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Meet the experts behind Google Health's healthcare technology advancements

Our team of experts is committed to transforming the future of health through scientific excellence, human-centered technologies, and trusted infrastructure. Our team roll call includes engineers, clinicians, designers, researchers and everything in between, all committed to helping everyone live more life everyday. And at our core is a dedication to diversity, equity, and inclusion—from how we build our products to how we build our workforce.

Backed by clinical expertise

All Google Health initiatives — from new products to research — are designed and developed in close collaboration with clinicians who are experts in their fields. Our team’s experience and expertise span decades of clinical practice, public health, health economics research, and AI and machine learning in medicine — ensuring that Google Health initiatives adhere to the highest clinical standards.

Photo of Dr. Karen DeSalvo

Dr. Karen DeSalvo

Chief Health Officer

Dr. Karen DeSalvo is a physician executive working at the intersection of medicine, public health, and information technology whose career has focused on improving health and eliminating disparities. She leads a team of health professionals at Google who provide guidance for the development of inclusive research, products and services. She has been part of the Google COVID response team. Before joining Google, Dr. DeSalvo was National Coordinator for Health Information Technology and Assistant Secretary for Health (Acting) in the Obama Administration. During her time at the U.S. Department of Health and Human Services, Dr. DeSalvo focused on creating a more consumer-oriented, transparent and value-based health system. Dr. DeSalvo served as the New Orleans Health Commissioner following Hurricane Katrina. She was previously Vice Dean for Community Affairs and Health Policy at the Tulane School of Medicine where she was a practicing internal medicine physician, educator, researcher and leader. She serves on the Council of the National Academy of Medicine.

Dr. Michael Howell

Dr. Michael Howell

Chief Clinical Officer and Deputy Chief Health Officer

Dr. Michael Howell’s career focuses on improving the quality, safety, and experience of care, including how technology can help improve health. A nationally recognized expert on healthcare delivery science, he has served on advisory panels for the Centers for Disease Control, Medicare, and the National Academy of Medicine. His writings, cited by other researchers more than 10,000 times, have had an impact on the field and are incorporated in several national guidelines. A pulmonary and critical care physician, he also spent many years caring for patients at Harvard and at the University of Chicago, where he served as Chief Quality Officer.

Ashley Sumner

Ashley Sumner

Lead Nurse

Ashley Sumner is a Burns and Plastic Surgery Nurse Specialist who has held several senior nurse roles in the NHS and the UK Private Healthcare sector. Throughout her career, Ms. Sumner has led the delivery of large-scale quality improvement and clinical IT deployment projects across hospitals and healthcare groups. In 2014, she joined a UK health technology organisation as Nurse Director for mobile clinical solutions and completed an MSc in Quality and Patient Safety at Imperial College, London, in 2015. Since joining Alphabet in 2017, Ashley has worked across functions supporting product development, deployment and partner engagement, leading on quality, regulatory affairs and clinical safety.

Dr. John Hernandez

Dr. John Hernandez

Head of Health Economics, Outcomes Research and Clinical Research Operations

Dr. John Hernandez brings 30 years of clinical research, consulting, and commercial strategy experience to Google Health. Prior to joining Alphabet, he was Vice President of Global Health Economics and Outcomes Research at Abbott Laboratories, and Vice President of Clinical Research and Health Economics at Boston Scientific Corporation. At Google Health, Dr. Hernandez focuses on how to leverage data from connected biosensors, smartphones, electronic health records, and clinical studies to create a more patient-centric healthcare system.

Built on a foundation of safety, efficacy, and trust

Our work in health is held to the highest standards of Quality Assurance, Regulatory Affairs, Clinical Safety, Bioethics, Privacy and Operations. Our team of experts use best-in-class systems and practices to comply with regulatory requirements and data protection laws, driving innovation and simplifying technology and business processes so we can deliver trusted, high quality products that can improve health and well-being.

Photo of Linda Peters

Linda Peters

Vice President, Quality, Regulatory & Safety, Health

Linda Peters brings over 25 years of regulatory affairs, quality, compliance and safety experience in healthcare. She comes to Google Health from the global medical technology provider Becton Dickinson, where she led the regulatory affairs and government affairs functions. Until recently, she also served on the board of the Medical Device Innovation Consortium, the first-ever public-private partnership focused on advancing medical device regulatory science. In this capacity, she teamed up with healthcare companies and representatives of the FDA, NIH, CMS, nonprofits and patient organizations to further patient-centricity in the development and review of new medical technologies.

Photo of Dr. Lisa Lehmann

Dr. Lisa Lehmann


Dr. Lisa Lehmann is eager to have a transformative impact on healthcare as part of the global reach of the Google Health team. Lisa was the Chief Medical Officer for the VA New England Healthcare System, where she was responsible for clinical operations for eight healthcare systems, developed a systematic approach to responding to veterans' social needs, and managed the regional response to COVID-19. Prior to this role, she served as Executive Director of the National Center for Ethics in Health Care for the Veterans Health Administration.

Photo of Mustapha Haruna

Mustapha Haruna

Information Governance Manager

Mustapha Haruna has worked in Information Governance for over 11 years in NHS Acute Trust, Mental Health Trusts, NHS Commissioners and Department of Health and Social Care UK. During these roles, he has led IG advisory for procuring IT systems, deployment of technological solutions to aid healthcare, and run patient engagement forums on privacy and transparency. Mustapha has also provided lectures on data protection and privacy to the Royal College of Psychiatrists, Royal College of Nursing, and Public Health England.

Photo of Dr. Ivor Braden Horn

Dr. Ivor Braden Horn

Director of Health Equity and Product Inclusion

Dr. Ivor Horn, MD, MPH, FAAP, is a nationally recognized leader in health equity, social determinants of health and healthcare innovation. Prior to her role at Google, Dr. Horn served as Chief Medical Officer at Accolade. Before Accolade, she served as Medical Director of the Center for Diversity and Health Equity at Seattle Children’s Hospital, and Professor of Pediatrics at the University of Washington School of Medicine. Dr. Horn is also a nationally recognized researcher with a history of funding from government and non-profit organizations to research the use of technology in under-represented populations. She has authored several peer-reviewed journal publications on health communication and health equity.

Innovation through research, experimentation and discovery

Transformative healthcare technologies depend on groundbreaking translational research. At Google Health we’ve embraced a model of embedded research and development where scientists work in tight integration with product and engineering teams. Our inherently collaborative and multidisciplinary approach lends itself naturally to researchers of diverse backgrounds and expertise, able to cross the boundaries of clinical science, artificial intelligence, informatics, and user centered design.

Photo of Dr. Maria Nattestad

Dr. Maria Nattestad

Software Engineer

Dr. Maria Nattestad is a software engineer on the genomics team in Google Health, where she works on DeepVariant, a deep learning based variant caller for genomic sequencing data. She focuses on building tools to make high-quality genetic information accessible to scientists, clinicians, and patients to help them make better health decisions. Prior to joining Google, she completed a PhD at Cold Spring Harbor Laboratory in New York, working on algorithms and visualization tools for using long-range genomic data in cancer research. After her PhD, she built a genomic visualization software business, along with a YouTube channel called OMGenomics where she gives people around the world advice on pursuing bioinformatics.

Photo of Dr. Yuan Liu

Dr. Yuan Liu

Software Engineer

Dr. Yuan Liu is a software engineer on the dermatology team in Google Health. She currently leads various dermatology related research and development efforts, with a focus on building AI assistant tools to improve the world’s access to accurate information and care for everyone. She also worked on applying computer vision techniques to large-scale user generated content in Google Maps. Prior to joining Google, she obtained her PhD in medical image processing at Vanderbilt University, where she conducted intelligent analysis of radiology images (CT, MRI) to advance image-guided neurosurgical procedures. She currently serves as a co-chair for the upcoming ISIC Skin Image Analysis workshop at CVPR, and guest editor for upcoming special issues on skin image analysis.

Photo of Dr. Eric Teasley

Dr. Eric Teasley

Technical Program Manager

Dr. Eric Teasley is a technical program manager who plays roles on the mobile vitals and health equity teams at Google Health. Eric developed the mobile vitals team’s first platform for collecting synchronized video and ground truth vital sign data and conducted the pilot study behind the team’s technologies for measuring heart rate and breathing rate via smartphone camera as features of the Google Fit app. His experience in ensuring that these technologies were developed with diversity in mind led to a role in developing processes for ensuring equity in research across Google Health. Prior to Google, Eric completed an MD and an MS in bioengineering at Stanford, where he used microfluidics to enable novel methods of growth factor delivery for tissue engineering applications and created tools for capturing and observing individual cells. He additionally holds a BS in chemical engineering from Stanford.

Photo of Dr. Sunny Jansen

Dr. Sunny Jansen

Technical Program Manager

Dr. Jansen's work as a Technical Program Manager focuses on oncology, medical imaging and machine learning, and translating Google’s foundational research into real-world patient impact. Before joining Google, she was at Verily Life Sciences where she led regulatory strategy and clinical development of machine-learning technology spanning diverse disease indications. She also worked at the Food and Drug Administration (FDA) as a lead review scientist of breast cancer detection and diagnosis technologies, and at the National Cancer Institute doing research in breast cancer genetics. Dr. Jansen received her PhD in Medical Physics from the University of Chicago.

Photo of Dr. Chris Kelly

Dr. Chris Kelly

Clinician Scientist

Dr. Christopher Kelly is a clinician scientist working in Google Health’s artificial intelligence imaging and diagnostics team. He focuses on the safe translation of Google’s groundbreaking artificial intelligence research into real clinical impact. Prior to joining Google, he completed a PhD in medical imaging at King’s College London. As a clinician, he created an award-winning smartphone app called NeoMate, used worldwide to support doctors and nurses looking after sick newborn infants. He continues to practise as a paediatrician on the neonatal intensive care unit at St Thomas’ Hospital, London. Alongside medicine, Chris previously founded and sold two internet companies and is an active angel investor in technology startups.

Careers at Google Health

The Google Health team combines technological expertise with clinical best practices and patient-first principles — offering a great opportunity for anyone interested in and passionate about healthcare. Want to join our team?