Overview
- 164 inspections across 157 sites are on record.
- 610 Form 483 observations are attributed to this investigator.
- Most recent recorded activity is 2026-02-13.
At a glance
Inspections
164
Sites
157
Observations
610
Career since
Nov 2010
Recent inspections
Most recent inspections in the published record.
| Site | Date | Category | Form 483 |
|---|---|---|---|
| The Methodist Hospital Research Institute | 13 Feb 2026 | Human Drugs | On file |
| Cardinal Health 414 LLC | 23 Jan 2026 | Human Drugs | On file |
| PETNET Solutions, Inc. | 11 Dec 2025 | Human Drugs | |
| Alliance Medical Products, Inc. | 7 Nov 2025 | Human Drugs | On file |
| Avantor Performance Materials India Limited | 17 Sep 2025 | Human Drugs | On file |
Sites inspected
The Methodist Hospital Research InstituteHouston, United States1 insp.
Cardinal Health 414 LLCPhoenix, United States1 insp.
PETNET Solutions, Inc.Dallas, United States1 insp.
Alliance Medical Products, Inc.Irvine, United States1 insp.
Avantor Performance Materials India LimitedThane, India1 insp.
Co-investigators
Investigators who share inspections with this person.
Anita Narula6 shared
Gerard P De Leon5 shared
Katherine L Arnold5 shared
Walden H Lee4 shared
Mark W Babbitt4 shared
Roger F Zabinski3 shared
Vioela J Caze3 shared
Marijo B Kambere3 shared
Robert D Tollefsen3 shared
Leon R Marquart3 shared
Full investigator report
Get the verbatim findings behind Christopher R Czajka's 610 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