Companies given provisional approval to run medical marijuana dispensaries in Massachusetts are being subjected to additional scrutiny by state health officials. The Public Health Department has notified companies approved for provisional licenses they will be subjected to extensive additional background checks on anyone ``who will have any involvement'' with the proposed dispensaries, including volunteers, consultants, advisory board members, staff members, and all corporate and individual investors.

The selection process has come under intense scrutiny and three rejected companies have filed lawsuits.