TULSA, Okla.--(BUSINESS WIRE)--Gateway Mortgage Group, a privately held mortgage company offering originations, servicing and correspondent lending, has announced the addition of Debbie Booth and Rick Martinez to its Correspondent Lending team of regional sales managers. Debbie Booth has been in the mortgage banking industry for more than 25 years and in correspondent lending since 1997. She joins Gateway’s Correspondent Division as a regional sales manager covering the states of Louisiana, Mis