Overview
- 13 inspections across 13 sites are on record.
- 56 Form 483 observations are attributed to this investigator.
- Most recent recorded activity is 2026-03-10.
At a glance
Inspections
13
Sites
13
Observations
56
Career since
Mar 2019
Recent inspections
Most recent inspections in the published record.
| Site | Date | Category | Form 483 |
|---|---|---|---|
| Hospira, Inc. | 10 Mar 2026 | Human Drugs | On file |
| Amphastar Nanjing Pharmaceuticals Inc | 19 Sep 2025 | Human Drugs | On file |
| Goodwin Biotechnology, Inc. | 16 May 2025 | Human Drugs | On file |
| Intas Pharmaceuticals Limited | 14 Feb 2025 | Human Drugs | On file |
| Genentech, Inc. | 27 Aug 2024 | Human Drugs |
Sites inspected
Hospira, Inc.Mcpherson, United States1 insp.
Amphastar Nanjing Pharmaceuticals IncNanjing, China1 insp.
Goodwin Biotechnology, Inc.Plantation, United States1 insp.
Intas Pharmaceuticals LimitedMoraiya, India1 insp.
Genentech, Inc.Oceanside, United States1 insp.
Co-investigators
Investigators who share inspections with this person.
Doan T Nguyen7 shared
Eric T Huebler2 shared
Wayne E Seifert1 shared
Priscilla A Amador Do Amaral1 shared
Hamet M Toure1 shared
Zhong Li1 shared
Michael Shanks1 shared
Rachel C Stanton1 shared
Jolanna A Norton1 shared
Xiaohui Shen1 shared
Full investigator report
Get the verbatim findings behind Doan N Singh's 56 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