Dr. Jack Kevorkian has died at 83, RadarOnline.com has learned.

The controversial doctor passed at Beaumont Hospital in Royal Oak, Michigan  on Friday, where he was staying for treatment for kidney and heart problems.

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“It was peaceful, he didn’t feel a thing,” his lawyer Mayer Morganroth told the Detroit Free Press.

Since 1990, Kevorkian had presided over an estimated 139 assisted suicides, earning him his macabre nickname.

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After winning an Emmy for his portrayal of Jack "Dr. Death" Kevorkian, Al Pacino is taking on another man convicted of murder, Phil Spector, RadarOnline.com has learned.

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Spector, the legendary music producer and composer, was convicted of second degree murder last year and is serving 19 years to life for the shooting death of starlet Lana Clarkson.

Pacino became friends with Kevorkian during the making of that biopic.  It's not known if he's met Spector, who became famous for his bizarre assortment of wigs during his two trials (the first ended in a mistrial).

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The HBO project will likely be on the cable net's schedule by the end of 2011.

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