Meet the
TransMedics Team

Experience and Innovation For the Future of Organ Preservation

The TransMedics leadership team brings a wealth of experience in the fields of organ transplantation, clinical research, medical devices, and many others to our goal of improving the lives of transplant patients and their families around the world.

Waleed Hassanein, M.D.

Waleed Hassanein, M.D.

TransMedics Founder, President and CEO

Dr. Waleed Hassanein founded TransMedics in 1998 to revolutionize organ transplant therapy for the treatment of end-stage lung, heart, and liver failure.  Dr. Hassanein’s pioneering clinical research led to the development of an entirely new living organ preservation field for transplantation.  Human organs could now be kept alive and functioning (heart beating, lung breathing, liver producing bile, etc.) outside of the human body in TransMedics’ revolutionary portable Organ Care System (OCS™) technology. Under his leadership, TransMedics has established itself as the global leader in living organ preservation and the OCS™ technology is becoming the new standard of care for solid organ transplantation. Dr. Hassanein was named as one of the top 50 Global Thinkers in Healthcare by Foreign Policy Magazine in 2015. He was the awardee of the Tribeca Disruptive Innovators Award in 2018 and was a finalist for the European Patent Office Inventor Award in 2017.  Dr. Hassanein is a frequent guest speaker in national and international meetings on the future of organ preservation for transplantation. Dr. Hassanein earned his M.D. from Georgetown University School of Medicine.  He completed two years of general surgery training at Georgetown University Medical Center.  He then completed a three-year cardiac surgery research fellowship at the West Roxbury VA Medical Center and Brigham and Women’s Hospital in Boston. His research on ex-vivo heart perfusion for transplantation was recognized by the American Association for Thoracic Surgery in 1998.

Gerardo Hernandez Omana

Gerardo Hernandez Omana

Chief Financial Officer

Mr. Hernandez is an accomplished finance leader with over 25 years of experience across the healthcare and consumer packaged goods (CPG) sectors. He most recently served as Vice President Finance, Head of Corporate Financial Planning and Analysis at Alnylam Pharmaceuticals, a biopharmaceutical company focused on RNAi therapeutics. In this role, Mr. Hernandez led a global team as the company scaled rapidly. Prior to his role at Alnylam, Mr. Hernandez spent nearly a decade at Shire, where he rose through the organization, eventually leading corporate FP&A. During his tenure, Shire was acquired by Takeda in a $62 billion transaction, after which he was instrumental in the integration effort. Mr. Hernandez began his career at Unilever where he held several finance roles of increasing responsibility before joining Shire in 2010. Mr. Hernandez holds a Bachelor of Science degree in Finance from the University of Wisconsin, La Crosse and an MBA in Strategy and Economics from Fundação Getulio Vargas, Sao Paulo, Brazil.

Tamer Khayal, M.D.

Tamer Khayal, M.D.

Chief Commercial Officer

Dr. Khayal joined TransMedics in 2001.  Over the past 18 years Dr. Tamer Khayal assumed growing responsibilities to the current role of Chief Commercial Officer in January 2018.  From 2007-2018 he was the Chief Medical Officer leading TransMedics’ global effort of building the clinical evidence, reimbursement initiatives and use model integration programs to support the PMA approvals and global commercial adoption of the Organ Care (OCS™) technology for lung, heart and liver transplantation. His patient focused approached to commercial rollout, made Dr. Khayal gain the trust and respect of the OCS™ users world-wide. Prior to joining TransMedics, Dr. Khayal served for six years as the Director of Medical Affairs for Zentiva Middle East, a pharmaceutical company, where he led clinical research, regulatory filings and clinical sales training for the company’s ME&A operations. Dr. Khayal received his MD degree from Cairo University School of Medicine and a General Certificate of Education from the University of London, England.

Anil Ranganath

Anil Ranganath

Senior Vice President, General Counsel & Corporate Secretary

Anil Ranganath joins TransMedics with over 15 years of experience in the life sciences and biotechnology tools industries. Prior to joining TransMedics, Mr. Ranganath served multiple roles of increasing scope and responsibility at Waters Corporation. Most recently, Mr. Ranganath served as Vice President, Deputy General Counsel for Waters, managing legal affairs, and serving as a trusted advisor on Waters’ strategic, tactical, and operational plans. He began his legal career as an Associate at Brown Rudnick LLP, representing life sciences and biotechnology companies on corporate and intellectual property matters. Mr. Ranganath holds a Juris Doctorate from Suffolk University Law School and a Bachelor’s degree in Computer Science from Worcester Polytechnic Institute.

Nick Corcoran

Nick Corcoran

Senior Vice President of Supply Chain & Operations

Nick Corcoran joins TransMedics with over 20 years of experience in global supply chain and commercial operations. Prior to joining TransMedics, Mr. Corcoran served multiple roles of increasing responsibility at Stryker Corporation. Most recently, Mr. Corcoran served as Vice President of Division Operations for Stryker Joint Replacement, managing the division’s entire supply chain, including internal manufacturing sites and external supply partners. Earlier in his career at Stryker, Mr. Corcoran served as Vice President of Division and Commercial Operations for the Spine Division, Senior Director of Division Operations, and Director of Global Sourcing. He also held a variety of Supply Chain and Operations roles at Waters Corporation and Intel Corporation. Mr. Corcoran holds a bachelor’s degree in Finance and Economics from South East Technological University and a Master’s of Business in Supply Chain Management from The Smurfit School of Business, University College Dublin.

Amanda Sorrento

Amanda Sorrento

Senior Vice President, Global Human Resources

Amanda Sorrento joins TransMedics with over 20 years of experience in human resources leadership across the life sciences, healthcare, and consumer sectors. Most recently, Ms. Sorrento served as Senior Vice President, Head of HR Core at Moderna Therapeutics, where she led the global human resources program strategy. In this role, she partnered closely with executive leadership to scale organizational culture and strengthen talent to support evolving business priorities. She also served as the lead HR Business Partner for R&D during a period of rapid growth and transformation.

Prior to Moderna, Ms. Sorrento held senior HR leadership roles at Beacon Health Options and Biogen, where she led HR strategy, talent management, and organizational initiatives. Earlier in her career, she spent over a decade at Nestlé USA and PepsiCo, holding roles of increasing responsibility across different human resources disciplines in complex, matrixed environments.

Ms. Sorrento holds a Master of Human Resources and Industrial Relations (MHRIR) and a Bachelor of Science degree from the University of Illinois Urbana-Champaign.

Christy Foreman

Christy Foreman

Chief Regulatory Officer

Christy Foreman has over 30 years of experience in Medical Device Regulatory Affairs, including 22 years at the Food and Drug Administration where she worked in both premarket and quality/compliance areas holding a variety of positions ranging from Reviewer to Office Director of the Office of Device Evaluation.  After leaving the FDA, Ms. Foreman began consulting and provided strategic guidance and tactical support for large and small medical device companies.  Ms. Foreman served as the SVP of Quality and Regulatory Affairs at Drive Devilbiss Healthcare before joing TransMedics as the Chief Regulatory Officer.  Ms. Foreman earned a Bachelor’s degree and a Master’s degree in Biomedical Engineering from The Catholic University of America.

Pam Baxter

Pam Baxter

Chief Information Officer

Pam Baxter joined TransMedics in 2023 with over 20 years of experience in Information Technology and Digital Transformation. Pam’s most recent role was the Chief Information Officer at Cynosure. There she spearheaded a global digital transformation including a cloud-first strategy, a data and IoT strategy, and built a high-performing Information Services organization following the carve-out from Hologic. Prior to Cynosure, Pam led a Retail and Consumer Industries Global Practice at Amazon Web Services. Before being selected by Amazon Web Services, Pam was the Chief Information Officer at Talbots, where she led a comprehensive Omni-Channel Digital Strategy in support of Talbots’ growth and innovation initiatives. Earlier in her career, Pam served as Chief Information Officer at CompuCom Systems (Managed Services, Technology, and Consulting) where she drove the strategy and operations for all services delivered. Other Senior IT roles include as Vice President, Global Service Delivery Systems for Getronics, and Vice President Software Engineering at Starwood Hotels & Resorts Worldwide. Pam holds a Bachelor of Arts degree in Business Administration with a major in Finance, from the University of Massachusetts at Amherst.

Ioana Ghiu

Ioana Ghiu

Vice President, Clincial Affairs

Dr. Ioana Ghiu is a strategic clinical and medical affairs leader with more than 15 years of experience advancing breakthrough medical technologies from concept to global commercialization. Before joining TransMedics in 2025, she spent over 13 years at Abiomed (now part of Johnson & Johnson), where she led global clinical trials and registries supporting the company’s circulatory support platform. She later served as Vice President of Clinical Affairs for a structural heart startup, where she built the global clinical program and a high-performing team from the ground up. Throughout her career, Dr. Ghiu has led pivotal clinical trials, secured multiple FDA PMA and HDE approvals, and driven evidence generation strategies that have defined new standards of care. She is recognized for her deep understanding of how robust clinical data translates into patient impact, product innovation, and business growth and her strong academic and KOL partnerships. Dr. Ghiu earned her MD from the University of Medicine and Pharmacy Carol Davila in Bucharest, an MS in Exercise Physiology from the University of Maryland, and completed a postdoctoral fellowship in Pediatric Cardiology at the NYU School of Medicine.

Susanne Montag

Susanne Montag

Vice President DACH & Commercial Lead Europe

Susanne Montag has over 20 years’ experience in Medical Device sales and more than 10 years’ experience in leadership of sales, market access and marketing units in the medical device industry. Prior to joining TransMedics, Mrs. Montag served multiple roles of increasing responsibility at LivaNova. In her career Mrs. Montag hold the position in LivaNova as VicePresident Central and Eastern Europe for the business units of Heart Valve, Cardiopulmonary and Neuromodulation. Mrs. Montag holds a BA degree of Economics and a diploma for leadership of the London business school.

Xiang Zhuang

Xiang Zhuang

Senior Director, Quality Assurance

Xiang Zhuang joined TransMedics with over 15 years of experience leading quality teams in medical device, life science and bioproduction industry. Before joining TransMedics, Xiang served multiple roles of increasing scope and responsibility at Thermo Fisher Scientific Inc. Most recently as Head of Quality at their Bedford site, managing the quality operation for clinical diagnostic and bioprocessing purification business. Prior to Thermo Fisher Scientific Inc, Xiang held a variety of Quality Engineering, Quality Management System and Quality Assurance roles at Life Technologies Inc and GIBCO Scientific.  Xiang holds a Bachelor degree in Biochemistry from Wuhan University and Master degree in Molecular Biology from the University of Buffalo, SUNY.  

Stephen Gordon, MBA

Stephen Gordon, MBA

Senior Advisor

Stephen Gordon joined TransMedics in March of 2015. He has over 20 years of experience leading financial organizations within high technology and medical device companies.  During this time his areas of focus have been strategic planning, M&A integration, financial planning and analysis, and improvement in the presentation of quantitative information. Prior to joining TransMedics, Mr. Gordon was the Vice President, Financial Planning & Analysis at Analogic Corporation, a medical device and security technology company. Before joining Analogic, Mr. Gordon held various financial leadership positions at Hologic, Cytyc, Maxtor and Hewlett-Packard. Mr. Gordon earned a Bachelor’s degree in Finance and Accounting from The Wharton School at The University of Pennsylvania, and an MBA from Boston University.

Farhan Zafar, M.D.

Farhan Zafar, M.D.

Chief Cardiothoracic Programs

Dr. Zafar joined TransMedics in 2022 and is currently leading the heart and lung divisions as the Chief of Cardiothoracic Programs. Dr Zafar comes with a 10-year clinical and research experience in the field of cardiothoracic transplantation, he was an Associate Professor of Surgery at the University of Cincinnati and the director of Cardiothoracic Procurement and Cardiothoracic Research Labs at the Cincinnati Children’s Hospital Medical Center. He was an NIH funded investigator and held various leadership positions at academic societies. He received his MD degree from Dow Medical College, Karachi and his surgical and research trainings from Baylor College of Medicine, Houston and Cincinnati Children’s Hospital, Cincinnati.

Malcolm Mac Conmara, MB BCh FACS

Malcolm Mac Conmara, MB BCh FACS

Vice President, Abdominal Transplant Medical Affairs
Magdy Attia

Magdy Attia

Chief Abdominal Programs

My name is Dr Magdy Attia. I am the Chief of the OCS Liver Transplant Program at TransMedics and a liver transplant surgeon with over 28 years of experience in the field. Before joining TransMedics, I spent 25 years working in the United Kingdom, where I served as the Head of the Department of Organ Transplantation at Leeds Teaching Hospitals NHS Trust from 2010 to 2021. My passion lies in organ preservation and normothermic machine perfusion, an area in which I earned a research doctorate from the University of Leeds in 2000. Over the past two decades, I’ve led multiple clinical trials as Principal and Chief Investigator, contributed to the development of national and international guidelines, and published extensively in the field of Transplantation and liver surgery. Throughout my career, I’ve been involved in more than 9,000 liver transplants. My focus continues to be on maximizing the donor pool and improving the utilization of livers from deceased donors through innovative technologies and clinical approaches. 

Miriam Provost, Ph.D.

Miriam Provost, Ph.D.

Vice President of Global Regulatory Affairs

Miriam Provost has over 24 years of experience in Medical Device Regulatory Affairs, including 13 years at the Food and Drug Administration. Prior to joining TransMedics, Dr. Provost was an internationally recognized expert in Regulatory Affairs and provided strategic guidance and tactical support for large and small medical device companies as medical device regulatory consultant.  Her expertise stems from 13 years as a reviewer and manager at the Food and Drug Administration where she served in a variety of roles across the Agency, gaining broad knowledge and familiarity with all matters related to FDA policies, procedures and decision-making. Dr. Provost earned a Bachelor’s degree in Chemical Engineering from the University of Dayton and M.S. and Ph.D. degrees in Chemical Engineering from the University of Pennsylvania.

TransMedics Board of Directors and Observers

  • James R. Tobin
    Chairman of TransMedics Board
  • Edward M. Basile
  • Thomas J. Gunderson
  • Merilee Raines
  • Waleed Hassanein, MD
    President and Chief Executive Officer
  • Edwin M. Kania, Jr.
  • David Weill, M.D.
  • Stephanie Lovell
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