Benjamin Zack
Nathan Clark Ward appears in court in Farmington for a brief initial appearance on Friday, Aug. 11, 2017.

FARMINGTON — A Bountiful gynecologist has again admitted to sexually abusing a 13-year-old girl.

Nathan Clark Ward pleaded guilty Thursday to the same charge he briefly admitted to last year.

In August, the 57-year-old Ward quickly withdrew the plea when he learned the judge planned to stack a prison sentence of 15 years on top of time he is already serving in the federal system.

Then on Thursday, just a few days before his trial was set to begin, Clark entered the new guilty plea to aggravated sexual abuse of a child, a first-degree felony, in Farmington's 2nd District Court.

He did not indicate why he decided to change his plea at the last minute.

As part of an agreement with prosecutors, four other felonies he faced were dismissed. Earlier this month, prosecutors had dropped another five felony charges he originally faced, court documents show.

It was unclear Thursday whether Ward is again expected to face a consecutive sentence.

Susan Hunt, a deputy Davis County attorney, said the victim in the case approved the deal. Ward had "a position of special trust" to the girl, prosecutors allege. The Deseret News generally does not identify victims of sexual assault.

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A different judge in July ordered Ward to nearly 22 years in a federal prison in Colorado for streaming video of the same girl as he removed her clothing. Ward is appealing the sentence.

Police began investigating in November 2016 when uploads of possible sexually exploitative images of children were detected at Bountiful's Lakeview Hospital, court documents show.

Sentencing is set for Feb. 14.

Correction: An earlier version incorrectly said prosecutors dismissed five felonies as part of the plea deal. Four felonies were actually dismissed.