A doctor was ordered to stand trial for allegedly killing a patient who died after his healthy leg was amputated.

John Ronald Brown, 75, of San Ysidro was ordered held for trial on Friday. He will remain in prison without bail, Municipal Court Judge Leo Valentine Jr. ruled.Brown is accused of killing Philip Bondy, 80, who died in May of gangrene from an illegal amputation performed in Tijuana.

Brown, who pleaded not guilty in May, also is charged with practicing medicine without a license. His California license was revoked in 1977 after three patients nearly died from sex change operations he performed in places such as a garage and a hotel.