Choose the Right Medicare Plan with Expert Advice. Larry Gaskill Insurance of Sterling 815/535-4411 covenant@essex1.com Representing leading companies such as UnitedHealthcare SM-ST 1919063 Choose the Right Medicare Plan with Expert Advice. Larry Gaskill Insurance of Sterling 815/535-4411 covenant@essex1.com Representing leading companies such as UnitedHealthcare SM-ST 1919063