Margaret Dennis, D.M.D.
Outcome
DEA revoked DEA Certificate of Registration No. BD1443732 effective June 6, 2025, after finding the dentist issued controlled substance prescriptions to at least four patients from January 2013 through July 2024 without medical justification, outside her scope of practice, and without addressing red flags of abuse or diversion.
Details
Margaret Dennis, D.M.D. — DEA Default Order and Registration Revocation for 11-Year Pattern of Improper Prescribing (2013–2025)
Outcome: DEA revoked DEA Certificate of Registration No. BD1443732 issued to Margaret Dennis, D.M.D. in Florida effective June 6, 2025, after finding that between at least January 2013 and July 2024 — an 11-year period — the dentist issued controlled substance prescriptions to at least four patients without proper medical justification, outside the scope of her dental practice, and without appropriately addressing red flags of abuse or diversion.
The DEA issued an Order to Show Cause and Immediate Suspension of Registration against Margaret Dennis, D.M.D. The OSC/ISO alleged that between at least January 2013 and at least July 2024, Registrant issued numerous prescriptions for controlled substances to at least four patients, with three categories of violations: (1) failing to establish a proper medical justification for prescribing the controlled substances; (2) prescribing outside the scope of her dental practice; and (3) failing to appropriately address red flags of abuse or diversion.
Dennis was deemed to be in default after failing to contest the allegations or request a hearing. DEA Acting Administrator Derek Maltz signed the Default Decision and Order on May 1, 2025, which was published in the Federal Register on May 7, 2025, and became effective June 6, 2025. The DEA denied any pending applications to renew or modify the registration, as well as any other pending application for additional DEA registration in Florida.
The case is notable for the extraordinary duration of the alleged violations — spanning more than a decade — and the failure of any internal practice controls to identify or stop the problematic prescribing pattern during that entire period.
Primary Source: Margaret Dennis, D.M.D.; Default Decision and Order (Fed. Reg. May 7, 2025)
How Crucible Prevents This
Dennis continued prescribing outside her dental scope of practice and without documentation of medical justification for over a decade. Crucible's scope-of-practice controls for controlled substance prescriptions would have flagged prescriptions that fell outside standard dental indications, and the red-flag documentation requirements would have forced contemporaneous recording of any clinical basis for atypical prescribing decisions.
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