Meet Our Team

Meredith Ford O'Neal

Chief Executive Officer

meredith.oneal@johnritterfoundation.org

Meredith Ford O’Neal

Chief Executive Officer

Staff

Ellen Hostetler

Chief Science Officer

Jenn Vacirca

Finance Director/Executive Assistant

Bella Marin

Patient and Advocacy Coordinator

Amy Yasbeck

Chairman and Founder

Board Members

Laura Derr

Adam Dinkes

Kent Johnson

Dianna Milewicz

Nancy Petrera

Bridget Porter (Metz)

Cindy Retterer

Joss Richard

Carly Ritter Rappold

Jason Ritter

Tyler Ritter

Donald Schwartz

Whitney Strauss

Carolyn Wang

Gregory Weaver

Headshot of Dr. Dianna Milewicz, a blonde doctor wearing a red blazer

Dianna Milewicz, MD, PhD
Chairman
The University of Texas
Health Science Center at Houston

Professional Advisory

Ali Azizzadeh, MD
Cedars Sinai

Joanna Chikwe, MD
Cedars Sinai

Anthony Estrera, MD
The University of Texas
Health Science Center at Houston

John Elefteriades, MD
Yale School of Medicine

Kim Eagle, MD
University of Michigan Health Center

Loren Hiratzka, MD
Retired
Ā 
David Liang, MD, PhD
Hoag Medical Group
Ā 

Robert Ohle, MD
Health Science North-Ontario

Maral Ouzounian, MD, PhD
Toronto General Hospital

Virendra Patel, MD, MPH
Columbia University

Siddharth Prakash, MD, PhD
The University of Texas
Health Science Center at Houston

Eric Roselli, MD
Cleveland Clinic

Sherene Shalhub, MD, MPH
Oregon Health & Science University

Ā 

Working with Us

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