylvania0.1
  4. Ohio0.1
  5. Washington0.1
  6. Texas0.1
  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. Ohio0.0%
  2. United States4.3%

Research Study Specialist records in Ohio, measured

  • In a Medicare file0 of 14 · 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 more8 · 57.1% 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

14 NPPES records list research study specialist (1744R1102X) as their primary taxonomy with a practice address in Ohio: 0.1 per 100,000 residents against 0.1 nationally (50 states and D.C.). Cleveland has 6 of them (43%).

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. Colorado15
  2. Illinois12
  3. North Carolina16
  4. Pennsylvania16

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.