Management Team


Lubna Ahmad

Founder and CEO

Lubna founded Invoy Technologies to develop affordable breath analyzers for health applications – initially targeting the U.S. obesity epidemic. She has led Invoy’s clinical research and multi-site validation studies, as well as the Company’s product development efforts and robust intellectual property portfolio, and its manufacturing processes and quality certifications for commercialization. Lubna also led the recent launch of Invoy’s beta user roll-out. She has raised over $10 million from angel and strategic investors and assembled a strong team of advisors and management to execute on Invoy’s vision to solve our nation’s weight loss problem and impact lives with actionable data.

Lubna holds a Ph.D. in Biomedical Engineering from Arizona State University and was a Goldwater scholar and National Science Foundation fellow.


Zach Smith

Vice President - Design

Zach is responsible for the industrial design, mechanical attributes, usability, and ergonomics of Invoy’s Voyager device and next generation technology. He has expertise in many related areas such as 3-D modeling, CAD drawing, prototyping, value engineering, graphic design and packaging. An early member of the Invoy team, Zach also works closely with third party manufacturers.

Zach received his BS degree in Industrial Design from Arizona State University, where he later served as an Adjunct Instructor.

Advisory Board


Sep Kamvar

Sep Kamvar is the director of the Social Computing group at the MIT Media Lab. From 2003 to 2007, Kamvar was the head of personalization at Google. Prior to Google, he was founder and CEO of Kaltix, a personalized search company that was acquired by Google in 2003. He has been a consulting professor at the Institute for Computational and Mathematical Engineering at Stanford University.

Kamvar is the author of three books and more than 40 technical publications and patents. He is on the technical advisory boards of several companies, and his artwork has been exhibited in museums worldwide, including The Museum of Modern Art in New York, the Victoria and Albert Museum in London, and the National Museum of Contemporary Art in Athens.

Kamvar received his PhD in scientific computing and computational mathematics from Stanford University, and an AB in chemistry from Princeton University.




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.




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.