Flanagan, Deidre A. MD

Cancer Services, General Surgery
Ascension Medical Group at 1501 Madison Street1501 S. Madison StreetAppleton, WI 54915(920) 738-2000 (Switchboard) 

Southern Illinois University School of Medicine

Medical Interests:

Varicose Veins
Thyroid Disease
Breast Cancer


"Hello, I’m Deidre Flanagan, a board certified general surgeon with Affinity Medical Group. I have a particular passion for the treatment of breast cancer, with emphasis on oncoplastic techniques to provide the best quality cancer and aesthetic outcomes for women. I also have an interest in daVinci robotic surgery and the surgical management of diseases of the thyroid and parathyroid glands. I believe that the best outcomes directly result from a strong team approach between patients and their physicians."

A native of Illinois, Dr. Flanagan earned her undergraduate degree with distinction in honors biology from the University of Illinois. She received her medical degree with institutional honors from Southern Illinois University and completed her residency at the Blodgett/St. Mary's General Surgery Residency in Grand Rapids, Mich. In 1999, she moved to the Valley and joined Affinity Medical Group.

Dr. Flanagan is a Fellow of the American College of Surgeons, a member of the American Society of Breast Surgeons, and holds a Hidden Scar™ Breast Cancer Surgery Certificate.

Dr. Flanagan has developed a broad and active practice, performing more than 400 cases a year. She has a particular interest in da Vinci robotic surgery and advanced laparoscopy, surgical management of diseases of the thyroid and parathyroid glands, breast cancer surgery and laser varicose vein treatments.

In addition, she has held several leadership roles within Affinity, including membership on the St. Elizabeth Hospital Foundation Board, director of the Breast Cancer Conference, the Physician Governance Council, and experience with the Medical Executive Committee and as the chairman of the Department of Surgery.

Outside of work, Dr. Flanagan enjoys spending time with her husband and two sons. Favorite activities include waterskiing at the lake, shooting sporting clays, watching her sons play hockey, running, and finding time for a good book.


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1506 S. Oneida St
Appleton, WI 54915
(920) 738-2000

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