The Jersey Shore star has completed a two week stint in Utah's Cirque Lodge, where he received treatment for his addiction to prescription drugs and alcohol-related issues.
According to gossip website TMZ, the 29-year-old reality star has now flown back to his home in New Jersey.
'Set the record straight'
Last month, Mike confessed he was addicted to prescription pills and was getting help.
In a post on his Facebook page, the reality TV star said: "I wanted to set the record straight. I have voluntarily taken steps to get control of a prescription medication problem I had due to exhaustion.
"I have spent the past several weeks getting treatment for this problem and recuperating from my work and appearance schedule. I appreciate my fans support and love you guys."
A representative for The Situation - who recently underwent a promotional tour of Australia - had initially claimed the reality TV star wasn't being treated for drug abuse.