Team

Thomas A. Zalewski

Thomas A. Zalewski joined the Company in April 2026. Mr. Zalewski comes to Aquestive after several years with Day Pitney as Chair of the firm’s Healthcare and Life Sciences practice where he managed a wide range of strategic transactions, including mergers and acquisitions, joint ventures and strategic alliances in the life sciences industry. Additionally, Mr. […]
Professional headshot of John Oppenheimer

John Oppenheimer, M.D.

Dr. John Oppenheimer is the Director of Clinical Research at Pulmonary and Allergy Associates as well as Clinical Professor of Medicine at UMDNJ-Rutgers He is board certified in Internal Medicine and Allergy and Immunology.  He trained and was on faculty at the National Jewish Center in Denver Colorado. Dr. Oppenheimer has participated in over 100 […]
Professional headshot of Jay Lieberman, M.D.

Jay Lieberman, M.D.

Dr. Lieberman is currently an Associate Professor at the University of Tennessee Health Science Center and a practicing physician at LeBonheur Children’s Hospital. There he serves as the acting allergy fellowship training program director and as the principal investigator for numerous clinical trials in the field of allergy focusing on food allergy. He is the […]
Professional headshot of Ruchi Gupta, M.D. MPH

Ruchi Gupta, M.D. MPH

Ruchi Gupta, MD, MPH, is a Professor of Pediatrics and Medicine at Northwestern University Feinberg School of Medicine and a Clinical Attending at Ann & Robert H. Lurie Children’s Hospital of Chicago. Dr. Gupta has 17 years of experience as a board-certified pediatrician and health researcher and currently serves as the founding director of the […]

Matthew Greenhawt, M.D.

Dr. Greenhawt is an internationally recognized expert in allergy and immunology with deep expertise in food allergy, anaphylaxis, patient-centered care, and health services and health policy research. He brings extensive clinical, research, and advocacy experience to Aquestive. Dr. Greenhawt most recently served as Chief Medical Officer of the Asthma and Allergy Foundation of America (AAFA), […]
Professional headshot of David BK Golden, M.D.

David BK Golden, M.D.

Dr. Golden did his medical training at McGill University, and his fellowship in Allergy-Clinical Immunology at Johns Hopkins University. He is now an Associate Professor of Medicine (part-time) at Johns Hopkins, where he directed a program of research studies on insect sting allergy and anaphylaxis for 30 years. He has published numerous research articles, chapters […]
Professional headshot of David M. Fleischer, M.D.

David M. Fleischer, M.D.

Dr. David Fleischer completed his undergraduate training at the University of Pennsylvania, medical degree training at Emory University School of Medicine, and both Pediatric Residency and Pediatric Allergy/Immunology Fellowship training at The Johns Hopkins University School of Medicine. Dr. Fleischer is currently the Section Head of Allergy & Immunology at Children’s Hospital Colorado (CHCO) and […]
Professional headshot of Carlos Camargo, M.D.

Carlos Camargo, M.D.

Dr. Carlos Camargo is a Professor of Emergency Medicine, Medicine, and Epidemiology at Harvard University, and the Conn Chair in Emergency Medicine at Massachusetts General Hospital. He has over 1,200 publications, with an H-index of 149. He founded and leads the Emergency Medicine Network (EMNet), an international research collaboration with ~250 hospitals. EMNet focuses on […]
Professional headshot of David Bernstein, M.D.

David Bernstein, M.D.

David Bernstein, MD, is Professor Emeritus of Medicine in the Division of Immunology and Allergy at the University of Cincinnati College of Medicine where he is co-director of the Allergy Fellowship training program. He is former Principal Investigator of a training grant for 3 funding cycles through the National Institute of Allergy and Infectious Diseases […]
Professional headshot of Marco Taglietti, M.D.

Marco Taglietti, M.D.

Marco Taglietti, M.D. has served as a member of our Board since February 2021. Dr. Taglietti is currently the Chief Executive Officer of NanoNewron, a pioneering biotechnology company developing innovative, humanized biologics that cross the blood-brain barrier (BBB) to treat Alzheimer’s and other central nervous system (CNS) neurodegenerative diseases. Dr. Taglietti previously served as Director, […]