A Chester County paramedic, already facing a rape charge involving a 19-year-old woman, was accused yesterday of having sexual contact with eight teenage boys - sometimes on hospital or ambulance company property.

According to a criminal complaint, Timothy Brian Kauffman, 39, of Downingtown, had sexual encounters with boys, ages 14 to 17, he met through his work for the Uwchlan Ambulance Corps and Brandywine Hospital and his volunteering with the Parkesburg Fire Company.

The criminal activities began in 1998 and continued through December, said the complaint, which includes results from a grand jury investigation.

The new charges include rape, involuntary deviate sexual intercourse, endangering the welfare of children, and selling or furnishing liquor to minors, according to the complaint.

One boy said Kauffman sexually assaulted him at age 16 at the Medic 93 building in Caln Township; another said he was 15 when Kauffman performed oral sex on him in a Uwchlan medic vehicle, the complaint said.

Other alleged victims described sexual assaults at drinking parties at Kauffman's various residences. The complaint said he had lived for periods in Parkesburg, Sadsbury Township and Downingtown.

Magisterial District Judge Rita Arnold arraigned Kauffman, setting cash bail at $300,000 and scheduling a preliminary hearing for May 11. Kauffman's attorney, G. Guy Smith, did not return a telephone call seeking comment.

Kauffman has been incarcerated since Dec. 15, when he was charged with raping a woman at an underage drinking party at his home last spring and illegally videotaping a sexual encounter with another underage woman during a summer gathering, court records said.

After his arrest, Kauffman was fired from his full-time Uwchlan Ambulance job and taken off the schedule for his part-time work at Brandywine Hospital.

Contact staff writer Kathleen Brady Shea at 610-701-7625 or kbrady@phillynews.com.