Board of Directors


Dr. Alistair Phillips is the former Chief of Congenital Heart Surgery at the Cedars Sinai Heart Institute in Los Angeles, California, and Co-Director of the Guerin Family Congenital Heart Program. He is a seasoned congenital heart surgeon, with over twenty years of experience, operating on both children and adults with congenital heart disease. Dr. Phillips is an asset to OpHeart for both his surgical expertise and experience as an inventor and innovator in pediatric cardiology, and we are thrilled to have the benefit of his wealth of knowledge.


Dr. Jennifer Arnold is a Board-certified neonatologist and Medical Director of the Simulation Center at Johns Hopkins All Children’s Hospital.  She has done extensive research on the effects of a simulation-based healthcare training, and is passionate about the applications of 3D-printing in advancing pediatric simulation in critical care situations and improving outcomes.

Further, Dr. Arnold and her family are featured in TLC’s The Little Couple, which documents their lives as little people.  She has a rare type of dwarfism called Spondyloepiphyseal Dysplasia Type Strudwick, which has required that she undergo dozens of surgeries throughout the course of her life.  This has afforded Dr. Arnold a rare opportunity to see the healthcare system as both an inveterate patient and engaged clinician, and she brings a rare and much-needed perspective to the conversation regarding the delivery of healthcare.

In addition, Dr. Arnold is a New York Times bestselling author and has co-written Life is Short and Think Big with her husband, Bill Klein.


Andy Christensen is a pioneer in the 3D printing in medicine and the founder of Medical Modeling Inc., and is uniquely positioned to speak to the benefits of utilizing 3D-printing across specialties. After selling his company to 3D Systems in 2013, Mr. Christensen has become a powerful proponent for the applications of 3D-printing in medicine. He has served as the interim CEO for the World Craniofacial Foundation and as a member of the Board of Directors of e-NABLE, a foundation that is dedicated to delivering quality, low-cost prostheses utilizing 3D-printing.

In addition, Mr. Christensen serves as the Associate Editor of 3D Printing in Medicine Journal, published by Springer-Verlag and is a frequent speaker at medical conferences such as the Radiology Society of North America annual meeting and technology conferences, like SME’s RAPID conference.

We are so honored, lucky and excited to have Mr. Christensen on our Board.


DavidDr. David Frakes is currently a Director at Google in Advanced Technology and Projects (ATAP).  In 2008, he joined the faculty of Arizona State University, where he is a jointly appointed associate professor in the School of Biological and Health Systems Engineering and the School of Electrical, Computer, and Energy Engineering.  Dr. Frakes received the 2009 ASU Centennial Professor of the Year Award, the 2012 National Science Foundation CAREER Award, the 2014 Arizona Innovator of the Year Award, and the 2014 World Technology Network Award in Health and Medicine.  In addition to a Ph.D. in bioengineering, he holds M.S. degrees in electrical engineering and mechanical engineering.  Dr. Frakes’ areas of expertise include image and video processing, medical imaging, fluid dynamics, and machine vision.


YoavDr. Yoav Dori is the Co-Director of the Lymphatic Program and a pediatric interventional cardiologist at Children’s Hospital of Philadelphia.  Further, Dr. Dori holds a PhD in Chemical Engineering. He is also one of the Principal Investigators of the 3D Print Study.







John Gilkes is a seasoned forensic accountant and retired principal from Deloitte, and has more than twenty years experience in asset tracing and recovery and in the management and conduct of financial/fraud investigations involving wire transfer fraud, bribery/corruption, and extortion.





Etnyre 2Robert Etnyre practices law with the firm of Royston Rayzor in Houston. His practice areas include admiralty and maritime law, business and commercial litigation, and insurance coverage and litigation. In addition to a busy legal practice, Mr. Etnyre is involved in pro bono legal services, representing hundreds of asylum seekers without cost in federal courts, appellate courts, and the Board of Immigration Appeals.  He was recognized by the State Bar of Texas for his outstanding pro bono legal services to the poor as the 2002 recipient of the prestigious Frank J. Scurlock Award.


Michael R

Michael Ruhlman  is a New York Times bestselling author , home cook and entrepreneur. He has written 21 books of mostly nonfiction, including Walk on Water: The Miracle of  Saving Children’s Lives.

Mr. Ruhlman has acted as a judge on the reality shows  Cooking Under Fire and on The Next Iron Chef. He has also made several appearances on Anthony Bourdain‘s A Cook’s Tour and  No Reservations.

Despite such renown, Mr. Ruhlman says that his greatest professional accomplishment of which he is most proud is having profiled the “soul-crushing, diamond-making stress”  of pediatric  cardiac surgery.



Our Board of Directors comprises accomplished individuals who represent the wide array of interests in pediatric cardiac care.  We hand-select the innovators, disrupters and optimists, all dedicated to the improved care of CCHD families.