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

Category
Site coverage
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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

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Joshua 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

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Sonia 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

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Clara 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

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Gamal 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

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Maryam 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

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Justin 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

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Robert 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

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James 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

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Matthew 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

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Frank 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

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Peter 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

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Greg 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

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Christine 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

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Meredith 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

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Roy 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

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Kunapuli 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

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Rocio 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

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Jacqueline 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

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Ronald 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

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Kwong 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

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Carrie 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

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Denise 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

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John 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 profile

FAQ

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