BRING YOU UPDATES ON THIS FIRE THROUGHOUT THE NEWSCAST. >>> CHILLING ALLEGATIONS AGAINST A NEW YORK DOCTOR WITH TIES TO THE BAY AREA. HE'S ACCUSED OF DRUGGING AND ASSAULTING 13 WOMEN AND VIDEOTAPING THE CRIMES. >> THAT DOCTOR STARTED HIS MEDICAL CAREER RIGHT HERE IN THE BAY AREA WHERE INVESTIGATORS ARE SEARCHING FOR AT LEAST ONE VICTIM. NBC BAY AREA JOINS US NOW. >> THE DOCTOR HAS SEVERAL TIES TO THE BAY AREA. HE COMPLETED HIS RESIDENCY AT THE CALIFORNIA PACIFIC MEDICAL CENTER IN SAN FRANCISCO. SUTTER HOUSE HAS HIM LISTED AS A RESIDENT THAT GRADUATED FROM THEIR PROGRAM IN 2020. ACCORDING TO INVESTIGATORS, AT LEAST ONE OF THESE SEXUAL ASSAULTS TOOK PLACE IN THE BAY AREA. 13 WOMEN ALLEGEDLY DRUGGED, VIOLATED AND VIDEOTAPED. THOSE ARE THE LATEST ALLEGATIONS AGAINST A NEW YORK DOCTOR WITH TIES TO THE BAY AREA. >> Translator: FROM ONE DAY TO ANOTHER, IT FELT BAD KNOWING THIS HAPPENED TO ME. >> Reporter: SHE WAS A PATIENT OF THE DOCTOR AND FILED A LAWSUIT TWO MONTHS AGO AGAINST NEW YORK PRESBYTERIAN QUEENS HOSPITAL, ALLEGING HE DRUGGED AND SEXUALLY ABUSED HER INSIDE AN EXAM ROOM. NOW SHE'S LEARNING HER ALLEGED ASSAULT WAS VIDEOTAPED ALONG WITH SEVERAL OTHER PATIENTS AND ACQUAINTANCES. >> I SAID THIS COULD HAVE BEEN A MUCH YOUNGER GIRL THAN ME AND THAT FEELS BAD. >> Reporter: THE VIDEO DISCOVERY CAME AFTER AN ACQUAINTANCE OR A GIRLFRIEND FOUND VIDEO EVIDENCE SHOWING HER TRAUMA. THEY ALSO FOUND NARCOTICS, DRUGS USED TO SEDATE PATIENTS IN HEALTH CARE SETTINGS AND VIDEOS OF AT LEAST 13 WOMEN BEING RAPED OR SEXUALLY ABUSED. SIX OF THE WOMEN SEEN IN THE VIDEOS HAVE YET TO BE IDENTIFIED, AND AT LEAST ONE OF THOSE VIDEOS WAS TAKEN IN THE BAY AREA. >> WE KNOW THE VIDEOS WERE TAKEN NOT ONLY ONE OF THEM IN THE HOSPITAL AS WELL, BUT ALSO IN LAS VEGAS, IN SAN FRANCISCO, IN THAILAND, AND SO IT'S IMPORTANT THAT PEOPLE REACH OUT TO US SO WE CAN MAKE THE IDENTIFICATIONS. >> Reporter: WE REACHED OUT TO SAN FRANCISCO'S DISTRICT ATTORNEY'S OFFICE WHO SAID AS A MATTER OF POLICY, WE DO NOT COMMENT ON THE EXISTENCE OR NONEXISTENCE OF POSSIBLE CRIMINAL INVESTIGATIONS. WE HAVE YET TO HEAR FROM THE CALIFORNIA PACIFIC MEDICAL CENTER ABOUT ANY COMPLAINTS THEY MAY HAVE RECEIVED DURING HIS RESIDENCY THERE. WE'VE LEARNED DR. CHANG WAS AT SANTA CLARA MEDICAL CENTER. THE HOSPITAL SAID HE
