Kezmarsky is undergoing stem cell transplants in his battle against multiple myeloma.
The rare form of cancer affects the plasma cells and bone marrow, said Schepisi, who created a Go Fund Me page for Kezmarsky.
"Ben and his family face mounting medical expenses and need all of our help," Schepisi wrote. "Ben is one of the most generous people I know and he was very reticent in allowing me to even put this page up on his family's behalf."
Kezmarsky oversees the Mahwah School Foundation.
"Ben does it with a big smile and never wants anything in return," Schepisi said.
The goal is to raise $30,000. In two days, supporters pledged half that total.
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