Dr. Seiden is an oncologist 30 years of experience spanning a variety of clinical and operational roles. He most recently served as the president of The US Oncology Network, the largest collection of community-based oncology care practices in the US and a leader in the delivery of value based oncology care and community-based clinical research. Previously, Dr. Seiden served as the senior vice president and chief medical officer of The US Oncology Network and McKesson Specialty Health. Before joining The Network, he served as CEO and president of Fox Chase Cancer Center, a National Cancer Institute-designated Comprehensive Cancer Center research facility and hospital in Philadelphia. Prior to Fox Chase, Dr. Seiden spent many years practicing oncology at Massachusetts General Hospital and Harvard Medical School, where he served as Chief of the Clinical Research Unit as well as the program director for Gynecologic Oncology for the Dana Farber/Harvard Cancer Center. Dr. Seiden currently serves on the Board of Nemucore Medical Innovations an early-stage life science company and Glide Health a healthcare IT company developing novel strategies to improve revenue cycle management. He also serves as a Director of the Damon Runyon Cancer Research Foundation. Previous Board roles have included Next Oncology and Medfusion prior to its sale to Quest.