Quick Links Quick Facts about DGF Quick Facts on Childhood Cancer Standards for Charity               Quick Facts about DGF   The Desi Geestman Foundation (DGF) is a non-profit California corporation. The IRS has certified DGF as a tax-exempt 501c3 charity, which means that all donations made to DGF are tax exempt to the donor to the maximum amount permitted by law.   501 c3 form 990 form