Greg Bruce, a former vice president of UMC, will report to prison near Florence, Colorado at 2 p.m. Friday.
Bruce was sentenced in September to 51 months in prison and 3 years probation for mail fraud.
He will also pay more than $730,000 in restitution to UMC.
Bruce conspired with Rudolph Mata to submit false bills to the hospital over a four year period.
Mata was sentenced last week to 18 months in prison.
He is scheduled to begin serving his sentence on Nov. 22.
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