SALT LAKE CITY — A federal jury has convicted a former Ogden dentist of five tax charges for what prosecutors said were his efforts to avoid paying $4.2 million in taxes over a multiyear period.

Jurors on Thursday evening in U.S. District Court found Derald Wilford Geddes guilty of tax evasion, filing three false tax returns and engaging in a corrupt endeavor to obstruct the Internal Revenue Service.

Charging documents filed in 2015 said Geddes schemed to dodge $4.2 million in personal and corporate tax liability from 1997 to 2005.

The corrupt endeavor charge alleged that from 1998 through 2014 Geddes transferred income, assets and property among four entities he created and submitted phony documents to the IRS, including corporate tax returns claiming his practice had no gross receipts in certain tax years.

The charges also alleged Geddes submitted false returns for tax years 2011-13.

Geddes faces sentences of up to five years in prison for tax evasion and three years on each of the other four charges. Sentencing is set for May 31 before Judge Tena Campbell.

State professional licensing records show Geddes’ dental license expired in 2016.

In a separate action, federal attorneys are pursuing a civil complaint against Geddes seeking to collect $994,000 from him via federal tax liens and foreclosures.

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