FDA Investigator

Gonzalo Castillo

Latest inspection on record: Kansas City, United States, April 2025 · records back to 2022

Foods & CosmeticsAnimal Drugs & Feeds

FDA inspection record · Last updated July 12, 2026

Overview

  • 15 inspections across 14 sites are on record.
  • 20 Form 483 observations are attributed to this investigator.
  • Most recent recorded activity is 2025-04-09.

At a glance

Inspections

15

Sites

14

Observations

20

Career since

Sep 2022

Recent inspections

Most recent inspections in the published record.

SiteDateCategoryForm 483
Yowie North America, Inc.9 Apr 2025Foods & Cosmetics
Protein for Pets OPCO, LLC3 Apr 2025Animal Drugs & Feeds
Produce El Amanecer LLC7 Feb 2025Foods & CosmeticsView 483 →
Buffalo Corp.23 Dec 2024Animal Drugs & Feeds
Hostess Brands LLC2 Dec 2024Foods & Cosmetics

Sites inspected

Yowie North America, Inc.Kansas City, United States1 insp.
Protein for Pets OPCO, LLCMonett, United States1 insp.
Produce El Amanecer LLCSan Antonio, United States1 insp.
Buffalo Corp.O Fallon, United States1 insp.
Hostess Brands LLCLenexa, United States1 insp.

Full investigator report

Get the verbatim findings behind Gonzalo Castillo's 20 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