FDA Investigators
FDA Investigator Lookup
Every FDA investigator on record, with the inspections they ran, the observations they issued, and the sites and co-investigators behind them.
6,103
Investigators
232,103
Sites
148,507
Form 483s
88,971
Observations
Jane Chen
FDA investigator · Foods & Cosmetics
541
Inspections
2,176
483 obs.
533
Sites
Latest inspection on record: Saha, South Korea, May 2026 · records back to 2008
View profileJoshua J Silvestri
FDA investigator · Medical Devices & Rad Health
275
Inspections
1,919
483 obs.
243
Sites
Latest inspection on record: Warwick, United Kingdom, June 2026 · records back to 2008
View profileSonia E Ortiz
FDA investigator · Foods & Cosmetics
577
Inspections
1,678
483 obs.
194
Sites
Latest inspection on record: Jamaica, United States, June 2026 · records back to 2008
View profileClara E Santiago
FDA investigator · Foods & Cosmetics
508
Inspections
1,636
483 obs.
496
Sites
Latest inspection on record: Samut Sakhon, Thailand, July 2026 · records back to 2008
View profileGamal A Norton
FDA investigator · Medical Devices & Rad Health
243
Inspections
1,392
483 obs.
213
Sites
Latest inspection on record: Florence, Italy, May 2026 · records back to 2008
View profileMaryam Tabatabaie
FDA investigator · Medical Devices & Rad Health
235
Inspections
1,381
483 obs.
209
Sites
Latest inspection on record: Haina, Dominican Republic, June 2026 · records back to 2008
View profileJustin A Boyd
FDA investigator · Human Drugs
279
Inspections
1,374
483 obs.
240
Sites
Latest inspection on record: Pilar, Argentina, June 2026 · records back to 2008
View profileRobert D Ogan
FDA investigator · Foods & Cosmetics
374
Inspections
1,354
483 obs.
368
Sites
Latest inspection on record: Miura, Japan, June 2026 · records back to 2008
View profileJames R Montero
FDA investigator · Medical Devices & Rad Health
261
Inspections
1,327
483 obs.
211
Sites
Latest inspection on record: Xiamen, China, April 2026 · records back to 2009
View profileMatthew D Schnittker
FDA investigator · Medical Devices & Rad Health
185
Inspections
1,168
483 obs.
131
Sites
Latest inspection on record: Buffalo, United States, July 2026 · records back to 2015
View profileFrank J Marciniak
FDA investigator · Medical Devices & Rad Health
198
Inspections
1,184
483 obs.
179
Sites
Latest inspection on record: North Brunswick, United States, June 2026 · records back to 2008
View profilePeter T Erlandson
FDA investigator · Foods & Cosmetics
449
Inspections
1,112
483 obs.
343
Sites
Latest inspection on record: Belleville, United States, June 2026 · records back to 2009
View profileGreg K Keshishyan
FDA investigator · Foods & Cosmetics
471
Inspections
1,110
483 obs.
387
Sites
Latest inspection on record: El Monte, United States, July 2026 · records back to 2008
View profileChristine I Shaw
FDA investigator · Medical Devices & Rad Health
208
Inspections
1,104
483 obs.
186
Sites
Latest inspection on record: Littleton, United States, March 2025 · records back to 2008
View profileMeredith P Soehl
FDA investigator · Foods & Cosmetics
273
Inspections
1,035
483 obs.
169
Sites
Latest inspection on record: Deer Park, United States, July 2026 · records back to 2008
View profileRoy Baby
FDA investigator · Medical Devices & Rad Health
252
Inspections
995
483 obs.
239
Sites
Latest inspection on record: Shanghai, China, March 2026 · records back to 2009
View profileKunapuli T Madhusudhan
FDA investigator · Foods & Cosmetics
182
Inspections
992
483 obs.
178
Sites
Latest inspection on record: Kuttapuli, India, June 2026 · records back to 2017
View profileRocio Guzman-Velazquez
FDA investigator · Foods & Cosmetics
337
Inspections
985
483 obs.
294
Sites
Latest inspection on record: Araruama, Brazil, June 2026 · records back to 2009
View profileJacqueline S Warner
FDA investigator · Medical Devices & Rad Health
213
Inspections
957
483 obs.
178
Sites
Latest inspection on record: Brooklyn, United States, April 2026 · records back to 2008
View profileRonald Ifraimov
FDA investigator · Medical Devices & Rad Health
398
Inspections
930
483 obs.
294
Sites
Latest inspection on record: Miami, United States, June 2026 · records back to 2008
View profileKwong P Lee
FDA investigator · Medical Devices & Rad Health
411
Inspections
920
483 obs.
335
Sites
Latest inspection on record: Burlingame, United States, March 2026 · records back to 2008
View profileCarrie L Doupnik
FDA investigator · Foods & Cosmetics
280
Inspections
911
483 obs.
214
Sites
Latest inspection on record: Wirtz, United States, October 2020 · records back to 2009
View profileDenise Connelly
FDA investigator · Foods & Cosmetics
290
Inspections
915
483 obs.
278
Sites
Latest inspection on record: Le Mars, United States, July 2026 · records back to 2015
View profileJohn A Sciacchitano
FDA investigator · Medical Devices & Rad Health
315
Inspections
898
483 obs.
295
Sites
Latest inspection on record: Allenby Gardens, Australia, June 2026 · records back to 2010
View profileFAQ
Questions about FDA investigators
Looking up an investigator, what their record shows, and how to prepare for them.
How do I look up an FDA investigator?
Search the investigator's name in the Atlas investigator lookup above. Each profile shows the inspections they ran, the facilities they inspected, the Form 483 observations on their record, their product areas, and the investigators they work with. Justin A Boyd's profile, for example, maps a human drugs investigator's record across sites in the United States and abroad.
Why research an FDA investigator before an inspection?
Because investigators have patterns. Their record shows which kinds of facilities they visit, how often their inspections end in a Form 483, and who they inspect with, so your team can prepare for how they work. Atlas puts that history on one page per investigator, and our article on FDA investigators and their inspection history explains how quality teams use it.
Which FDA investigators issue the most Form 483 observations?
Sort this directory by Most 483 observations to rank every investigator by the observations on their record. The ranking updates with each data release, and you can filter by product area to compare like with like. Open any profile, such as Nicole E Knowlton's, to see the recent inspections and facilities behind those observations.
Can I see which companies an FDA investigator has inspected?
Yes. Every investigator profile lists the facilities that investigator inspected, with inspection dates and product areas, and links to each facility's own page and Form 483s. Jane Chen's profile, for example, covers hundreds of inspections at food and cosmetics facilities in the United States and abroad.
What do FDA investigators look for during an inspection?
It depends on the product area and the investigator. Drug inspections commonly turn up findings on quality unit procedures, investigations of deviations, and laboratory controls, while food inspections focus on preventive controls and sanitation. Our list of 100 things FDA inspectors look for covers the full checklist, and each facility page here lists the regulations cited there.
Full investigator reports
Know what an investigator cites before they arrive
Source 483 PDFs and verbatim observations for every inspection on an investigator's record, with how each site responded.
- Their most-cited regulations, mapped to the CFR
- Warning letter outcomes from their inspections
- Their co-investigators, so no surprises about who shows up