SIOUX FALLS — A doctor at the Yankton Indian Health Service in Wagner pleaded not guilty Wednesday to sexually abusing four people between 2014 and 2018.

Pedro Ibarra-Perocier faces eight federal charges, including four counts of getting adult Native American victims to engage in sexual acts and four counts of engaging in sexual contact with them, all through the use of threats and fear.

According to the indictment filed against Ibarra-Perocier on Feb. 4 and unsealed on Thursday, the offenses are alleged to have been committed between January 2014 and August 2018.

A federal employee database indicates Ibarra-Perocier began working for IHS in 2006. A 2012 post on the Yankton Indian Health Service Facebook page indicated Ibarra-Perocier obtained his MD from the Universidad Central Del Este in the Dominican Republic.

Ibarra-Perocier has been released from federal custody. Conditions of his release include surrendering his passport and not having contact with alleged victims or witnesses. A trial date has not yet been set.

Under federal law, both sexual abuse and abusive sexual contact are punishable upon conviction by any sentence, including life in prison.