Management Team


Lubna Ahmad

Founder and CEO

Lubna founded Invoy to develop affordable breath analyzers for health and medical applications. Since founding Invoy, she has led Invoy’s product development efforts, developed a robust intellectual property portfolio, and transferred the current product design to manufacturing. In parallel, she designed clinical validation studies and recruited key thought leaders to collaborate to address key clinical questions. She has been responsible for raising Invoy’s angel and VC financing and recruiting experienced medical device executives to Invoy’s board and management team. Lubna holds a Ph.D. in biomedical engineering and was a Goldwater scholar and National Science Foundation fellow.


Salman Ahmad

VP of Products

Salman is responsible for the hardware and software architecture that underlies the Voyager device, App, Web services and next generation technology. Additionally, he leads the research and development on the algorithms that underly Invoy's sensor technology. Salman's background is in computer science and software engineering. He completed his MS at Stanford and PhD at MIT and has consulted for various prominent technology companies, including Apple and Microsoft.


Zach Smith

VP of Design

Zach is responsible for the mechanical attributes of the Voyager device and next generation technology. Usability and ergonomics heavily influence Zach’s work. Zach is also integrally involved in creating and maintaining relationships with key contract manufacturers to drive down costs. As an early member of Invoy, Zach has leveraged his past background in industrial design to create graphical assets, perform usability studies, and design tradeshow and other marketing collateral.

Advisory Board


Thomas Berryman

Thomas has extensive experience in bringing venture funded medical technology companies from initial startup through product commercialization, revenue growth and exit. Most recently, he served as President and CEO of WaveTec Vision Systems from its initial venture funding in 2005 until September 2010. WaveTec has developed ORA, the first of its kind intraoperative wavefront aberrometer that is enabling ophthalmologists to improve the outcomes of their refractive cataract surgery procedures. Prior to joining WaveTec, he was President and CEO of Genyx Medical, Inc., which he founded in 1997 and sold to to C.R. Bard in 2005. Prior to founding Genyx, Thomas was with Micro Therapeutics, Inc. from 1994 though 1997 as its CFO. Prior to MTI, Thomas served since 1985 as CFO in several other early stage device companies in Orange County, including Advanced Surgical Intervention and VLI Corporation. He received a BS degree from Cal Poly, Pomona and a MBA with Honors from the University of California, Irvine.




Brian Stern

Brian is a healthcare operating executive who works with physicians and other healthcare professionals to deliver outstanding clinical outcomes and great patient experiences. Brian is currently an Operations Executive at DaVita Healthcare Partners. Prior to DaVita, Brian was SVP Operations at Smile Brands where he was responsible for the clinical and financial performance of the company's 380 dental practices. Prior to joining Smile Brands, Brian was the Founder & CEO of Final Inches, a chain of cosmetic surgery centers.

Brian earned his BA with honors from the University of Pennsylvania and his MBA from Harvard Business School. He serves on the boards of the Heart Institute at Children's Hospital Los Angeles, the Jewish Community Center of Orange County and Harbor Day School in Newport Beach.




Greg Garcia

Greg is an experienced attorney trained in the legal and business aspects of the biosciences and has substantial litigation experience. He has been a commissioner for the Arizona Biomedical Research Commission, which supports translational medical research and the State of Arizona's investment in the biosciences. He is the current Chair of the Government Affairs Committee for the Arizona Bioindustry Association.

Clinical Advisors


Eric Westman MD

Dr. Westman is an associate professor of medicine, the director of the Duke Lifestyle Medicine Clinic, and medical director of the Duke Center for Smoking Cessation. Dr. Westman is board certified in internal medicine and obesity medicine, and has a masters degree in clinical research. His clinical research and clinical care relate to lifestyle treatments for obesity, diabetes, and tobacco dependence, and he has over 90 peer-reviewed publications. Dr. Westman is currently the president of the American Society of Bariatric Physicians, and a fellow of the Obesity Society and the Society of General Internal Medicine. Dr. Westman is co-editor of the medical textbook, Obesity: Evaluation and Treatment Essentials, and co-author of The New Atkins for a New You, and Cholesterol Clarity.




James Gavin MD, PHD

Dr. Gavin has been working with Invoy for the past three years to develop its clinical acceptance program. Dr. Gavin is the past president of the American Diabetes Association (ADA) and was voted Clinician of the Year by ADA in Diabetes in 1991. He is a member of the Board of Baxter International, Amylin Pharmaceuticals, and Nuvelo Pharmaceuticals. Dr. Gavin is immediate past chairman of the National Diabetes Education Program and a past member of the Advisory Council to the NIDDK. He is also chairman of the Data Safety Monitoring Board for the VA Cooperative Diabetes Study. Dr. Gavin is a Clinical Professor of Medicine at Emory University and was the president of the Morehouse School of Medicine. He holds a Ph.D. in biochemistry and an MD with specialization in endocrinology.