Dr. Shakil Afridi was accused of running a fake vaccination program that helped confirm Bin Laden's presence in the town of Abbottabad, Dawn News reported.
Bin Laden was killed in a raid by U.S. Navy SEALs a compound in the town a month later.
Afridi was sentenced to 33 years in prison for colluding with the terror group Lashkar-i-Islam and its chief Mangal Bagh in 2012.
The BBC reported that Pakistani court Friday decided to reduce Afridi's sentence by 10 years.
Afridi's lawyer, Qamar Nadeem, said that he may file another appeal in the case.