Joy-Ann Reid

MSNBC Correspondent, Political Author & Former Host of "The Reid Report"

Joy-Ann Reid Says Having Her Show Canceled ‘Liberated Her’

Brett Graham

Managing director and partner, Leavitt Partners; Expert on Health Insurance Exchanges

Marty Makary, M.D.

Healthcare Futurist, Johns Hopkins Surgeon & Professor of Public Health

Ken Thorpe

Professor and Chair in the Department of Health Policy and Management, Emory University's Rollins School of Public Health

Debra Maggart

Politician & Former Republican Caucus Whip of the Tennessee House of Representatives

Kate Obenshain

Motivational Speaker, Author, Defender of Conservative Principals & Regular Guest on "Fox News"

Jonathan Bush

Technology Entrepreneur; Co-Founder & Former CEO of athenahealth

Lynsey Addario

American Photojournalist; Contributor for National Geographic & Time Magazine

Keller Rinaudo

Co-founder and CEO of Zipline

Rudolph E. Tanzi

Alzheimer's Disease Researcher; Expert on the Genetics of Neurological Disease; Professor of Neurology at Harvard Medical School

Dave deBronkart

Kidney Cancer Survivor & Patient Advocate Known as "e-Patient Dave"

Farzad Mostashari, M.D.

Visionary Health Care Thought Leader and U.S. National Coordinator for Health Information Technology (2011-2013)

Gary Slutkin

Epidemiologist & Founder/Executive Director of Cure Violence

Tim O'Reilly

Founder & CEO of O'Reilly Media

David Nico

Author, Health Strategist & Leadership Well-Being Expert

Dennis Kucinich

Fox News Contributor, Former Ohio US Representative and Two-Time Presidential Candidate

Neil Giuliano

Gay Rights Activist & President and CEO of Greater Pheonix Leadership

Ira Byock

Dartmouth-Hitchcock Medical Center

Matthew C. Nisbet

Professor of Communication, American University

Sandra Aamodt

Neuroscientist