PHOENIX — Five months after a Cochise County doctor’s medical license was suspended in an emergency hearing, the Arizona Medical Board formally revoked the license effective Nov. 9.

Glenn Gary Robertson, M.D. worked out of a clinic in Benson that he opened after suffering a stroke in 2014 that resulted in the closure of his practice in Sierra Vista.  

He had held a medical license since July 2004. 

Robertson, 50, came under investigation in June when the board received a complaint alleging the doctor sold narcotic prescriptions, kept incomplete patient records, and engaged in other inappropriate behavior. He failed to undergo biological testing the medical board ordered due to concerns Robertson had a substance abuse problem. 

“A physician commits unprofessional conduct by failing or refusing to comply with a formal order issued by the Board,” the revocation order states. “The Board has shown by clear and convincing evidence that Dr. Robertson violated a formal order issued by the Board.” 

Public documents reveal the medical board reviewed Arizona Board of Pharmacy records from June 11, 2017, to June 11, 2018, that reveal Robertson wrote 3,582 prescriptions for opiate agonists (such as oxycodone, methadone and morphine). Based on a five-day work week, the records show the doctor issued a daily average of more than 13 opiate prescriptions during that one year.   

On June 25, the medical board convened a special meeting at which they voted to suspend Robertson’s license for failing to undergo the drug testing and for his non-response to a consent agreement that would have prohibited him from practicing medicine without permission of the board’s executive director. 

Robertson was then notified a state administrative law judge (ALJ) would review the matter at an Aug. 23 hearing. The doctor didn’t request a continuance, nor did he ask to participate telephonically. 

“Dr. Robertson did not appear, personally or through an attorney, and did not contact the Office of Administrative Hearings to request that the start of the hearing be further delayed,” the revocation order states. “Consequently, Dr. Robertson did not present any evidence to defend his medical license.”

The ALJ issued a recommended Order for License Revocation that the board adopted earlier this month with minor modifications. Robertson wasn’t present for the board’s revocation vote, but two attorneys from the Arizona Attorney General’s Office were there.  

According to the medical board, Robertson allowed his license to administratively expire in October. He has until Dec. 14 to petition for a rehearing or review of the board’s decision, otherwise the revocation order becomes effective five days later.  

The revocation order isn’t the first board action related to Robertson, who served his residency at the University of Arizona from 2001 to 2004. 

In August 2007, he admitted to having prescribed a controlled substance to an employee who was not his patient. He consented to being prohibited from practicing clinical medicine and agreed to undergo various evaluations. 

His ability to practice wasn’t restored until October 2009. 

Then in 2016, Robertson came under review after a hospital complained about care he provided a 71-year-old dementia patient. He received a letter of reprimand in that matter and was placed on probation for six months starting in December 2017. 


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