Mark Cuban is best known as a panelist on the reality TV show “Shark Tank” and for his ownership of the NBA’s Dallas Mavericks. Now, the billionaire investor is switching gears. This will be his last season on “Shark Tank,'' and he recently sold a majority stake in the Mavericks. Instead, he’s focusing more on an industry he wants to disrupt: healthcare.   Further Reading: -Mark Cuban Enters Elon Musk’s Echoverse of Madness -Mark Cuban Is Set to Sell Majority Stake in Dallas Mavericks to Adelson Family  -Mark Cuban Has a New Job: Working at an Online Discount Pharmacy  Learn more about your ad choices. Visit megaphone.fm/adchoices