WASHINGTON, July 24 -- Personnel changes in public policy organizations, colleges and government agencies - July 24, 2025: * * * HIGHMARK: Mark Walter has been promoted to vice president of sales at Highmark Blue Cross Blue Shield, where he will be responsible for developing and executing the sales strategy for Highmark's New York markets, leading a team to drive business, solutions, and services, and overseeing account retention and client relationships. Walter has been with Highmark for 18 y more ST