FDA Investigator

Leighton K Ngai

Latest inspection on record: Houston, United States, April 2019 · records back to 2008

Medical Devices & Rad HealthHuman DrugsAnimal Drugs & FeedsBiologicsFoods & Cosmetics

FDA inspection record · Last updated July 12, 2026

Overview

  • 224 inspections across 219 sites are on record.
  • 567 Form 483 observations are attributed to this investigator.
  • Most recent recorded activity is 2019-04-12.

At a glance

Inspections

224

Sites

219

Observations

567

Career since

Jul 2008

Recent inspections

Most recent inspections in the published record.

Sites inspected

DNAtrix Inc.Houston, United States1 insp.
Christine E. Codding, M.D.Oklahoma City, United States1 insp.
Garth O. Vaz, M.D.Gonzales, United States1 insp.

Co-investigators

Investigators who share inspections with this person.

Janice M Hickok4 shared
Adrian Rodriguez2 shared
Jennifer Hua2 shared

Full investigator report

Get the verbatim findings behind Leighton K Ngai's 567 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