Van de Loo was charged in October with sexually assaulting a 16-year-old male patient.
A lawsuit alleges a pediatrician sexually abused a man while he was a patient at Mayo Clinic Health System in Eau Claire.
Attorneys for the former Eau Claire man filed the lawsuit Wednesday. It alleges that Dr. David Van de Loo sexually abused the man while he was a patient at the clinic from 2004 to 2011.
The man is now 21 and living in Minnesota. He is identified as John Doe 24 to protect his identity.
Van de Loo was charged in October with sexually assaulting a 16-year-old male patient. The clinic terminated Van de Loo on Sept. 12.
Mayo Clinic Health System says it has not had a chance to review the lawsuit.
Van de Loo says he has not heard of the lawsuit and had no comment.