Patrick Gries, D.V.M. / VCA Amherst Animal Hospital
Outcome
Veterinarian Patrick Gries pleaded guilty January 2022 to drug adulteration and unlawful controlled substance distribution for diverting hydromorphone from animal surgical patients by withdrawing the opioid from vials, injecting it into himself, and replacing it with saline or butorphanol; sentenced June 2022 to 8 months in federal prison.
Details
Patrick Gries, D.V.M. / VCA Amherst Animal Hospital — Hydromorphone Self-Diversion and Substitution (2020–2022)
Outcome: Patrick Gries, 54, D.V.M. of Madison Heights, Virginia, pleaded guilty in January 2022 to drug adulteration and unlawful controlled substance distribution, and was sentenced on June 22, 2022, to 8 months in federal prison for diverting hydromorphone from VCA Amherst Animal Hospital's surgical supply, injecting it into himself, and replacing the stolen drug with saline or butorphanol.
From 1994 through 2021, Patrick Gries practiced as a Doctor of Veterinary Medicine at VCA Amherst Animal Hospital in Amherst County, Virginia. As the hospital's primary surgeon, Gries had full access to the hospital's supply of Dilaudid (hydromorphone), which was maintained for treating pain in animal patients following surgery. Beginning in July 2020, Gries began withdrawing portions of hydromorphone from vials, injecting the drug into himself for personal use, and then replacing the stolen hydromorphone with another substance — usually saline or butorphanol — before returning the altered vials to hospital inventory.
This substitution scheme was designed to conceal the diversion: the vials remained physically present in inventory, but the controlled substance content had been replaced with a non-equivalent substitute. Animals receiving surgical pain management after this point received diluted or substituted medication rather than the prescribed hydromorphone, compromising their post-operative care.
Gries pleaded guilty on January 24, 2022, to one count of adulteration of a drug held for sale after shipment in interstate commerce and one count of distribution of a controlled substance without a written prescription. U.S. District Judge Norman K. Moon sentenced Gries on June 22, 2022, to 8 months in federal prison. The case was investigated jointly by the FDA Office of Criminal Investigations, the DEA Diversion Control Division, and the Virginia State Police.
Primary Source: DEA Press Release — Amherst County Veterinarian Sentenced for Opioid Theft (Jun. 22, 2022)
How Crucible Prevents This
Gries substituted saline or butorphanol for withdrawn hydromorphone and returned adulterated vials to hospital inventory, concealing the diversion. Crucible's controlled substance inventory reconciliation — requiring vial-by-vial accounting and tamper-evident storage protocols — would have detected the weight and volume discrepancies between ordered and available controlled substance inventory, flagging the substitution scheme before it persisted for years.
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