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Board Officers

Joel Rosen, Esq

Timothy M. Block, PhD

Louis P. Kassa, III, MPA
Executive Vice President/Chief Operating Officer

Chari Cohen, DrPH, MPH
Senior Vice President

Catharine Williams, MGA
Vice President

Joseph Hediger

Wayne Yetter



Timothy M. Block, PhD., BIO
Co-Founder and President, Hepatitis B Foundation
President and Director, Baruch S. Blumberg Institute

Louis P. Kassa, III, MPA, BIO
Executive Vice President/Chief Operating Officer

Chari Cohen, DrPH, MPH, BIO
Senior Vice President

Jean Holmes, MBA, BIO
Vice President, Institutional Advancement

Robert Gish, MD, BIO
Medical Director


Board of Directors & Staff

Board of Directors

Timothy M. Block, PhD, BIO
Co-Founder and President, Hepatitis B Foundation
President and Director, Baruch S. Blumberg Institute

Stanley Broadbent
Retired Managing Director, The Glenmede Trust

Carol Brosgart, MD
Clinical Prof. of Medicine, UC San Francisco

Nathaniel Brown, MD
Retired biotech/pharma executive (focus on HBV and HCV)

Loren Danzis, Esq
Partner, Fox Rothschild LLP

Craig Esterly, MBA
Co-founder and managing member
SD Asset Group

Anthony Ford-Hutchinson, PhD
Former senior VP, vaccine research
Merck & Co.

David A. Gruber, CPA
Owner, Gruber Administrative Services, LLC

Joseph Hediger
Vice President of Finance
Children's Hospital of Philadelphia

Raman Kapur
Chairman, Transition Patient Services, LLC

Mark Petty
Operating Partner, Tinicum, LP

Lewis Roberts, MB, ChB, PhD
Professor of Medicine, Mayo Clinic

Joel Rosen, Esq
Managing Partner
High Swartz Attorneys at Law

Thomas Shenk, PhD
Elkins Professor, Dept. of Molecular Biology
Princeton University

Walter Tsou, MD, MPH
Adjunct Professor, University of Pennsylvania
Former City Health Commissioner of Philadelphia

Su Wang, MD, MPH, FACP
Medical Director, Asian Center for Health

Catharine Williams, MGA

Wayne Yetter
Founding CEO of Astra Merck and Novartis (USA)


Scientific and Medical Advisors

Harvey Alter, MD
Former Chief, Infectious Disease Section, Department of Transfusion Medicine, National Institutes of Health, Bethesda, MD

Timothy M. Block, PhD 
Co-Founder and President, Hepatitis B Foundation and Baruch S. Blumberg Institute, Doylestown

Nathaniel Brown, MD
Retired Biotech/Pharma Executive (focus on HBV and HCV), San Francisco

Carol Brosgart, MD
Clinical Professor of Medicine, Division of Global Health, UC San Francisco

Francis Chisari, MD
Emeritus, Scripps Research Institute

Raymond Dwek, DPhil, FRS
Professor and Founder, Glycobiology Institute at the University of Oxford, Oxford, UK

Anthony Ford-Hutchinson, PhD
Former Merck Sr. VP, Vaccine Research

Lawrence Friedman, MD
Gastroenterologist, Massachusetts General Hospital

Don Ganem, MD
Professor Emeritus, UC San Francisco

Robert G. Gish, MD
Medical director, Hepatitis B Foundation, and principal, Robert G Gish Consulting LLC

Hie-Won L. Hann, MD
Professor and director, Liver Disease Prevention Center, Thomas Jefferson University Hospital, Philadelphia

Stephen Locarnini, MD, PhD
Head, Molecular Research, Victorian Infectious Diseases Reference Labs

Anna Lok, MD
Alice Lohrman Andrews Research Professor of Hepatology, Director of Clinical Hepatology, Assistant Dean for Clinical Research, University of Michigan

William Mason, PhD
Emeritus, Fox Chase Cancer Center, Philadelphia, PA

Brian McMahon, MD
Scientific and Clinical Director, Liver Disease and Hepatitis Program, Alaska Native Medical Center, Fairbanks, AK

Edith Mitchell, MD
Program Leader, GI Oncology
Director, Center to Eliminate Cancer Disparities
Clinical Professor, Jefferson University

Robert Perrillo, MD
Senior Research Hepatologist, Hepatology Division of Baylor University Medical Center, Dallas, and Adjunct Professor of Medicine, University of Texas Southwestern 

Lewis Roberts, MB, ChB, PhD
Professor of Medicine, Mayo Clinic

Kenneth Rothstein, MD
Director of Regional Outreach and Regional Hepatology
Professor of Clinical Medicine
Penn Medicine

Raymond Schinazi, PhD
Professor, Pediatrics and Chemistry, and Director of the Laboratory of Biochemical Pharmacology, Emory University; Founder of RFS Pharma

Thomas Shenk, PhD
Elkins Professor, Dept. of Molecular Biology, Princeton University

John Tavis, PhD
Professor, Molecular Microbiology and Immunology
Saint Louis University School of Medicine

Norah Terrault, MD
Professor, Chief of Gastroenterology and Liver Diseases, University of Southern California

Board Members Emeritus

Joan Block, RN, BSN

Alan Brownstein, MPH

Janine Witte


Honorary Board Members

Anne Blumberg

Jane Blumberg


In Memoriam

Baruch Blumberg, MD, DPhil
Nobel Laureate and Distinguished Scholar of the Hepatitis B Foundation (2011)

W. Thomas London, MD
Emeritus, Fox Chase Cancer Center (2017)

Bud Tennant, DVM
College of Veterinary Medicine, Cornell University (2016) 

Paul Witte
Co-Founder (2021)


HBF Staff

Chari Cohen, DrPH, MPH 
Senior Vice President

Jean Holmes, MBA
Vice President, Institutional Advancement

Maura Delaney 
Development Associate 

Catherine Freeland, MPH 
Program Director, Public Health

Yasmin Ibrahim, MD, PhD, MBA
Program Manager, Public Health

Michaela Jackson, MS
Prevention Policy Manager

Maureen Kamischke
Patient Engagement and Consult Specialist

Shannon Kappre
Development Manager

Kate Moraras, MPH
Deputy Director, Public Health

Megan Pierce
Director of Events

Rhea Racho, MPA
Program Manager, Public Policy

Abby Showalter 
Social Media and Communications Manager

Lois Sinclair 
Administrative Coordinator/Executive Assistant to the SR VP 

Edward F. Tate III, MS
Director, Communications & Marketing

Evangeline Wang
Program Coordinator, Public Health

Beatrice Zovich, MPH
Program Coordinator, Public Health


Finance and Operations

Debbie Blough 
Accounting Assistant/Receptionist 

Mark Hansen 

Louis P. Kassa, III, MPA 
Executive Vice President/Chief Operating Officer

Konrad Kroszner
Director of Systems & Engineering

Judith Marchand
Executive Administrator

Patti McAloon, MBA 
Director of Accounting & Human Resources 

Montana McAlorum
Communications & Marketing Coordinator

Dianna Miller

Loretta Molle
Director of Business Administration 

David Ray
Technology Manager  

Ray Savage
Director of Facilities 

Tammy Spruill
Lab & Safety Manager

Nancy Young
Grants Manager