Gateway Mortgage Group, LLC Share: Financial & Investment Services Gateway Mortgage Group, LLC Visit Website 244 South Gateway Place Jenks, OK 74037 918-712-9000 About Map About Founded in 2000 by J. Kevin Stitt. Full service mortgage lender and servicer. Engaged in loan origination, purchasing and servicing. What's Nearby? Distance: 5 10 15 20 25 50 mi.