HJFMRI Leadership

Asian man in his mid-fifties sits in front of an American flag. He is wearing a black suit with a red tie.

Joseph Caravalho, Jr., M.D.

President of HJFMRI and President and CEO of HJF

Dr. Caravalho is responsible for the guidance and leadership of HJF and HJFMRI.

Tiffany Hamm, Ph.D.

Vice President, Global Research Development

Dr. Hamm leads HJF’s Global Operations Portfolio, overseeing scientific management of programs and research centers that are part of the HJF’s global efforts. She has more than 16 years of expertise working with nonprofits and U.S. government-funded institutions in executing global public health programs.

Christopher Bayer, PMP

Director, International Operations

Christopher Bayer has worked for HJF and its subsidiaries for over 20 years. He now serves as the Deputy Portfolio Leader for Global Operations and the Director of International Operations.

Sandhya Vasan, M.D.

Vice President, Global Infectious Diseases Research

In 2019, Dr. Sandhya Vasan became the Principal Investigator representing HJF for MHRP’s cooperative agreement (CA) with the DoD. In addition to overseeing HJF components of the CA, she provides key leadership for MHRP’s wide array of basic and clinical studies. She has been with MRHP since 2011, initially in Bangkok, Thailand.

White man in grey suit stands outside office building

Paul Zaremba

Deputy Portfolio Leader & Chief of Operations for HJF Components of Military HIV Research Program (MHRP) & Emerging Infectious Disease Branch

Paul Zaremba has spent the majority of his career between HJF, MHRP, and WRAIR where he served in various management roles leading finance, international operations and business development teams. 



HJFMRI Board of Directors

Corey Hastings, MBA, CPA

Senior Vice President, Chief Financial Officer and Treasurer of HJF

Corey Hastings is the Chairman of the Board of Directors of HJFMRI. 

Elizabeth "Betsy" Folk

Executive Vice President and Chief Operating Officer

Betsy Folk is a member of the Board of Directors of HJFMRI. 

Merlin Robb, M.D.

Vice President & Chief Medical Officer of HJF

Dr. Merlin Robb is a member of the Board of Directors of HJFMRI.