Robert S. Cargill, PhD: Bob is the President and CEO of PDT. He holds undergraduate degrees in electrical engineering and biochemistry and a PhD in molecular biology and neuroscience. In his prior semiconductor industry experience at Maxim Integrated Products, he introduced a family of cable modem amplifiers as well as three families of ISM-band wireless transceivers, launching two successful product lines. He performed project management, product definition, circuit design and simulation, mask design, laboratory characterization, and production test.

Seeking opportunities to commercialize biotech intellectual property, he earned a certificate in Technology Entrepreneurship from a joint OHSU/University of Portland business training program. Working with Ken Ward, he co-founded PDT.

Thomas Seidl, PhD: Thomas is the Chief Science Officer. He received his BS in Chemistry from University of Hawaii in Honolulu where he was born and raised.  After moving to Oregon, Thomas joined the team at iSense corporation as the Manager of Polymer Development, where he worked with Dr. Ken Ward (one of PDT’s co-founders). Eventually, returning to academia and earning a doctorate in synthetic organic chemistry before joining the PDT team as Chief Science Officer.

Kristin Morris, MEng:  Kristin is the Lead Electrical Engineer and holds a Master’s Degree in Computer Engineering from Portland State University (2012). She is involved in nearly every level of design: from the low-level PCB and firmware, to mobile applications and data processing. She designs not only the body-worn unit for collecting and transmitting sensor data, but many testing, manufacturing and R&D support systems utilized within PDT.

Matthew Breen, BS:   Matt holds a BS degree in General Science and Chemistry from Oregon State University (2009). He is a research associate and is responsible for pre-clinical studies and bench testing of biosensors. He is also highly experienced in the field of artificial pancreas research and is co-author on many publications involving the bi-hormonal artificial pancreas (see News and Publications).

Sheila Benware, BS:   Sheila holds a BS degree in Micro and Molecular Biology, and an AAS in Bioscience Technology from Portland State University (2011). She is a research associate and is responsible for sensor fabrication and bench testing of sensors.

Brennen McCullough, BS: Brennen holds a BS degree in Biochemistry with Honors in Organic Chemistry from Portland State University (2016). Brennen was awarded by the American Chemical Society as the Most Outstanding Senior in Organic Chemistry (2016). He is a Research Chemist and Engineer responsible for microfabrication of arrays, long term testing of sensors, synthesis of polymers, redox mediators, and outer membranes.

Founding Consultants:


W. Kenneth Ward, MD  Ken is a scientist who specializes in biosensors. He is the Board Chairman and co-founder of PDT. He has been deeply involved in development of percutaneous glucose sensors (iSense, Bayer), a lactic acid sensor, and developed a subcutaneous oxygen sensor for the US Department of Defense for the purpose of detecting occult blood loss. Dr. Ward has had research grants from JDRF, NIH, CDC and DoD and, with his colleagues, developed a very effective bihormonal artificial pancreas algorithm. In his academic role, he was for many years a member of the JDRF artificial pancreas consortium, but has now left academia and is employed full time at a company he co-founded, Pacific Diabetes Technologies (PDT). In the spirit of simplifying the life of people with diabetes, PDT’s first goal is to develop a subcutaneous catheter that can be used not only as an insulin conduit but also to measure glucose continuously.

Dr. Ward has published 75 original articles, 7 book chapters, and 11 review articles, mostly on the topics of diabetes technology and biosensing. He has been awarded 22 patents and has 8 patents pending.

Peter Jacobs

Peter G. Jacobs, PhD: Assistant Professor and Bioengineer, Oregon Health and Science University (OHSU).  Expert in the bioengineering, hardware and software elements of the artificial endocrine pancreas. First author on recent article (2014) on the development and testing of a fully-automated artificial pancreas. (See News and Publications)

Jessica Castle

Jessica R. Castle, MD: Assistant Professor, Endocrinologist, and Diabetes Specialist, OHSU. Expert in amperometric glucose sensors and in the bihormonal artificial endocrine pancreas. Widely published author and sought-after speaker. (See News and Publications)