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Samer Eldika

Clinical Professor, Medicine - Gastroenterology & Hepatology

BioDr. Eldika received his medical education at the American University of Beirut. He completed his General Gastroenterology Fellowship at the State University of New York in Buffalo and Advanced Endoscopy Fellowship at the University of Virginia. At Ohio State University, he served as the Director of Interventional Endoscopy and Endoscopic Quality. His time at Ohio State University contributed to the growth and maturity of his experience and skills in interventional endoscopy. During his tenure there, he played a major role in building the program of interventional endoscopy in general, as well as interventional endoscopy for the pediatric age group, and the endoscopic quality program. Over the years, he was involved in training several gastroenterology fellows and interventional endoscopists. He recently joined Stanford University where he continues to practice interventional endoscopy and train fellows.
He is a board-certified Gastroenterologist with clinical interests in pancreaticobiliary diseases, gastrointestinal neoplasia, and related interventional endoscopic procedures. As an endoscopist, he has extensive experience in performing a variety of interventional endoscopic procedures. These procedures include endoscopic ultrasound (EUS)-guided procedures like fine needle aspiration/biopsy, injections, fiducial placement, pseudocyst drainage/necrosectomy, biliary drainage, gastrojejunostomy, transgastric ERCP, and needle-based confocal endomicroscopy for the evaluation of pancreatic cystic lesions. He also performs endoscopic retrograde cholangiopancreatography (ERCP), endoscopic mucosal resection, enteral and stenting, enteral feeding tube placement, as well as deep enteroscopy.
His research interest evolves around interventional endoscopy, more specifically in the evaluation of pancreatic cystic lesions. Dr. Eldika has received multiple awards in his career, his most recent one being the “Reviewer Award, April 2020,” for his superior contributions to the journal of Gastrointestinal Endoscopy, both through completing high numbers of reviews and for submitting the highest quality of work.
Dr. Eldika is a fellow of the American Society of Gastrointestinal Endoscopy. He is a member of the American Gastroenterological Association, American College of Gastroenterology, and American Pancreatic Association.
When not working Dr. Eldika enjoys reading, listening to music, watching sports and walking in nature.

Aly Elezaby, MD PhD

Instructor, Medicine - Cardiovascular Medicine

Timothy Ellis-Caleo, MD

Clinical Assistant Professor, Medicine - Oncology

BioDr. Timothy Ellis-Caleo is a board-certified, fellowship-trained medical oncologist with Stanford Health Care. He is also a clinical assistant professor in the Department of Medicine, Division of Oncology at Stanford University School of Medicine.

Dr. Ellis-Caleo specializes in caring for people with thoracic and gastrointestinal cancers. His clinical interests include immunotherapy and precision oncology, with a focus on bringing the latest advances in cancer treatment to patients. He works closely with each patient to develop personalized treatment plans that reflect their goals, values, and individual needs while incorporating evidence-based therapies and access to innovative clinical trials when appropriate.

As a physician-researcher, Dr. Ellis-Caleo focuses on improving treatments for patients with solid tumors through translational research and clinical investigation. His research has explored the tumor microenvironment and its role in predicting response to immunotherapy, molecular biomarkers for lung cancer, and the use of artificial intelligence to improve cancer care and surveillance.

Dr. Ellis-Caleo has authored numerous peer-reviewed publications in leading medical journals, including Nature Cancer, Nature Communications, NPJ Digital Medicine, and Journal of Clinical Oncology (JCO) Precision Oncology. He has presented his research at national and international meetings, including the American Society of Clinical Oncology Annual Meeting and the World Conference on Lung Cancer.

Dr. Ellis-Caleo is a member of Alpha Omega Alpha Honor Medical Society and Sigma Xi, The Scientific Research Honor Society.

Hany Elmariah

Associate Professor of Medicine (Blood and Marrow Transplantation and Cellular Therapy)

BioDr. Hany Elmariah is an Associate Professor in the Division of Blood and Marrow Transplantation and Cellular Therapy at Stanford University. Dr. Elmariah earned his MD and his MS in Biomedical Engineering at the University of Florida. He completed an Internal Medicine Residency at Duke University. Dr. Elmariah then completed a Hematology and Oncology Fellowship at Johns Hopkins University, where he also served as Chief Fellow. He then was a faculty member at the Moffitt Cancer Center before joining the faculty at Stanford University. Dr. Elmariah's clinical focus is allogeneic transplant for myeloid malignancies including acute myeloid leukemia, myelodysplastic syndromes, and myeloproliferative neoplasms. His research is focused on haploidentical and mismatched unrelated donor blood and marrow transplantation and novel cellular therapies for myeloid malignancies.

Michelle Yixiao Engle, MD

Clinical Assistant Professor, Medicine - Primary Care and Population Health

BioDr. Michelle Engle grew up in Virginia, though she has also lived in China and Canada. She moved to California for medical training and quickly grew attached to the Bay Area. She is board-certified in family medicine and palliative medicine, providing holistic care to patients of all ages.

Her hobbies include barre, board games, escape rooms, cooking, and rock climbing.

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