Hundreds of medical records kept by a longtime Acton, MA, family doctor who abruptly closed his practice in 2008 are about to be destroyed, leaving patients without crucial information and exposing a gap in state law about who owns abandoned medical records. On April 8, a storage company is scheduled to discard the records and auction the equipment left by Ronald T. Moody, who was evicted from his office last September as state regulators pursued him for practicing without a license. Many of Moody's former patients have no idea that their records are slated for destruction. None has been notified, nor does the law require such notice.