Dr. Jan Adams, who performed surgery on Kanye West
's mother a day before her November 2007 death
, has given up his medical license, according to the Medical Board of California.
"A series of complaints were filed against Mr. Adams, but he chose to surrender his license instead of contest them," Medical Board spokeswoman Candis Cohen tells PEOPLE.
Among the complaints: Two DUI convictions and failure to pay child support. His record also shows at least four malpractice judgments against him between 2001 and 2007.
Calls to Adams and his lawyer were not immediately returned.
A Harvard graduate, Adams's reputation as a Beverly Hills plastic surgeon grew after making appearances on TV's Extra, the Discovery Channel, and The Oprah Winfrey Show
, among others.
Donda West's autopsy concluded the 58-year-old woman died of heart failure. Although "there was no evidence of a surgical or anesthetic misadventure," the report found that "multiple post-operative factors could have played a role."
"As far as I'm concerned ... at least the autopsy report suggests nothing went on during surgery, nothing went on during recovery," Adams told Larry King
in Jan. 2008.