A Monroe doctor who avoided prison time last year for his role in an extensive insurance fraud scheme was reprimanded Tuesday by the state Medical Examining Board. The board also decided that Dr. James W. Marshall Jr., 60, who lives in Orange, will have his medical license placed on probation for six months if he renews his registration to prescribe controlled substances. He voluntarily surrendered that registration in 2011 after he was implicated in “Operation Running Man,” a 14-month undercover investigation of auto insurance fraud conducted by the FBI. A hearing panel of the Medical Examining Board concluded that Marshall, who operates Immediate Medical Care in Monroe, prescribed painkillers such as Vicodin and Percocet 145 times for 75 patients when they were not his patients and he had not examined them, according to the board’s memorandum of decision. Marshall believed the patients had been injured in car accidents, the memo said.