Our Team

Sami Inkinen, MSc, MBA
CEO, Founder
Prior: Trulia Co-Founder & President / McKinsey & Company / Nokia / Microsoft / Stanford MBA, MSc Physics
Dr. Stephen Phinney, MD, PhD
Chief Medical Officer, Founder
Stanford MD / PhD Nutritional Biochemistry MIT / Fellowship Harvard / Prof of Medicine emeritus, UC Davis
Dr. Jeff Volek, PhD, RD
Chief Science Officer, Founder
Penn State PhD / Professor of Kinesiology at The Ohio State University / Published 300+ peer-reviewed papers
David Hatch, MA
Head of User Experience
Prior: Trulia VP of UX / Adobe / 20 yrs designing user experiences for digital products and leading teams
Anand Parikh, Esq
General Counsel and Business Development
J.D. NYU / Morrison & Foerster / clerk Chief Judge Rosen E.D. Michigan / California Senate Fellow
Dr. James McCarter, MD, PhD
Head of Research
Washington Univ MD, PhD / Prof of Genetics / Divergence Founder / Princeton Biology / Aspen Institute Fellow
David Bill
Head of Engineering
25 years experience building technology companies and teams / 16 software patents / big data expert
Shannon Field, MBA, MA
Head of Product
Stanford MBA, MA Education / Prior: Trulia, Pinterest, Disney, McKinsey & Company, Genentech
Dr. Mike Scahill, MD, MBA
Medical Director
Stanford MD, MBA / PLUS Residency at UCSF / Fulbright Scholar / Clinical Instructor at Stanford
Dr. Sarah Hallberg, DO, MS
Medical Director
Medical Director / Indiana Univ Health Medical Weight Loss / Executive Director at The Nutrition Coalition
Dr. Jeff Stanley, MD
Clinical Team
University of Southern California MD / UC Berkeley Biology / Prior: Internal Medicine Physician, Kaiser Permanente
Dr. Brittanie Volk, PhD, RD
Clinical Team
Dr. Amy McKenzie, PhD
Clinical Team
Dr. Brent Creighton, PhD
Clinical Team
Theresa Link, RD, CDE
Clinical Team
Bobbie Glon, RN
Clinical Team
Marcy Abner, RD
Clinical Team
Dr. Catherine Metzgar, PhD, RD
Clinical Team
Meredith Loring
Business Operations Lead
Erica Frandsen
Engineering
Neha Shevade
Engineering
Adam Ryan
Engineering
Jon Skulski
Engineering
Pete Petrash
UX Engineering
Deryk DeGuzman
Engineering
Ryan Nabat
Engineering
Camy Pearson
Business Operations
Penny Yuan
Product
Dr. Jackie Lee, PhD
Engineering
Joey Banks
Design
Kevin Baca
Operations & Support Lead
Lindsay Schweikert
Technical Recruiting
Bryce Aebi
Engineering
William Blase
Engineering
Amit Shah
Head of Ops & Customer Success
Kat Hawthorne
Engineering
Dr. Marlia Braun, PhD, RD
Clinical Team
Anna Barnwell, MSW, MPH
Clinical Team
Mike Payne, MBA, MSci
Head of Commercial & Policy
Ryan Whitney
Strategic Development
Dr. Nasir Bhanpuri, PhD
Clinical Informatics Data Scientist
Marc Mooney, MBA
Chief of Staff
Sarah Koenck, RDN
Clinical Team
Dian Xiao
UX Engineering

Scientific Advisors

Ronald M. Krauss, MD

Dr. Krauss is Senior Scientist and Director of Atherosclerosis Research at Children’s Hospital Oakland Research Institute, Adjunct Professor of Medicine at UCSF, and Adjunct Professor of Nutritional Sciences at UC Berkeley. He received his undergraduate and medical degrees from Harvard University with honors and served his internship and residency on the Harvard Medical Service of Boston City Hospital. He then joined the staff of the National Heart, Lung, and Blood Institute in Bethesda, Maryland, first as Clinical Associate and then as Senior Investigator in the Molecular Disease Branch.

Dr. Krauss is board-certified in internal medicine, endocrinology and metabolism, and is a member of the American Society for Clinical Investigation, a Fellow of the American Society of Nutrition and the American Heart Association (AHA), and a Distinguished Fellow of the International Atherosclerosis Society. He has served on the U.S. National Cholesterol Education Program Expert Panel on Detection, Evaluation, and Treatment of High Blood Cholesterol in Adults, was the founding chair of the AHA Council on Nutrition, Physical Activity, and Metabolism, and is a National Spokesperson for the AHA.

Dr. Krauss has also served on both the Committee on Dietary Recommended Intakes for Macronutrients and the Committee on Biomarkers of Chronic Disease of the Institute of Medicine of the National Academy of Sciences. He has received numerous awards including the AHA Scientific Councils Distinguished Achievement Award, the Centrum Center For Nutrition Science Award of the American Society for Nutrition, the Distinguished Leader in Insulin Resistance from the International Committee for Insulin Resistance, and the AHA Award of Meritorious Achievement. In addition he has been the Robert I. Levy Lecturer of the AHA, the Edwin Bierman Lecturer for the American Diabetes Association, and the Margaret Albrink Lecturer at West Virginia University School of Medicine.

Dr. Krauss is on the editorial boards of a number of journals, and has been Associate Editor of Obesity, the Journal of Lipid Research, and the Journal of Clinical Lipidology. He has published over 400 research articles and reviews on genetic, dietary, and drug effects on plasma lipoproteins and coronary artery disease. Among his accomplishments is the identification of atherogenic dyslipidemia, a prevalent lipoprotein trait (high triglyceride, low HDL, and increase in small, dense LDL particles) that is associated with risk of cardiovascular disease and type 2 diabetes.

In recent years Dr. Krauss’ work has focused on interactions of genes with dietary and drug treatments that affect metabolic phenotypes and cardiovascular disease risk.

Bruce Bistrian, MD, PhD

Dr. Bistrian is Chief, Clinical Nutrition, Beth Israel Deaconess Medical Center and Professor of Medicine at Harvard Medical School. Dr. Bistrian is also the Chairman of the Executive Committee of the Division of Nutrition at Harvard. He is board certified in Internal Medicine with previous subspecialty qualifications in Critical Care Medicine.

Dr. Bistrian received his medical degree from Cornell University, his M.P.H. degree from Johns Hopkins University School of Hygiene and his Ph.D. in Nutritional Biochemistry and Metabolism from the Massachusetts Institute of Technology. His research interests are in protein calorie malnutrition, its pathophysiology and assessment, cytokine biology, and the nutritional support of critically ill patients.

Dr. Bistrian is the former President of the American Society for Parenteral and Enteral Nutrition and the American Society for Clinical Nutrition and was a member of the board of directors and past president of the Federation of American Society for Experimental Biology.

Dr. Bistrian serves on the editorial board of Critical Care Medicine. He formerly served on the editorial boards of the American Journal of Clinical Nutrition, Nutrition Reviews, Journal of Nutrition, Journal of the American College of Nutrition, Journal of Parenteral and Enteral Nutrition, Harvard Health Letter, Women's Health Watch, and Obesity and Behavior.

Dr. Bistrian is the 2004 recipient of the Joseph Goldberger Award in Clinical Nutrition from the American Medical Association and was elected a Fellow of the American Society for Nutritional Sciences in 2005. He is the author or co-author of more than 500 original publications in the scientific literature.

Dr. Frederick Hecht, MD

Dr. Hecht is the Osher Foundation Endowed Chair in Research in Integrative Medicine and a Professor of Medicine at the University of California San Francisco.  He is also Research Director of the Osher Center for Integrative Medicine.

Dr. Hecht received his MD from SUNY Health Science Center at Brooklyn, and completed Internal Medicine residency at Montefiore Medical Center/ Albert Einstein College of Medicine Residency Program in Social Medicine. He received training in clinical research methods during a fellowship in Clinical Epidemiology at UCSF.

Following fellowship, Dr. Hecht developed a multidisciplinary research program investigating early (primary) HIV infection. This work has built one of the largest and most productive cohort studies of early HIV infection in the world, the Options Project, with funding from the National Institutes of Health (NIH) and Centers for Disease Control (CDC).  This research has investigated the clinical, epidemiological, immunologic, virologic, and behavioral aspects of primary (initial) HIV infection. He has served as co-director of the UCSF Center for AIDS Research Behavioral and Epidemiology core, a board member of the HIV Medicine Association, and an Associate Editor of AIDS Clinical Care.

At the UCSF Osher Center, Dr. Hecht has built a research program that focuses on diet, lifestyle, and mind-body interventions. His research includes approaches to improve adherence to diet in diabetes and obesity, as well as comparing diet approaches in diabetes. He is the author of over 200 peer-reviewed articles, and has been the principal investigator of 13 grants from the National Institutes of Health (NIH) or Centers for Disease Control. He directs the UCSF Training in Research in Integrative Medicine fellowship program, funded by NIH. He is very active in training the next generation of researchers, including serving as a key mentor for 8 successful NIH K-grant junior career development awardees.

Dr. Hecht has practiced yoga and meditation for more than 30 years, which helped form his interest in rigorous research on the biological effects of these practices. He is also an avid distance runner and cyclist.

Healthcare Industry Advisors

Senator Bob Kerrey

Senator Kerrey was trained in pharmacy before becoming Nebraska's Governor and Senator. He is currently a Managing Director of Allen & Company LLC, the lead financial advisor to Virta Health.

Dr. Peter Attia, MD

Dr. Attia is the founder of Attia Medical, PC, a medical practice with offices in San Diego and New York City, focusing on the applied science of longevity and optimal performance. The practice applies nutrition science, lipidology, four-system endocrinology, sleep physiology, stress management, and exercise physiology to minimize the risk of chronic disease onset, while simultaneously improving healthspan.

Dr. Attia trained for five years at the Johns Hopkins Hospital in general surgery, where he was the recipient of several prestigious awards, including resident of the year, and the author of a comprehensive review of general surgery. He also spent two years at NIH as a surgical oncology fellow at the National Cancer Institute where his research focused on immune-based therapies for melanoma.  He has since been mentored by some of the most experienced and innovative lipidologists, endocrinologists, gynecologists, sleep physiologists, and longevity scientists in the United States and Canada.

Dr. Attia was the founder and president of a medical research organization that funded human clinical trials in nutrition and metabolic disease. During his four years as president, they raised and deployed over $40 million.

Dr. Attia earned his MD from Stanford University and holds a B.Sc. in mechanical engineering and applied mathematics.

Dr. Zeev E. Neuwirth, MD

Dr. Neuwirth was appointed Senior Medical Director of Population Health for the Carolinas Healthcare System (CHS) in November 2016. In this newly created position within CHS, he serves as the senior most physician responsible for advancing the system’s value focused strategies.

Prior to this appointment, Dr. Neuwirth served as the Senior Medical Director for Primary Care Services within CHS, which proactively provides primary medical care to over 1.1 million patients, and serves a community of over 2 million people in the greater Charlotte area. He was responsible for leading the redesign of the Primary Care ecosystem at CHS and also served as an executive leader in Population Health, Care Management, Retail Care & Virtual Medicine. Prior to joining CHS, Zeev served as Chief of Clinical Effectiveness & Innovation at Harvard Vanguard Medical Associates, a 600 physician multi-specialty practice located in Eastern Massachusetts.

Dr. Neuwirth has over a decade of experience in quality improvement, care redesign & innovation. His efforts to improve and transform healthcare delivery have been featured in Forbes, Fast Company, WebMD, the Yale School of Management Journal, The Boston Globe, The Charlotte Observer, and in two Harvard Business School case studies.

In 2011, he was awarded the Boston Mayoral Award for Innovation in Healthcare. In 2012, he was selected as one of 70 participants, from a pool of over 1000 applicants, into the Center for Medicare & Medicaid Services (CMMS) Innovation Fellows program. In 2014, he received an ‘Innovation in Healthcare’ award from the Charlotte Business Journal.

Dr. Neuwirth is an alum of Tufts University and the University of Pennsylvania School of Medicine. He received a Masters in Healthcare Management from the Harvard School of Public Health, where he continues to lecture on healthcare strategy & innovation.