Departments and specialties

Mayo Clinic has one of the largest and most experienced practices in the United States, with campuses in Arizona, Florida and Minnesota. Staff skilled in dozens of specialties work together to ensure quality care and successful recovery.

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Displaying 1-3 out of 3 doctors available

Last Name Initial: J

  1. James W. Jakub, M.D.

    James W. Jakub, M.D.

    1. Surgical Oncologist
    2. General Surgeon
    1. Jacksonville, FL
    Areas of focus:

    Breast surgery, Breast cancer surgery, Lymphadenectomy, Melanoma surgery, Sentinel node biopsy, Sentinel lymph node sur...gery, Nipple-sparing mastectomy, Lymph node biopsy, Minimally invasive surgical staging, Breast cancer, Melanoma, Merkel cell carcinoma

  2. Sarah E. James, M.D., Ph.D.

    Sarah E. James, M.D., Ph.D.

    1. Radiation Oncologist
    1. Phoenix, AZ
    Areas of focus:

    Radiation therapy, Radiation therapy for breast cancer, Brachytherapy, Proton therapy, External beam radiation therapy,... Proton therapy for prostate cancer, Radiation therapy for prostate cancer, Prostate cancer, Breast cancer, Bladder cancer, Cervical cancer, Endometrial cancer, Testicular cancer, Urethral cancer

  3. Jeffrey E. Johnson, M.D.

    Jeffrey E. Johnson, M.D.

    1. Surgical Oncologist
    1. Rochester, MN
    Areas of focus:

    Breast biopsy, Breast surgery, Mastectomy, Lumpectomy, Excisional biopsy, Breast duct excision, Wire localization for b...reast surgery, Prophylactic mastectomy, Breast cancer surgery, Lymphadenectomy, Radioactive seed localization, Melanoma surgery, Sentinel node biopsy, Minimally invasive surgery, Modified radical mastectomy, Sentinel lymph node surgery, Oncoplastic breast-conserving surgery, Nipple-sparing mastectomy, Skin-sparing mastectomy, TVEC injection, Lymph node biopsy, Double mastectomy, Breast abscess drainage, Breast cancer, Skin cancer, Fibroadenoma, Atypical hyperplasia of the breast, BRCA gene mutation, Melanoma, Breast cysts and lumps, Lobular carcinoma in situ, Squamous cell carcinoma of the skin, Ductal carcinoma in situ, Invasive lobular carcinoma, Paget's disease of the breast, Inflammatory breast cancer, Recurrent breast cancer, Tubular breast cancer, Male breast cancer, Merkel cell carcinoma, Triple-positive breast cancer, Triple-negative breast cancer, Medullary breast cancer, HER2-positive breast cancer, Squamous cell carcinoma of the breast, Invasive ductal carcinoma, Luminal A breast cancer, Phyllodes tumor, Luminal B breast cancer, Papillary breast cancer, Mucinous breast cancer, Paget's disease of the nipple, Stage 4 breast cancer, Atypical lobular hyperplasia, Atypical ductal hyperplasia

Research

Doctors discussing imaging test results

Mayo Clinic doctors and scientists are continually working to improve breast cancer diagnosis and treatment.

Mayo Clinic researchers are involved in many studies related to breast cancer prevention, diagnosis and treatment. Mayo Clinic doctors often inform eligible patients about opportunities to participate in research studies and clinical trials related to advancements in the treatment of breast cancer.

Areas of research include:

  • Analyzing the genetic makeup of breast cancer cells to understand how DNA changes affect response to cancer treatments and personalize treatment options.
  • Harnessing the power of viruses to treat noninvasive breast cancer, triple-negative breast cancer and metastatic breast cancer.
  • Innovative breast imaging techniques, such as dynamic contrast-enhanced MRI, contrast-enhanced digital mammography and molecular breast imaging.
  • Making treatment safer using new technology, such as proton beam therapy to shape radiation beams that reach left-sided breast cancer but spare the heart.
  • Refinement of the list of genes that are involved in the development of breast cancer to improve the use of genetic testing.

Mayo Clinic Comprehensive Cancer Center is one of a select group of facilities that received a Specialized Program of Research Excellence (SPORE) grant for breast cancer research from the U.S. National Cancer Institute. Learn more about the Mayo Clinic Breast Cancer SPORE.

A patient undergoing molecular breast imaging

People who seek care at Mayo Clinic have a chance to participate in clinical trials studying the latest techniques for breast cancer diagnosis and treatment.

Publications

See a list of publications about breast cancer by Mayo Clinic doctors on PubMed, a service of the National Library of Medicine.

Research Profiles

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July 26, 2025

Living with breast cancer?

Connect with others like you for support and answers to your questions in the Breast Cancer support group on Mayo Clinic Connect, a patient community.

Breast Cancer Discussions

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Genetic testing...does anyone have the CHEK2 gene mutation?

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