care is at our core.
executive leadership
George 'GB' Pratt
Founder & CEO
G.B. has a passion for healthcare innovation and delivering services that exceed expectations. With a history of gluten sensitivity and a desire to help patients take control of their health, he founded ModifyHealth in 2018 to bring relief to those suffering from conditions such as IBS, IBD, NAFLD, and celiac disease, where dietary modification is a recommended treatment. Prior to ModifyHealth, G.B. helped launch EndoChoice, a developer of innovative healthcare products and services for the GI space. G.B. led one of the organization’s three divisions, serving as VP & GM of Technology Enabled Services. EndoChoice grew from a startup in 2008 to public offering in 2015 (NYSE: GI) and final sale to Boston Scientific in 2016 (NYSE: BSX). G.B. has served in a variety of management positions for healthcare organizations. He was the co-founder and CEO of VLink, an integration platform that was ultimately sold to Portico Systems, a partner company of Safeguard Scientifics (NYSE: SFE). From 2002 to 2006 he held several roles, including Vice President of Sales for Eko Systems, a provider of hospital-based EMR’s for the perioperative space. When not in the office, G.B. enjoys spending time with family and friends, playing golf and rooting for Philly sports.
Ryan Moskowitz
Chief Brand & Marketing Officer
Having a close personal connection to the IBD and IBS space, Ryan helped launch the ModifyHealth pilot in 2018 to bring relief to those suffering from conditions such as IBS, IBD, NAFLD, and celiac disease. Prior to ModifyHealth, Ryan was the Senior Director of Marketing and Communications at EndoChoice, an innovative medtech company delivering a broad portfolio of innovative devices and diagnostics for the GI space. Ryan helped build the EndoChoice brand from a basement concept in 2008 to a public offering in 2015 (NYSE: GI) and final sale to Boston Scientific in 2016 (NYSE: BSX). Ryan is a multi award-winning brand marketer with a history of building successful and meaningful brands for both startups and Fortune 10 companies across a wide variety of industry verticals including Retail, Finance, SaaS, Luxury and Medical. Outside of the office, Ryan enjoys spending time with his family, attending car shows and is an avid collector of TV and film props.
Hagan Jordan
Cheif Commercial Officer
Hagan has a history of commercializing innovative products and services to healthcare providers that have dramatic impact on patient care. With this background, Hagan decided to join the ModifyHealth team to impact patients' currently suffering from GI diseases that require dietary modification. Prior to ModifyHealth, Hagan helped launch EndoChoice, a developer of innovative healthcare products and services for the GI space. While at EndoChoice, Hagan served in multiple sales and marketing leadership roles including Global Marketing Leader for Imaging & Technology Enabled Services as as well as Senior Director of Marketing. EndoChoice grew from a startup in 2008 to public offering in 2015 (NYSE: GI) and final sale to Boston Scientific in 2016 (NYSE: BSX). During Hagan’s time at Boston Scientific, he served in multiple roles including Group Manager of Pathology and Marketing Channel Manager for the GI Ambulatory Surgery Center Division. When not in the office, Hagan enjoys spending time with family and friends and watching any and all sports, especially Clemson football. As a former college golfer at Furman University, Hagan cherishes the opportunity to play a round of golf when time allows.
Dexter Shurney, MD, MPH, MBA
Chief Medical Officer
Dr. Shurney is a recent past President of the American College of Lifestyle medicine and a recognized food as medicine authority. He has held numerous senior healthcare leadership roles including Chief Health Equity Officer at Adventist Health; Vice President, Chief Medical Officer at Blue Cross Blue Shield of Michigan; Chief Medical Officer, Executive Director of Global Employee Benefits at Cummins, Inc.; And, Chief Medical Director, Employee Health Plan at Vanderbilt University and Medical Center. During his tenure at Vanderbilt, he held dual faculty appointments at Vanderbilt University Medical Center, and the Owens Graduate School of Business. Dr. Shurney received his BS from Loma Linda University and his MD from Howard University College of Medicine. He also has an MBA and MPH from the University of Detroit/Mercy and the Medical College of Wisconsin, respectively. A licensed physician, he is board certified in both preventive medicine and in lifestyle medicine, and is a Fellow in the American College of Lifestyle Medicine.
Jen Lane
Vice President, Healthcare Programming
With nearly two decades of experience in the nonprofit sector and advocacy at both state and federal levels, Jen is deeply committed to addressing health and social inequities. She is passionate about transforming national perspectives on nutritional insecurity, advocating for comprehensive solutions beyond mere food access. At ModifyHealth, Jen leads the integration of food as medicine interventions, working with payors, value-based care systems, and community organizations. Her innovative Medicaid programs tackle social determinants of health and access barriers, using Community Health Workers and wraparound social services to engage underserved populations, improve health outcomes, and rebuild trust in the healthcare system. Before joining ModifyHealth, Jen led teams in both CPG Sales and Corporate Social Responsibility. She was pivotal in bridging the gap between for-profit companies and nonprofits, fostering strategic partnerships that enhanced community engagement and showcased corporate commitment to social service initiatives. Outside of work, Jen enjoys kayaking, petting all the dogs, and convincing her teenage daughter that she’s still the coolest.
Madison Reeder, RD
Director of Clinical Operations
As a Registered Dietitian with a decade of experience in the healthcare industry, Madison has been instrumental in advancing innovative nutrition and telehealth programs that improve patient outcomes and accessibility to care. At ModifyHealth, Madison leads the development and implementation of comprehensive telehealth services, integrating care seamlessly with multiple health plans across the country. Madison is passionate about creating health equity for all, leveraging nutrition to prevent chronic diseases, personalize treatment, and address food security issues. Her dedication to empathetic engagement and respect for individuals drives her commitment to transforming the field of nutrition and healthcare. Her expertise in medical nutrition therapy (MNT) and patient engagement has been pivotal in creating scalable, evidence-based food programs. Madison has successfully grown and trained a network of clinicians to provide the highest quality care, tailored to meet the needs of each patient. Additionally, Madison’s operational strengths ensure excellence and continuous improvement. She has founded research on dietetics outcomes, improved clinical structures for dietitians in telehealth, and enhanced strategic initiatives among health plans and partners throughout the nation. Madison's unwavering commitment to improving health outcomes through strategic nutrition interventions underscores her dedication to making a meaningful impact in the healthcare field.
clinical advisory board
Patsy Catsos,MS, RDN, LD
Founder, Patsy Catsos Advanced Nutrition LLC Author, IBS - Free at Last!, IBS Elimination Diet and Cookbook
Patsy Catsos is a registered dietitian nutritionist with a private practice in New Hampshire. She has been using the FODMAP approach with her patients since 2008. She earned degrees in nutrition at Cornell University and Boston University and trained at Boston’s Beth Israel Hospital. After reading the early peer-reviewed literature about FODMAPs out of Australia’s Monash University Department of Gastroenterology, Patsy set about developing a program to help her patients with IBS free themselves from the devastating symptoms of IBS. Keenly interested in digestive health and nutrition since her own diagnosis with ulcerative colitis 25 years earlier, she had never seen a dietary approach for managing gastrointestinal symptoms produce such fast, effective results. Her 2009 book, IBS—Free at Last! introduced consumers and health care providers to the power of the FODMAP elimination diet. The latest edition of her book and program, retitled The IBS Elimination Diet and Cookbook, was published in 2017 by Harmony Books, an imprint of Penguin Random House. Patsy happily divides her time between caring for her own patients, keeping tabs on the latest digestive health research, and teaching other health care providers how to help their patients get great results with the FODMAP approach.
Lin Chang,MD, AGAF
Professor of Medicine in the Vatche and Tamar Manoukian Division of Digestive Diseases and Department of Medicine David Geffen School of Medicine at UCLA
Lin Chang, MD, is a Professor of Medicine and Vice-Chief of the Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine at the David Geffen School of Medicine at UCLA. She serves as the Co-Director of the G. Oppenheimer Center for Neurobiology of Stress and Resilience at the David Geffen School of Medicine at UCLA. She is also Program Director of the UCLA Gastroenterology Fellowship Program. Dr. Chang’s clinical expertise is in functional gastrointestinal disorders. Her research focuses on brain-gut interactions underlying irritable bowel syndrome (IBS), specifically, the pathophysiology of IBS related to stress, early life adversity, sex differences, genetic and epigenetic factors, and gut microbiome and the treatment of IBS. She is a fellow of the American Gastroenterological Association (AGA) and served as Vice-Chair of the Neurogastroenterology and Motility section of the AGA Council before being selected to be Clinical Research Councilor of the AGA Governing Board. Dr. Chang is the recipient of the Janssen Award in Gastroenterology for Basic or Clinical Research and the AGA Distinguished Clinician Award. She previously served as President of the American Neurogastroenterology and Motility Society (ANMS). She is Associate Editor of Clinical Gastroenterology and Hepatology. She is a member of the Rome Foundation Board of Directors, NIH Clinical, Integrative, Molecular Gastroenterology (CIMG) Study Section, and FDA GI Drug Advisory Committee. She has authored more than 120 original research articles, 55 review articles, and 20 book chapters on her specialty interests.
William D. Chey,MD, AGAF, FACG, FACP, RFF
Timothy T. Nostrant Collegiate Professor of Gastroenterology Professor of Nutrition Sciences Director, GI Physiology Laboratory Director, Digestive Disorders Nutrition & Behavioral Health Program Director, Michigan Food for Life Kitchen Medical Director, Michigan Bowel Control Program Division of Gastroenterology Michigan Medicine
Dr. Chey received a medical degree & training in internal medicine at Emory University School of Medicine. He completed a fellowship in gastroenterology and has remained as faculty at the University of Michigan in Ann Arbor where he is currently the Timothy T. Nostrant Collegiate Professor of Gastroenterology & Nutrition Sciences. His research interests focus on the diagnosis & treatment of functional bowel disorders and H. pylori infection. He has mentored more than 50 students, residents, fellows and junior faculty, many of which are leaders in Gastroenterology. He is a medical innovator and holds several patents. Dr. Chey is former co-Editor-in-Chief of the American Journal of Gastroenterology and has authored more than 350 manuscripts, reviews, chapters & books including more than 10 national and international clinical practice guidelines. Dr. Chey is a board member of the American College of Gastroenterology, Rome Foundation, American Neurogastroenterology & Motility Society, International Foundation of Functional GI Disorders, and GI on Demand. He has been elected to “Best Doctors” since 2001 and received the Dean’s Outstanding Clinician Award and Dean’s Award for Innovation and Commercialization at the University of Michigan and the Distinguished Clinician Award from the American Gastroenterological Association.
Scott R. Ketover,MD, AGAF
President & CEO, Minnesota Gastroenterology, P.A.
Dr. Scott Ketover proudly serves as the President and CEO of MNGI Digestive Health, one of the largest independent gastroenterology practices in the country. He completed his medical degree, residency, and GI Fellowship at the University of Minnesota. Dr. Ketover also serves as the Chairman of the 3,000-physician member Allina Integrated Medical Network, an ACO. Dr. Ketover previously served as the Founding President of the Digestive Health Physicians Association, a national patient care advocacy organization of 2,200 independent gastroenterologists, and he is the Founding President of the 1,200 physician member Digestive Health Network. Dr. Ketover believes that in the future many illnesses, as well as the promotion of wellness, will be improved by therapeutic diets and changes in the intestinal microbiome. In addition to his clinical interests, he is also deeply committed to physician leadership and practice management and is a Fellow of the AGA and the ASGE. He is originally a native of New York City. Dr. Ketover enjoys running and traveling with his family.
Glenn Littenberg,MD, MACP, AGAF, FASGE
Chief Medical Officer, inSite Digestive Healthcare Chair, Reimbursement Committee and CPT Advisor, ASGE
While maintaining a private Gastroenterology practice and independent ambulatory endoscopy center in Pasadena, California, Dr. Littenberg has long represented GI and internal medicine to the AMA CPT Panel. In 2006, he completed an 8-year term on the Editorial Panel. Currently, Dr. Littenberg is the CPT Advisor for ASGE and chair of ASGE’s Reimbursement Committee and chaired the Practice Management Committee for 6 years. He wrote and edited many chapters of ASGE’s Coding Primer: A Guide for Gastroenterologists, and speaks widely on healthcare reform, coding, Medicare compliance, and trends in GI Practice. He has been a past course director for ASGE’s premier yearly Gastroenterology Outlook (GO) meeting. He is past President of his hospital’s medical staff and of California’s state Internal Medicine Societies. He is the Chief Medical Officer of his 60+ physician GI group, inSite Digestive Healthcare, which now spans from San Francisco to Orange County and is the largest independent GI group in California.
Michael L. Weinstein,MD
President & CEO, Capital Digestive Care, LLC
Dr. Michael Weinstein has been practicing medicine the Washington Metropolitan area since 1985 where he established the first outpatient endoscopy center in the Mid-Atlantic region, the first to be approved as a Medicare certified endoscopic ASC. He led the campaign to merge seven gastroenterology practices across the area to found Capital Digestive Care and is currently the President & CEO of the independent GI practice of 67 physicians. As a prominent member of the medical community, Dr. Weinstein represents the independent physician community in advocacy efforts in political policy and regulatory landscapes. He is the immediate past-president of the Digestive Health Physicians Association (DHPA) and is a current member of the American Gastroenterological Association’s Governing Board. He previously served as the Treasurer of the Medical Society of the District of Columbia and was the American Society of Gastrointestinal Endoscopy representative to the American Medical Association CPT Advisory Panel.
