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Medical Advisory Council

Accumen’s Medical Advisory Council is comprised of physician subject matter experts that provide clinical guidance across our best-in-class service lines, serving as a resource for Accumen’s clients throughout the partnership. This diverse group of physicians are recognized thought leaders with extensive experience in patient blood management, transfusion medicine and test utilization.

Medical Advisory Council

Stacey Valentine, MD, MPH

Medical Director, Pediatrics PBM
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Patricia Ford, MD

Medical Director, cPBM

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Andrew Fletcher, MD, MBA, CPE, CHCQM, FCAP


Medical Director, Laboratory Stewardship

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Irwin Gross, MD

Sr. Medical Advisor, cPBM
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Aryeh Shander, MD, FCCM, FCCP, FASA

Medical Director, cPBM
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Pierre (Peter) Tibi, MD

Medical Director, cPBM

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Stacey Valentine, MD, MPH

Medical Director, Pediatrics PBM
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Stacey L. Valentine, MD, MPH is a pediatric critical care physician at UMass Memorial Medical Center and an associate professor at University of Massachusetts Medical School. Her clinical interests include anemia, blood transfusions, and pediatric acute lung injury. Dr. Valentine chose to pursue medicine early on, earning her medical degree from the University of Vermont School of Medicine, after which she pursued residency training at Boston Children’s Hospital for pediatrics. During her residency and fellowship, Dr. Valentine took care of patients who made a significant impact on her. Dr. Valentine began to focus more and more on ways to use patient blood management to not only treat anemia, but also to potentially avoid blood transfusions when possible. The Pediatric Critical Care Transfusion and Anemia Expertise (TAXI) was born out of discussions with the Pediatric Critical Care Blood Research Network. Dr. Valentine co-led the initiative, the goal of which was to create international recommendations for transfusion in critically ill children. TAXI led to the start of research into blood transfusions in pediatric critical care patient and the TAXI team developed more than 100 recommendations for pediatric transfusion practice. Dr. Valentine is a nationally recognized speaker, published author, and respected thought leader in the field of pediatric Patient Blood Management.

Patricia Ford, MD

Medical Director, cPBM

Dr. Ford currently serves as Director for both the Peripheral Stem Cell Transplant Program and the Center for Bloodless Medicine and Surgery at the University of Pennsylvania Health System. She is also a Founding Member and Past President of the Society for the Advancement of Patient Blood Management (SABM). Additionally, she has authored numerous publications about Patient Blood Management.  

Dr. Ford received her doctorate from the University of Miami, completed her residency at the Graduate Hospital, and fellowship at Fox Chase Cancer Center. She was recognized in Philadelphia magazine’s annual Top Docs issues for 2018 and 2019, by America’s Top Doctors for 2017, and Best Doctors in America from 2005-2018. 

Irwin Gross, MD

Sr. Medical Advisor, cPBM
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Irwin Gross is Senior Medical Director at Accumen Inc. Dr. Gross is a nationally recognized speaker and published author in Patient Blood Management and Transfusion Safety. Prior to his role as Senior Medical Director at Accumen, Dr. Gross served as the Chief of Pathology at Eastern Maine Medical Center (EMMC, where he started the patient blood management program in 2006), Medical Director of Laboratories at Affiliated Laboratories, Inc., and as Medical Director of Transfusion Services from 1987 through 2014.

Aryeh Shander, MD, FCCM, FCCP, FASA

Medical Director, cPBM
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Dr. Shander is one of the world’s leading experts on bloodless medicine and patient blood management. He is Emeritus Chair of the Department of Anesthesiology, Critical Care Medicine, and Hyperbaric Medicine at Englewood Health in Englewood, NJ as well as an Adjunct Clinical Professor in the Department of Anesthesiology, Medicine and Surgery at Icahn School of Medicine at Mount Sinai in New York City, and a Clinical Professor in the Department of Anesthesiology at Rutgers New Jersey Medical School. Dr. Shander is a founding member, Advisory Director, and Past President of the Society for the Advancement of Patient Blood Management (SABM). In addition, he currently lectures nationally and internationally on topics related to patient blood management and his more than 200 peer reviewed publications have appeared in several prestigious peer-reviewed medical journals.

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Pierre (Peter) Tibi, MD

Medical Director, cPBM
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For more than 10 years, Dr. Tibi has been an internationally and nationally recognized leader in Patient Blood Management. He is currently Chair of Cardiothoracic Surgery at Yavapai Regional Medical Center and Managing Partner at Phoenix Cardiac Surgery in Arizona. Previously, he served as President of the Society for the Advancement of Patient Blood Management (SABM) and he is now a member of its Board of Directors.  

Dr. Tibi was also lead author with several renowned cardiac surgery professionals on the groundbreaking “Society of Thoracic Surgeons/Society of Cardiovascular Anesthesiologists/American Society of ExtraCorporeal Technology/SABM Update to the Clinical Practice Guidelines on Patient Blood Management,” published in The Annals of Thoracic Surgery.  

Dr. Tibi completed his surgical residency at Strong Memorial Hospital in Rochester, NY, received his doctor of medicine from the University of Pittsburgh School of Medicine and his BS in neuroscience from the University of Rochester.