I would recommend contacting the IRS right away to ensure that your refund check is delivered to the appropriate address. Here's how to contact the IRS:
Call the IRS: 1-800-829-1040 hours 7 AM - 7 PM local time Monday-Friday
When calling the IRS do NOT choose the first option re: "Refund", or it will send you to an automated phone line.
So after first choosing your language, then do NOT choose Option 1 (refund info). Choose option 2 for "personal income tax" instead.
Then press 1 for "form, tax history, or payment".
Then press 4 "for all other questions."
Then press 2 "for all other questions." It should then transfer you to an agent.