ROCHESTER — A retired Mayo Clinic doctor was one of two people who died in a plane crash in Brooklyn Park, Minn., Saturday, April 25,
report.
Dr. Joseph Cass retired from Mayo Clinic in Rochester in May 2017, according to a
Mayo Clinic Alumni Association article
on Cass’ seventh Teacher of the Year Award, which he also received that year.
Cass first joined Mayo Clinic in 1983, following his
there. He left in 1986 and spent nearly two decades practicing medicine in Sioux Falls, South Dakota, and the Twin Cities. Cass returned to Mayo Clinic in 2005.
When asked about his retirement, Cass said in the alumni article that “[a]s long as I’m learning something, I’ll be content.”
“My wife and I are moving to northern Minnesota,” Cass continued. “Mostly I will putz around, do some welding and woodworking and take some flying lessons.”
Cass was believed to be the pilot of the small plane that crashed in Brooklyn Park shortly after takeoff. Another passenger, North Dakota state
a Democrat representing the Fargo area, died in the crash. Minnesota Public Radio
that the two were romantic partners.
“Liz served her state and community with care and compassion, from her service in the Legislature and on the state’s Human Trafficking Commission to her work on education, habitat and immigration,” said North Dakota Gov. Kelly Armstrong
released Saturday.

Dené K. Dryden is the Post Bulletin’s health reporter. Readers can reach Dené at 507-281-7488 and ddryden@postbulletin.com.