The 40-year-old singer, who kicked off his fall tour at Chesapeake Energy Arena in Oklahoma, also his home state, was joined by his girlfriend Gwen Stefani while donating at the hospital, reported People magazine.
"They don't turn any kids away. You come in there, you have a problem, they don't turn anybody away, so I thought, 'That's a place that needs some money.' Let's all do the right thing. This is our money, Oklahoma," he said.
Shelton also performed a surprise duet with Stefani to their song, "Go Ahead and Break My Heart" at the concert.
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