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 1-10 out of 52 doctors available

  1. Safia K. Ahmed, M.D.

    Safia K. Ahmed, M.D.

    1. Phoenix, AZ
    Areas of focus:

    Radiation therapy, Brachytherapy, Proton therapy, Stereotactic radiosurgery, Intraoperative radiation therapy, Intensit...y-modulated radiation therapy, Breast cancer, Soft tissue sarcoma, Pediatric central nervous system tumor

  2. Aman Anand, Ph.D.

    Aman Anand, Ph.D.

    1. Radiation Oncology Medical Physicist
    1. Phoenix, AZ
    Areas of focus:

    Radiation therapy, Proton therapy

  3. Khaled Aziz, M.D., Ph.D.

    Khaled Aziz, M.D., Ph.D.

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

    Total body irradiation, Brain stereotactic radiosurgery, Proton therapy, Stereotactic body radiotherapy, External beam ...radiation therapy, Prostate cancer, Multiple myeloma, Non-Hodgkin lymphoma, Hodgkin lymphoma, Cutaneous t-cell lymphoma, Leukemia, Lymphoma, Cutaneous b-cell lymphoma, Metastatic prostate cancer, Prostate cancer recurrence, Plasma cell disorders, Metastatic castration-resistant prostate cancer, Mycosis fungoides

  4. William G. Breen, M.D.

    William G. Breen, M.D.

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

    Radiation therapy, Brain stereotactic radiosurgery, Proton therapy, Intensity-modulated radiation therapy, Gamma knife ...surgery, Meningioma, Lung cancer, Mesothelioma, Brain cancer, Melanoma, Brain metastasis, Cutaneous t-cell lymphoma, Glioblastoma, Lymphoma, Glioma

  5. Ryan J. Brisson, M.D.

    Ryan J. Brisson, M.D.

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

    Radiation therapy, Proton therapy, Stereotactic body radiotherapy, External beam radiation therapy, Intensity-modulated... radiation therapy, Prostate cancer, Head and neck cancer, Skin cancer, Lung cancer, Brain cancer, Pediatric brain tumor, Sarcoma, Skull base tumor

  6. Paul D. Brown, M.D.

    Paul D. Brown, M.D.

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

    Radiation therapy, Brain stereotactic radiosurgery, Proton therapy, Stereotactic radiosurgery, Intensity-modulated radi...ation therapy, Brain tumor, Brain metastasis, Spinal tumor, Brainstem tumor

  7. Cameron M. Callaghan, M.D.

    Cameron M. Callaghan, M.D.

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

    Radiation therapy, Proton therapy, Stereotactic body radiotherapy, Stereotactic radiosurgery, Intraoperative radiation ...therapy, Radiation therapy for prostate cancer, Colon cancer, Hepatocellular carcinoma, Pancreatic cancer, Rectal cancer, Stomach cancer, Cholangiocarcinoma, Esophageal cancer, Anal cancer

  8. Kimberly S. Corbin, M.D.

    Kimberly S. Corbin, M.D.

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

    Radiation therapy for breast cancer, Proton therapy, External beam radiation therapy, Breast cancer

  9. Lauren A. Dalvin, M.D.

    Lauren A. Dalvin, M.D.

    1. Ophthalmologist
    1. Rochester, MN
    Areas of focus:

    Radiation therapy, Heat therapy, Chemotherapy, Brachytherapy, Proton therapy, Photodynamic therapy, Cryotherapy, Childh...ood cancer, Eye melanoma, Retinoblastoma, Vitreoretinal lymphoma, Uveal melanoma, Conjunctival melanoma, Ocular surface tumor

  10. Brian J. Davis, M.D., Ph.D.

    Brian J. Davis, M.D., Ph.D.

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

    Radiation therapy, PSMA therapy, Brachytherapy, Proton therapy, Proton therapy for prostate cancer, Radiation therapy f...or prostate cancer, Intensity-modulated radiation therapy, Prostate cancer, Bladder cancer

Research

Mayo Clinic doctors and researchers are actively studying and refining proton therapy techniques. They conduct clinical trials to improve treatment outcomes and understand the benefits of proton therapy for various cancers.

Cancer research is conducted in coordination with Mayo Clinic Comprehensive Cancer Center. Mayo Clinic Comprehensive Cancer Center receives funding from the National Cancer Institute and is designated as a comprehensive cancer center. This designation recognizes the institution's scientific excellence and multidisciplinary resources focused on cancer prevention, diagnosis and treatment.

Publications

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

Research Profiles

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View all physicians • Arizona

April 29, 2026
  1. Frank SJ, et al., eds. Principles of proton beam therapy. In: Proton Therapy. Elsevier; 2021. https://www.clinicalkey.com. Accessed June 3, 2025.
  2. Mitin T. Radiation therapy techniques in cancer treatment. https://www.uptodate.com/contents/search. Accessed June 3, 2025.
  3. Dmochowski RR, et al., eds. Radiation therapy for prostate cancer. In: Campbell-Walsh-Wein Urology. 13th ed. Elsevier; 2026. https://www.clinicalkey.com. Accessed June 3, 2025.
  4. Proton therapy. RadiologyInfo.org. https://www.radiologyinfo.org/en/info.cfm?pg=protonthera. Accessed June 3, 2025.
  5. DiBase SJ, et al. External beam radiation therapy for localized prostate cancer. https://www.uptodate.com/contents/search. Accessed June 3, 2025.
  6. Proton beam therapy. RT Answers. https://www.rtanswers.org/cancer-types/brain-tumors/treatment-types/proton-beam-therapy. Accessed June 3, 2025.
  7. What to expect. RT Answers. https://www.rtanswers.org/what-is-radiation-therapy/what-to-expect. Accessed June 3, 2025.
  8. External beam radiation therapy for cancer. National Cancer Institute. https://www.cancer.gov/about-cancer/treatment/types/radiation-therapy/external-beam. Accessed June 3, 2025.
  9. Find a proton therapy center near you. The National Association for Proton Therapy. https://proton-therapy.org/findacenter. Accessed June 3, 2025.
  10. Salem PP, et al. Proton radiation therapy: A systematic review of treatment-related side effects and toxicities. International Journal of Molecular Sciences. 2024; doi:10.3390/ijms252010969.
  11. Yang JT, et al. Randomized phase II trial of proton craniospinal irradiation versus photon involved-field radiotherapy for patients with solid tumor leptomeningeal metastasis. Journal of Clinical Oncology. 2022; doi:10.1200/JCO.22.01148.
  12. What is proton therapy? The National Association for Proton Therapy. https://proton-therapy.org/faq. Accessed March 25, 2026.
  13. Health Education & Content Services. An introduction to radiation treatment. Mayo Clinic; 2026.
  14. Medical review (expert opinion). Mayo Clinic. April 4, 2026.