Marci Guillemette, MBA, CPHT

Vice President, Pharmacy Audit Services


Marci is a Vice President, Pharmacy Audit Services on the Pharmacy Analytics team. Joining Excelsior Solutions in 2022, Marci’s areas of expertise are pharmaceutical auditing, leadership, change management, project management and process improvement.

Marci has nearly 20 years of experience as an analyst and leader. Her previous positions include Senior Director of Commercial Audit for OptumRx and Director, Audit Services at Pharmaceutical Strategies Group.


Lake Forest College, Bachelor of Arts in Business and French

DePaul University, Master of Business Administration in Finance, Leadership & Change Management


Certified Pharmacy Technician

Mental Health First