Dr. Karla Callahan has 20 years of experience in the high technology, semiconductor, medical device and computer industries.  Dr. Callahan is a high-energy executive with a proven track record of product development, rapid growth and creative problem solving. She is an inspirational leader of technology teams, both domestic and international, from new product conception, through development, manufacturing and commercialization to achieve fast growth and profitability.

Dr. Callahan brings strength in all aspects of technology business management including technical and engineering development, financial strategy, team project planning, manufacturing & operations decisions, IP protection, and customer/vendor relationship management.  A creative and articulate strategist, she is skilled in making complex challenges clear, compelling, and achievable.

Dr. Callahan is the founder, President & CEO of Vizyontech Imaging, Inc. bringing 3D 21st-century technology to the medical ultrasound industry. She has held technical and business executive positions in successful start-up companies as well as in large corporations, including Texas Instruments, Cypress Semiconductor, and American Microsystems, with profit & loss responsibilities up to $100M and 2,000+ employees. Dr. Callahan was the CEO of United Silicon Structures, a semi-custom integrated circuit (ASIC) start-up company that won chip design placement in Boeing’s 767 and 777 electronic controls. With this win and others, she grew the company from a loss position to $10M revenue in 2.5 years and sold to a European company.  Organizations that have reported to her resided in Korea, Singapore, Philippines, France, and the United States.

Dr. Callahan holds her Ph.D. (2004), Technology Mergers & Acquisitions,  an MS in Engineering Management from the University of Missouri and a BS Chemistry from the SD School of Mines and Technology. Contact her at 408-351-3583 or This e-mail address is being protected from spam bots, you need JavaScript enabled to view it .