The state Medical Examining Board Tuesday disciplined a Fairfield pulmonologist for improperly prescribing opioids and a former UConn Health doctor who had stolen medication from the health center for his private practice. Dr. Igal Staw, who works at Respiratory Associates in Fairfield, was reprimanded, fined $7,500 and has been permanently restricted from prescribing opioids, under a consent order he agreed to. He also must hire a supervisor to monitor his drug prescriptions and will be placed on two years of probation if his state registration to prescribe controlled substances is ever reinstated, the order said. In 2012 and 2013, Staw prescribed opioids to eight patients with chronic pain, including some who may have been abusing the medicine, the order said. He also failed to document the reasons for the prescriptions or justify in the patients’ medical charts why he was increasing the doses, state records show.