RAPID CITY, S.D. (AP) — A judge says a 71-year-old South Dakota doctor must serve prison time for income tax evasion.

Dr. Dennis Wicks, of Custer, pleaded guilty earlier to creating at least two fictitious entities to hide his income and personal assets to avoid paying income taxes over the course of several years.

U.S. District Judge Jeffrey Viken on Friday sentenced Wicks to 14 months in prison and ordered him to pay back about $110,000.

The Rapid City Journal reports that Viken told Wicks to report to prison on Jan. 14.

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