TUCSON — A medical doctor who practiced in Cochise County until state officials revoked his license in November now stands accused of conspiring over several months to have one of his former patients killed, the Arizona Attorney General’s Office has announced.

Glenn Gary Robertson has remained in the Pima County jail infirmary since March 8 following his arrest by the FBI at his residence in Benson. He was indicted by a state grand jury on one count of conspiracy to commit first-degree murder and must post a $1 million secured bond to be released pending trial.

Robertson, 50, had his first court appearance in Pima County but the indictment has resulted in the case being moved to Cochise County, where the clerk’s office will set an arraignment date once the paperwork is transferred from Pima County. A spokeswoman for the Cochise County Sheriff’s Office said Robertson will eventually be transferred to the jail in Bisbee.

The Herald/Review has confirmed state and federal investigators became interested in Robertson’s prescription-writing practices last year. Among those interviewed by a DEA investigator was a female patient who previously worked for the doctor.

The indictment alleges Robertson conspired with someone starting in January 2018 to have the woman murdered. Special agents contacted the woman in early March to tell her about Robertson’s plan and to move her out of southern Arizona for a few days until his arrest was executed.

The criminal complaint doesn’t explain why Robertson wasn’t taken into custody until March if the conspiracy had been ongoing for more than one year. The attorney general’s office declined to comment on the timeline.

Although authorities identify the woman in Robertson’s criminal complaint, the Herald/Review generally does not reveal the name of crime victims. Additional details of the conspiracy are not divulged in court documents.

Medical license

Public records show Robertson obtained a medical license in 2004. The Arizona Medical Board issued an emergency suspension of the license in June due to concerns with his professional conduct and possible substance abuse issues. He also ignored an order to undergo drug and alcohol testing.

The board permanently revoked Robertson’s license in November after he failed to cooperate with the agency’s investigation or respond to the suspension order.

But that wasn’t the first time the doctor had problems with his medical license. In 2009, the board restricted Robertson from practicing clinical medicine for two years after he admitted writing a prescription for a non-patient. He later suffered a stroke in 2015 which impacted his clinical work during his recovery.

Then, in December 2017, the board placed Robertson on probation following questions about the quality of care he provided a patient. His probationary period expired June 7, 2018, two weeks before the medical board issued the suspension order. The suspension became a formal revocation with no input from Robertson.

Robertson mostly practiced in Benson, Sierra Vista, and Tucson.

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