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. She is responsible for the company’s health technology business.

Best Buy Health enables care at home for everyone across the continuum of care based on Best Buy’s core competencies. Together, our integrated technology, personalized caring centers and technical services, logistics, supply chain, and omnichannel experiences enable consumers to develop meaningful connections with their caregivers, insurers, and clinicians. 

Best Buy Health includes our Lively brand of connected health and personal emergency response services for the aging population, which Best Buy acquired in 2018, as well as Current Health, a leading care at home technology platform which Best Buy acquired in 2021. 

Deborah is an innovative leader with more than 30 years of experience at the intersection of health care and technology. Prior to Best Buy, Deborah was the General Manager of IBM Watson Health, and prior to IBM, she was the CEO of Philips Healthcare. She teaches “AI in Health” and “Managing Information in Health Care” at the Harvard T.H. Chan School of Public Health. Deborah holds a bachelor’s degree from Merrimack College and an MBA from Babson College. She is a Harvard University Advanced Leadership Initiative Fellow and serves on the board of AstraZeneca.

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