Clinically-proven GI care for the whole you

Dr. Sameer Berry is a gastroenterologist dedicated to improving patient experiences and outcomes for people living with all types of digestive disorders. As co-founder and chief medical officer at Oshi Health, Dr. Berry has redesigned gastrointestinal (GI) speciality care to close the significant gaps in diagnosis and treatment, and to scale access to clinically-proven multidisciplinary care—including often-overlooked dietary and behavioral health support.

Kaitlin is a registered dietitian with more than 10 years of experience in evidence-based diet and nutrition care. At Oshi Health, she provides comprehensive nutrition support to help each of her patients meet their individual goals and increase nourishment as part of a balanced diet. Kaitlin provides tools to help people living with a wide range of digestive symptoms and conditions to feel empowered to navigate food choices with confidence. She employs evidence-based approaches to eating that help individuals best manage their concerns. An expert in a range of dietary approaches to managing gastrointestinal (GI) conditions, she has also completed advanced FODMAP training with Monash University.

Michael is a gastrointestinal (GI) physician assistant, clinically-trained in gastroenterology at Mass General Hospital in Boston. With more than 14 years of experience, he diagnoses and treats all GI conditions, with a specialty in inflammatory bowel disease (IBD, including Crohn’s disease and ulcerative colitis). Prior to joining Oshi Health, Michael helped build the Crohn’s and Colitis Center at Brigham and Women’s Hospital, where he served as a patient provider and the Associate Director of Program Development for their multidisciplinary IBD clinic.

A licensed clinical psychologist with expertise in medical and health psychology, Mariah Corneille, PsyD, helps people address the mind-body connection to optimize overall health and wellness. Dr. Corneille collaborates across integrated care teams to support patients with intersecting medical and behavioral health concerns, including treating a wide range of GI conditions. She has more than 10 years of experience
working in both inpatient and outpatient medical settings.

Dr. Treta Purohit is a board-certified gastroenterologist and hepatologist with comprehensive expertise in a range of digestive health issues, including inflammatory bowel disease (IBD), gastroesophageal reflux disease (GERD), and pancreaticobiliary disorders. In addition to serving as a medical director at Oshi Health, she is active in her private practice in the San Jose Bay Area. As the medical director of San Jose GI since 2019, she has skillfully guided the practice through a significant expansion, growing from four to 12 physicians, incorporating advanced practice providers, and enhancing procedural access.