Some of our key people share their thoughts about the Hepatitis B Foundation’s history, progress and our work.


Video vignettes, or short clips, with an organization’s key people are a great way to get a sense of its culture and accomplishments. Below are a few clips. We’ll continue to add more throughout the year. We will also share these segments via our social media accounts. Please follow us on Facebook, Twitter, YouTube and Instagram. Links are available at the bottom of this page. We will feature a special video that will debut at our Crystal Ball gala on April 30. The full video will then be available on this website.

Timothy M. Block, PhD, Co-Founder, President

In 1991, Joan Block (RN & BSN) and Tim Block (PhD), along with their friends Jan and Paul Witte, created the Hepatitis B Foundation and they both were hands-on leaders of the organization since day one. Joan retired as executive director three years ago, but Tim remains president and CEO.

Su Wang, MD, MPH, Board Member

Not only is she one of the Foundation’s Scientific and Medical Advisors and a member of our Board of Directors, Dr. Wang is among the 2 million of Americans living with hepatitis B. She also treats many people with hepatitis B in her New Jersey medical practice.

Chari Cohen, DrPH, MPH, Senior Vice President

A longtime leader of the Foundation, Dr. Cohen directs our public health, patient education, partner collaborations and associated operations. She has been a key figure in all of the many new initiatives launched by the Foundation over the past two decades.

Jim Greenwood, Former Congressman & Bio CEO

Jim was a state senator representing parts of Bucks and Montgomery counties when the Hepatitis B Foundation was launched. A future Congressman and CEO of BIO, a top international trade association, Jim has provided invaluable support for years.


The Hepatitis B Foundation is a national nonprofit dedicated to finding a cure and improving the quality of life for those affected by hepatitis B worldwide. Our commitment includes funding focused research, promoting disease awareness, supporting immunization and treatment initiatives, and serving as the primary source of information for patients and their families, the medical/scientific community and general public.



We ask that you to consider helping the Foundation as a donor or a volunteer.


For 30 years we have continued our mission of finding a cure and improving the quality of life for those affected by hepatitis B worldwide.



We believe that nobody should die from hepatitis B. Your gift will help the Hepatitis B Foundation fulfill its mission to find a cure and improve the lives of those affected worldwide through research, education, public health and patient advocacy.