Julie A. Billar, M.D.

Julie Billar, M.D., is a surgical breast oncologist at Mayo Clinic in Arizona and the Mayo Clinic Comprehensive Cancer Center. She completed her General Surgery residency at Mayo Clinic in Arizona, and subsequently completed a dedicated Breast Surgical Oncology Fellowship at the John Wayne Cancer Institute. Dr. Billar spent the next decade as faculty at Banner MD Anderson Cancer Center in Gilbert, Arizona, where she also served as the Medical Director for the Multi-Disciplinary Breast Program, focusing on collaboration and implementing evidence-based cancer protocols within teams serving the wider Phoenix Metro community.

In 2023, Dr. Billar returned to Mayo Clinic in Arizona, and her clinical practice focuses entirely on patients with breast health needs. She emphasizes patient education and shared decision-making to ensure that the patient remains the center of the care plan. Dr. Billar has special interests in applying advanced surgical techniques for the management of breast cancer, reducing the risk of breast cancer in patients with genetic susceptibility to cancer, and streamlining the multi-disciplinary management of patients with higher risk disease presentations, including inflammatory breast cancer, triple negative breast cancer, patients who present with lymph node metastasis, and patients diagnosed at a young age.