A Caribou doctor, who was reprimanded by the state medical licensing board in 2014 for his role in improperly dispensing medical marijuana certificates, has now surrendered his license to practice in Maine. The Maine Board of Licensure in Medicine announced Friday that Dr. William Ortiz has surrendered his license as part of a consent agreement this week that resolved a new complaint against him. The recent complaint was based on Ortiz’s failure to disclose information on his 2017 medical license renewal applications.