Jena Pizula, MD

Dr. Zhang is passionate about all aspects of gastroenterology and hepatology. She has a special interest in colorectal cancer prevention, inflammatory bowel disease, irritable bowel syndrome, and esophageal disorders. Dr. Zhang values the unique patient-physician relationship and embraces the opportunity to educate her patients about their GI issues and their overall well-being. She has authored multiple research articles and prioritizes up-to-date and evidence-based medicine.

Dr. Njoroge is a board-certified physician and fellowship-trained cardiologist with the Advanced Heart Failure Program at Stanford Health Care. She is also a clinical assistant professor of medicine in the Division of Cardiovascular Medicine. Dr. Njoroge has extensive clinical experience diagnosing and treating cardiovascular complications that develop during pregnancy or postpartum. She currently provides care at the Stanford Health Care Heart and Vascular Clinic with a particular focus on patients with a history of pregnancy-associated heart failure and cardiomyopathy.

Dr. Jalil is a board-certified, fellowship-trained transplant hepatologist (liver doctor) and gastroenterologist at the Stanford Health Care Digestive Health Center in San Jose, California. He is also a clinical associate professor in the Department of Medicine, Division of Gastroenterology and Hepatology, at Stanford University School of Medicine.Dr. Jalil has extensive experience helping patients with a range of liver- and digestion-related conditions. He specializes in liver transplantation, and his other clinical interests include all forms of hepatitis, cirrhosis of the liver, fatty liver disease, polycystic liver disease, and primary sclerosing cholangitis (swelling and scarring of the bile ducts).