Overview
- 50 inspections across 49 sites are on record.
- 2 Form 483 observations are attributed to this investigator.
- Most recent recorded activity is 2026-06-26.
At a glance
Inspections
50
Sites
49
Observations
2
Career since
Jan 2022
Recent inspections
Most recent inspections in the published record.
| Site | Date | Category | Form 483 |
|---|---|---|---|
| Dr. Isabelle Schenkenberger, M.D. | 26 Jun 2026 | Human Drugs | |
| Dr. Yavor Ivanov, M.D., Ph.D. | 19 Jun 2026 | Human Drugs | |
| Esther M. H. Nakagawara, O.D. | 22 May 2026 | Human Drugs | |
| Carol A. Aune, O.D. | 15 May 2026 | Human Drugs | |
| Worldwide Clinical Trials, Inc. | 5 May 2026 | Human Drugs |
Sites inspected
Dr. Isabelle Schenkenberger, M.D.Bradenburg, Germany1 insp.
Dr. Yavor Ivanov, M.D., Ph.D.Pleven, Bulgaria1 insp.
Esther M. H. Nakagawara, O.D.Garner, United States1 insp.
Carol A. Aune, O.D.Garner, United States1 insp.
Worldwide Clinical Trials, Inc.Research Triangle Park, United States1 insp.
Co-investigators
Investigators who share inspections with this person.
Michelle D Haamid3 shared
Betsy C Galliher3 shared
Anna M Brannen2 shared
Tracy R Ball2 shared
Talia J Ferguson1 shared
Kerun Hardeo1 shared
Mishelle L Harriger1 shared
Donna D Gallien1 shared
Brandy D Brown1 shared
Full investigator report
Get the verbatim findings behind Nigel L Hirth's 2 observations
Source 483 PDFs, verbatim observations, and how each site responded, so your team knows what they cite before they arrive.
- New inspections and Form 483s, mapped to the CFR citation
- Warning letter outcomes, and the citation patterns they repeat
- Their co-investigators, so no surprises about who shows up on site