MOS Board of Directors


Joseph Muscato_MOS
Joseph J. Muscato, MD, FACP
Medical Oncologist
Missouri Cancer Associates

Joseph J. Muscato, MD, FACP, was one of the founding physicians of Missouri Cancer Associates in Columbia. He is a member of the American College of Physicians—where he has been elected fellow—and the American Society of Clinical Oncology.

His awards include induction into the Phi Beta Kappa and Alpha Omega Alpha Honor Societies, election as the Young Internist of the Year by the Missouri Society of Internal Medicine, and he is included in the Best Doctors in America, Mid-West edition and has been voted as one of the “Top Docs” in Columbia by VOX Magazine and Inside Columbia. Dr. Muscato is certified in internal medicine, hematology, and medical oncology by the American Board of Internal Medicine. 


Yifan Tu_MOS
Yifan Tu, MD, PhD
Assistant Professor, Department of Hematology/Oncology
Saint Louis University

Yifan Tu, MD, PhD, has been an assistant professor in the department of hematology/oncology at Saint Louis University since September 2014. She serves as principal investigator for a clinical trial involving breast cancer treatments, and has an Elsa U. Pardee Foundation grant for testing leukemia drug-resistance and related signaling pathways. Dr. Tu earned her medical degree at the Medical Center of Fudan University, followed by a PhD in molecular and cell biology from the University of Massachusetts.


Christos Papageorgiou
Christos Papageorgiou, MD, PhD, FACP
SSM St. Mary’s Health Center

Christos Papageorgiou, MD, is a hematology specialist in Saint Louis, Missouri, and has been practicing for 21 years. He graduated from Aristotle University of Thessaloniki in 1994.


Debra Tesoro, RPh, BCOP
Pharmacist-in-Charge, Investigational Drug Service
Washington University Infusion Center Pharmacy


Susie O'Neill, RN, MSN, OCN
Clinical Nurse Manager
Missouri Baptist Medical Center
Greg Voelkel, RN, BSN, OCN
Nurse Administrator
Washington University School of Medicine

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Rockville, MD 20850
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