Zachary Baker, MD - CLOSED

TidalHealth Peninsula Regional, located in Salisbury, Maryland, stands as the oldest healthcare institution on the Delmarva Peninsula, with a legacy dating back to 1897. As the region’s largest tertiary care facility, it offers an extensive range of specialty services, including cardiothoracic surgery, neurosurgery, joint replacement, comprehensive cancer care, and emergency and trauma services. The hospital is also recognized for its advanced cardiac care at the TidalHealth Guerrieri Heart & Vascular Institute and cancer treatment at the TidalHealth Richard A. Henson Cancer Institute. With a commitment to excellence and community-focused care, TidalHealth Peninsula Regional is proud to be a trusted healthcare provider for residents across the Delmarva region.

Steven Wisniewski, PA-C received his Bachelor of Science in Biology from Ursinus College in Collegeville, Pa.; his physician assistant certificate from Anne Arundel Community College in Annapolis, Md.; and his Master of Medical Science from Saint Frances University in Loretto, Pa. He also completed a postgraduate surgical physician assistant residency at Johns Hopkins Hospital in Baltimore, Md. Wisniewski has more than a decade of experience as a cardiovascular surgery physician assistant, as well as special training and certifications in many areas, including extracorporeal life support in adult critical care and advanced cardiac life support.

Justinian R. Ngaiza, MD, PhD earned his medical degree from Muhimbili University College of Health and Allied Sciences in Dar es Salaam, Tanzania. He completed his internship and residency at Washington Hospital Center in Washington, D.C., and his fellowship at Georgetown Lombardi Comprehensive Cancer Center, also in Washington, D.C. Dr. Ngaiza is board certified in internal medicine, hematology and medical oncology. Learn more about cancer services