Dr Freda Lewis-Hall is the senior physician at drug company Pfizer . As Chief Medical Officer , she is responsible for regulating the company 's medical work . She has been a member of the board since 2009 and was appointed to it by President Barack Obama in 2013. The biggest drugmaker in the world , Pfizer 's brands include Advil , Robitussin , Viagra , Xanax and Lipitor . A psychiatrist trained at Johns Hopkins and Howard University , she has three children .
Dr Freda Lewis-Hall is the senior physician at drug company Pfizer . As Chief Medical Officer , she is responsible for regulating the company 's medical work . She has been a member of the board since 2009 and was appointed to it by President Barack Obama in 2013. A psychiatrist trained at Johns Hopkins and Howard University , she has three children .