By Elise Viebeck - 04/19/13 09:45 PM EDT
"Medical bills are going to start rolling in," reads a description of the fund. "Let's get a head start on helping out Bauman and his family!"
Monday's attack killed three and wounded more than 170, some of whom will be double amputees like Bauman.
He will reportedly receive prosthetic legs through nonprofit 50 Legs.