[5] He went onto do a postdoctoral fellowship in health economics at University of Chicago with mentors David O. Meltzer and Robert Gibbons; while there, Padula completed an M.S.

Padula, in collaboration with Hopkins colleagues Jerry Anderson, Jeremy Greene, and Vincent DeMarco drafted legislation to place checks and balances on skyrocketing prices of pharmaceuticals.

This policy, known as Maryland's Anti-Price-Gouging Law was an effort to prevent bad actors such as Martin Shkreli from arbitrarily raising the prices of drugs without consideration for consumer affordability.

During which time he helped introduce the concept of a Standardized Pressure Injury Prevention Protocol checklist to United States Congress, which later passed legislation updating the Military Construction and Veterans Affairs and Related Agencies Appropriations Act, 2015 (H.R.

4355) to establish the checklist as law that United States Department of Veterans Affairs facilities should adhere to in order to keep patients safe from harm.

He has taught vaccine economics courses with grants from the Bill & Melinda Gates Foundation since 2017 in Africa, Southeast Asia, Europe and North America.