Meet Our Leadership Team.

Professional headshot of Deborah Di Sanzo

Deborah Di Sanzo


Deborah Di Sanzo is president of Best Buy Health for Best Buy Co. Inc. In this role, she is responsible for the company's health strategy, connecting people with technology to care for their health at home.

Deborah oversees Best Buy Health's three focal areas of wellness at home, aging at home, and care at home. She also leads the incubation, strategy and corporate development teams focused on scaling health initiatives at Best Buy.

Deborah is an innovative, strategic leader with more than 30 years of experience at the intersection of health care and technology. She is a recognized thought leader in artificial intelligence and big data, has deep experience in running industry-recognized innovative health care businesses, and has a demonstrated ability to drive growth—both organically and through acquisitions.

Prior to Best Buy, Deborah led the IBM Watson Health team, launching artificial intelligence offerings designed to help doctors, researchers, health care providers, pharmacists and insurers better serve patients around the world. Deborah was also CEO of Philips Healthcare, where she and her team brought consumer-grade, automatic defibrillators to the market, making them first available in public places then, ultimately, in the homes of Americans.

Professional headshot of Diana Gelston

Diana Gelston

Chief Commercial Officer

Diana Gelston is the chief commercial officer of Best Buy Health for Best Buy Co. Inc. In her role, she is responsible for building and strengthening the company's commercial relationships that aim to enable care at home for everyone.

Diana leads a large, diverse team in creating and executing high-impact, go-to-market strategies that support the company's mission to enrich and save lives through technology and meaningful connections. At Best Buy Health, she is focused on developing integrated technology services and offerings that support consumers wherever they are on their health journey and improve the care-at-home experience.

Previously, Diana has successfully launched and developed more than a dozen sales and marketing teams in tech, medical devices, digital health, and healthcare information systems at Amazon Business Healthcare, Fresenius Medical Care, Philips Healthcare, and other innovative start-ups.

Diana earned a bachelor's degree from the University of Southern California and a certificate in Leadership Development and Business Administration from the University of Pennsylvania's Wharton Business School.

Professional headshot of Chemu Lang'at

Chemu Lang'at

Chief Operating Officer

Chemu Lang'at is the chief operating officer of Best Buy Health for Best Buy Co. Inc., leading the Operations and Quality & Regulatory functions. In this role, she is responsible for the Caring Centers, expanding the reach of our supply chain and operational ecosystem, driving a culture of quality and ensuring compliance of our offerings and medical devices. She also leads the health equity work for Best Buy Health.

Prior to joining Best Buy, Chemu was the Regional Head for Africa under Medtronic Labs, developing and scaling community-based, technology-enabled solutions for chronic disease management across. Chemu previously worked as a Principal Biomedical Engineer for Medtronic, as well as a Systems Safety and Reliability Engineer at NASA's Johnson Space Center.

Chemu received her bachelor's degree in Mechanical Engineering and Assistive Technology from Hampshire College, a master's degree in Biomedical Engineering from New Jersey Institute of Technology, and an executive MBA from Massachusetts Institute of Technology. She serves on Best Buy Foundation's and Splash International's boards and is a strategic advisor for TIP Global Health.

Professional headshot of Mark Kaufman

Mark Kaufman

Chief Technology Officer

Mark Kaufman is chief technology officer of Best Buy Health for Best Buy Co. Inc. In his role he oversees the company's hardware and software engineering teams. Mark has extensive engineering leadership experience with a focus on large scalable systems and mission critical data.

Previously, Mark was the chief technology officer for Current Health, where he served as a critical driver and leader of Current Health's hardware and software systems, supporting rapid company growth amid complex industry requirements and an ever-changing technical landscape.

His experience includes leadership positions at startups and large companies alike, leading turnarounds for struggling businesses and delivering continued growth at successful companies. Before joining Current Health, Mark led teams at Amazon AWS, NuoDB, Hewlett Packard Enterprise and more.

Professional headshot of Jenny Ramseth

Jenny Ramseth

Chief Product Officer

Jenny Ramseth is the chief product officer of Best Buy Health for Best Buy Co. Inc., leading the product management, research, design and marketing teams. She is responsible for delivering valuable products and experiences that enable care in the home and help people live better, healthier, more independent lives.

Jenny has over fifteen years of health technology experience leading product, strategy, and innovation teams. She is passionate about deeply understanding what people need and building collaborative teams to co-create solutions that make a meaningful difference in people's lives.

Prior to joining Best Buy Health, Jenny was at Medtronic where she focused on cardiovascular disease management, diagnostics and monitoring. Jenny has a bachelors degree in biomedical engineering from the University of Wisconsin and a master's in business administration from the University of Minnesota.

Professional headshot of Josh Will

Josh Will

Chief Revenue Officer

Josh Will is the chief revenue officer, healthy aging of Best Buy Health for Best Buy Co. Inc., leading alignment between all teams that affect revenue generation across our Lively brand and Commercial PERS businesses.

With more than 24 years of omni-channel retail, general manager, and “intrapreneurial” experiences, Josh has worked in and led some of the most complex product categories. He is recognized as a leader in the industry, driving Best Buy and its vendors to improve the ways in which we serve our customers and solve their needs.

Prior to his role, Josh led numerous business units, categories, and large-scale enterprise capabilities for Best Buy, including the company's entrance into Home Theater, Mobile Phones, Smart Home, and more recently, Digital Health and Fitness.

Josh holds a business administration and leadership degree from the University of Mary. He serves as a board member for the Consumer Technology Association's Wireless Division, and as an advisory board member for