FDA 483 OBSERVATION · #162 OF 1,923 MOST-CITED

Investigator non-compliance with agreement/plan/regulations

FDA cited this observation 193 times across 189 firms in recent inspections. Below: how it breaks down by program area and fiscal year, and real examples of how FDA worded it on Form FDA 483.

What this grouping is not

An observation-type page groups FDA’s published citation records. The grouping, the compliance steps and the root causes are SPEQ synthesis, not an FDA classification of any citation, and a count measures what FDA published rather than risk.

BY PROGRAM AREA
Devices193
BY FISCAL YEAR
FY202617
FY202521
FY202413
FY202312
FY20227
FY20218
FY202015
FY201915
FY201835
FY201725
FY201625

What this observation is associated with

Firms cited for this observation also appear in FDA compliance actions — warning letters, injunctions, or seizures — at 0.1× the rate of the average FDA-cited firm (1.1% vs 7.8%), across 189 FEI-matched firms.

This is an association, not causation, and reflects co-occurrence in FDA's records — not a claim that the observation caused or preceded the action.

CHECKING ACCESS

Checking your Professional access…

How FDA worded it — real examples

An investigation was not conducted according to the signed agreement, investigational plan and applicable FDA regulations.

Mark Clemens M.D. · Houston, Texas · Devices · 2026-08-06

An investigation was not conducted according to the investigational plan.

Benjamin D. Elder, MD, PhD · Rochester, Minnesota · Devices · 2026-03-27

An investigation was not conducted according to the signed agreement and investigational plan.

Terence T. Sio, M.D., M.S. · Phoenix, Arizona · Devices · 2026-03-23

An investigation was not conducted according to the signed agreement, investigational plan and applicable FDA regulations.

Rishi K. Wadhwa, M.D. · Shreveport, Louisiana · Devices · 2026-03-20

An investigation was not conducted in accordance with the investigational plan and conditions of approval imposed by an IRB.

Peter R. Movilla, MD · Newton Lower Falls, Massachusetts · Devices · 2026-03-19

An investigation was not conducted according to the signed agreement and investigational plan.

Wilber W. Su, MD · Phoenix, Arizona · Devices · 2026-02-27

Related SPEQ references

Where to read the requirements behind this observation area on SPEQ. These are SPEQ's topic and audience pages — not an FDA classification of the citation.

Medical devices →

Examples are a representative sample of FDA's published inspection observations. Open the 483 observation explorer →