50 Most Influential Physician Executives – 2018
Chief health officer, CVS Health
Brennan led the charge in CVS developing new programs that helped boost medication adherence by 7%. He also started programs to improve patient safety, leading to a 25% drop in errors across mail order and retail pharmacies. He also ushered in a new artificial-intelligence technology at the company's Minute Clinics aimed at improving the customer experience and speeding up interactions.