The U.S. Attorney's Office says 62-year-old Joseph J. Yurigan of New Alexandria, Pa., also must pay more than $836,000 in restitution. A minimum of about $501,600 must be paid before he is sentenced.
Ihlenfeld's office says Yurgian submitted a fraudulent claim to a health care program and evaded taxes for 2008.
Yurigan operated the Weirton Chiropractic Clinic and the Wheeling Spine Center.
He entered his pleas Tuesday in U.S. District Court in Wheeling .