Dr. Glenn Giarratana, who was charged with sexually assaulting two patients at a New London methadone clinic, killed himself over the weekend at his Madison home.

Giarratana, 59, died Saturday of a shotgun wound to the head, according to the state Office of the Chief Medical Examiner. The manner of death was ruled a suicide.

He was charged in October 2014 with groping a 26-year-old woman at the Hartford Dispensary, which is a methadone clinic in New London. A second woman, who was 31, came forward recently and New London police charged him with another count of fourth-degree sexual assault.

The women said Giarratana touched them in a sexual manner when they were left alone during physical examinations. He was free on bond while his cases were pending in New London Superior Court.

Madison police could not immediately be reached for comment.

k.florin@theday.com

Twitter: @KFLORIN