Steven L McCune, MD - Northwest Georgia Oncology Center

Yuanyue (CeCe) Sun, MD joined the cancer care team of Northwest Georgia Oncology Centers, P. C. (NGOC) in 2025. Her academic background includes Residency (Internal Medicine) and also a Fellowship (Hematology and Medical Oncology)at Baylor College of Medicine, Houston Texas. Dr. Sun provides patient-centered cancer care at NGOC's Marietta Cancer Center.

Upon completion of his Fellowship at the University of Tennessee in Memphis in 2001, Dr. Oyola joined Northwest Georgia Oncology Centers, P. C. (NGOC) and served at its Austell Cancer Center for a decade before moving his practice to Marietta in 2011. As a Principal Investigator of NGOC's William S. Gibbons Cancer Research Institute, Dr. Oyola leads NGOC's participation in national cancer research and clinical trials. With a special interest in solid tumors, he is dedicated to finding a cancer cure and providing his patients with the most advanced cancer treatment available in Georgia. Dr. Oyola is the past chairman WellStar Cancer Committee and WellStar Cobb Hospital Credentials Committee and served on the WellStar Oncology Cabinet

Carmen M. Klass, MD, PhD moved to the United States in 1996 from her native Germany to become a Research Fellow in Cell Biology at the University of Alabama at Birmingham and complete her cancer training at the Winship Cancer Institute at Emory University in Atlanta where she received numerous honors for her clinical skills and research. Specializing in the treatment of breast and gastrointestinal cancers, Dr. Klass is actively involved in cancer research and clinical trials to find a cancer cure and provide her patients with the most advanced cancer treatment available in Georgia. Dr. Klass provides patient-centered cancer care at NGOC's Marietta Cancer Center and Cherokee Health Park.