ChamberMaster Beneficial In-Home Care Healthcare Beneficial In-Home Care Visit Website 727 S Grand Ave Pullman, WA 99163 (509) 339-7733 (844) 637-9911 (509) 339-7722 (fax) Hours: Monday-Friday 8am-5pm About About Beneficial In-Home Care has a mission to maximize our clients' physical health and their sense of ''mental well-being'' while remaining in the comfort of their own home.