Barbara Buttin, MD | Gynecologic Oncologist

Ajaz M. Khan, M.D. is a medical oncologist at City of Hope Chicago (formerly Cancer Treatment Centers of America [CTCA]). In his leadership role as Chief of Medical Oncology, Dr. Khan is responsible for guiding protocols, ensuring standard-of-care guidelines are consistently met and exceeded, and helping recruit high-quality physicians to City of Hope. In 2025, he was elected as the President of the Chicago Medical Staff. As an oncology doctor, Dr. Khan primarily focuses on treating patients with breast cancer, lung cancer, and gastrointestinal cancers. "My goal with my patients is to provide education, compassionate care and open lines of communication," says Dr. Khan.

Evan Pisick, M.D., is a medical oncologist at City of Hope Cancer Center Chicago (formerly Cancer Treatment Centers of America [CTCA]). He is board certified in medical oncology and hematology. He believes it's important for cancer patients and their loved ones to learn as much as they can about the disease. Dr. Pisick talks with his patients about their diagnosis and treatment and encourages them to ask questions. Dr. Pisick has researched and written extensively on small cell and non-small lung cancer, as well as malignant mesothelioma.

Laura Farrington, D.O. is a medical oncologist at City of Hope Cancer Center Chicago (formerly Cancer Treatment Centers of America [CTCA]), in Zion, Illinois. As a cancer doctor specializing in a wide range of cancer types, Dr. Farrington's goal is to empower her patients by helping them understand their disease and treatment options so they can make informed decisions about their care. "To me, patient-empowered care means choices," she says. "A physician should not just tell patients what to do, but help them decide which path is best for them." In addition to treating cancer, she also takes care of palliative patients' needs, ensuring that, regardless of diagnosis or outcome, they receive the care they need.