- New patient appointments: 314-747-7222
- Established patient appointments: 314-362-2280
Washington University oncologic and endocrine surgeons provide the most up-to-date care for diseases of the breast and endocrine system (the adrenal glands, pancreas, parathyroid, thyroid and other endocrine organs), melanoma and sarcoma, while seeking to advance treatment of these diseases through innovative research.
![Rebecca L. Aft](https://physicians.wustl.edu/wp-content/uploads/2020/06/Rebecca-Aft-280x386.jpeg)
Rebecca L. Aft, MD, PhD
Surgical Oncology
Locations:
Center for Advanced Medicine Breast Health Center
![Taylor C. Brown](https://physicians.wustl.edu/wp-content/uploads/2020/06/Taylor-Brown-280x386.jpeg)
Taylor C. Brown, MD, MHS
Surgical Oncology
Locations:
Center for Advanced Medicine Breast Health Center
![Timothy J. Eberlein](https://physicians.wustl.edu/wp-content/uploads/2020/06/Timothy-Eberlein-280x386.jpg)
Timothy J. Eberlein, MD
Surgical Oncology
Locations:
Center for Advanced Medicine Breast Health Center
![](https://physicians.wustl.edu/wp-content/uploads/2020/06/FieldsR_300-280x386.jpg)
Ryan C. Fields, MD
Surgical Oncology
Locations:
Center for Advanced Medicine Gastrointestinal Center
Barnes-Jewish West County Hospital – Siteman Cancer Center Medical Office Building 2
![](https://physicians.wustl.edu/wp-content/uploads/2020/06/Gillanders-Will_Surg__01_1400x1930-280x386.png)
William E. Gillanders, MD
Surgical Oncology
Locations:
Center for Advanced Medicine Breast Health Center
![Katherine Glover-Collins](https://physicians.wustl.edu/wp-content/uploads/2020/06/Katherine-Glover-Collins-280x386.jpeg)
Katherine Glover-Collins, MD, PhD
Surgical Oncology
Locations:
Center for Advanced Medicine Breast Health Center
Christian Hospital – Medical Office Building 1
Siteman Cancer Center – North County
![Julie A. Margenthaler](https://physicians.wustl.edu/wp-content/uploads/2020/06/Julie-Margenthaler-280x386.jpg)
Julie A. Margenthaler, MD, FACS
Surgical Oncology
Locations:
Center for Advanced Medicine Breast Health Center
![John Olson, MD](https://physicians.wustl.edu/wp-content/uploads/2022/07/Olson-John_Surg_12_300-280x386.jpg)
John A. Olson Jr., MD, PhD
General Surgery
Surgical Oncology
Locations:
Center for Advanced Medicine Breast Health Center