WASHINGTON, July 28 (TNSFR) -- The U.S. Department of Justice Drug Enforcement Administration has revoked Gene M. Koop, D.D.S.'s registration to handle controlled substances in Oklahoma after finding that his state authorizations had expired and he did not request a hearing to contest the action.

The agency issued an Order to Show Cause to Koop on Nov. 17, 2025, proposing revocation of Certificate of Registration No. BK1369633. The order alleged that Koop was without authority . . .

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