Former “Grey’s Anatomy” star Patrick Dempsey is the subject of an online scam that aims to steal money from unsuspecting fans.

The Golden Globe-nominated actor took to Twitter on Monday to warn that people have been impersonating him online and asking fans to send money to him or his non-profit charity organization.

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The actor, best known for playing Dr. Derek “McDreamy” Shepherd in the popular ABC hospital drama, also told fans to report any fake pages to the relevant authorities.

“Patrick puts his heart and soul into everything, but he doesn’t himself solicit funds in that way (through social media),” Nancy Audet, a spokesperson for the Dempsey Centers in Lewiston and Portland, told the Sun Journal.

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Dempsey, who was born in Maine, set up his non-profit to help individuals and families impacted by cancer, but Wendy Tardif, executive director for the Dempsey Centers, echoed Audet when speaking to the Sun Journal:

“Anyone who wants to make a donation to our organization is encouraged to do so by going to our website, www.dempseycenter.org,” Tardif said. “I want to reiterate that Patrick Dempsey would never solicit donations through any of his social media accounts.”

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After reading a number of comments regarding the scam on his official Facebook page, Dempsey wrote a message to his fans, thanking them for sharing the details.

“Just to be clear, I do not ever direct message people from my social media accounts,” he stated. “I do NOT have messenger for FB. If you receive a message, it is not me. Please do not send any money to anyone who is asking and saying they are me.”