PURAP - Key Persons


George Choi - CEO, Founder

Job Titles:
  • CEO
  • Co - Founder
George is the co-founder of PRS Medical and an experienced medical device executive. Before PRS Medical he was a founder, President and CEO of Pavad Medical, a venture funded obstructive sleep apnea company and also a co-founder of Therative Inc, a venture funded aesthetics company. For ten years, George was a General Partner at MedVentures Associates and led investments in many successful healthcare companies. He started his medical device career as a corporate lawyer with Wilson, Sonsini, Goodrich and Rosati where he served as an outside general counsel for approximately 100 corporate clients.

Luiz Da Silva

Luiz has a doctorate in physics and more than 10 years of research and development experience in the medical device industry. He is a fellow of the American Physical Society and the Optical Society of America. He has over 200 publications and 52 issued patents, and his research has earned him awards from the American Physical Society, the Institute of Electrical and Electronics Engineers, R&D 100 and the U.S. Department of Energy.

Mark Davies

Job Titles:
  • Scientific Advisor
Mark is an Orthopaedic surgeon for Kaiser Permanente. He attended Stanford University, where he played rugby and majored in Biology. Prior to attending medical school, he worked at Oracle Corporation for two years. After UCLA Medical School, he completed his orthopedic residency also at UCLA, including a dedicated research year. He has published articles in a number of orthopedic journals as well as presented at national meetings. Following his time at UCLA, Dr. Davies completed a yearlong fellowship with Dr. James Andrews of Birmingham, AL. He is board certified by the American Board of Orthopaedic Surgery in addition to having a Certificate of Additional Qualification (CAQ) in Sports Medicine.

Nikhil Bhat

Job Titles:
  • Co - Founder & Technical Lead
  • Co - Founder of PRS Medical
Nikhil Bhat is the co-founder of PRS Medical and an experienced medical device technologist. He is a hands-on engineering leader with track record of innovation with 8 issued patents and more than 30 patents pending. Before founding PRS Medical, he worked at Acclarent, Inc., a Johnson & Johnson Ethicon company, developing technologies for treating pediatric otitis media. He started his medical device career at Pavad Medical, a venture funded sleep apnea company where he held several positions.

Wally Buch

Job Titles:
  • Scientific Advisor
Wally has been an angel investor in many successful startup companies, including Neoforma (NEOF). He received his MD from Hahnemann University in Philadelphia, Pennsylvania, and completed his internship and residency in General and Cardiovascular Surgery at Stanford University Hospital. He had a successful private practice in Cardiovascular and Thoracic Surgery at both Stanford University Hospital in Palo Alto and Sequoia Hospital in Redwood City for more than 25 years. He is a Diplomat of the American Board of Surgery and the American Board of Thoracic Surgery. Currently Wally is a Venture Partner at MedVentures, and a Director of 3 early stage companies.