A doctor pleaded guilty Monday to sexually abusing sedated patients at his New York City hospital and raping women who were unconscious at his home. Zhi Alan Cheng admitted to abusing seven women, including three female patients he was treating at New York-Presbyterian Queens hospital, the Queens district attorney's office said. Cheng, now 35, was arrested in 2022 after a female acquaintance discovered a video of him abusing her at his home while she was passed out.