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Kathryn J. Ruddy, M.D.

  1. Oncologist
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Departments

Specialty Groups

Location

  1. Rochester, Minnesota

Languages

English

Existing patients

Kathryn J. Ruddy, M.D., M.P.H., FASCO, is a medical oncologist who sees patients with breast cancer. She has particular expertise in:

  • Premenopausal breast cancer
  • Male breast cancer
  • Survivorship issues
  • Management of side effects of treatment including cardiotoxicity

In addition to her clinical activities, Dr. Ruddy leads the Mayo Clinic Comprehensive Cancer Center Cancer Prevention, Control and Survivorship Program, and is active in research focused on prediction and prevention of toxicity in patients with cancer.

Within the Alliance for Clinical Trials in Oncology, she co-chairs the Symptom Intervention Committee, supporting survivorship research nationally. In 2025, she was inducted into the American Society of Clinical Investigators in recognition of her excellence in clinical research.

Dr. Ruddy mentors residents and fellows, speaks at national meetings, and publishes in high-impact scientific journals.

  1. Breast cancer
  2. Male breast cancer
  1. Cancer survivorship program
  2. Cancer treatment
  • Breast cancer
  • Cancer survivorship
  • Long-term and late toxicities of cancer therapy (including infertility)
  • Breast cancer in young women
  • Breast cancer in men
  1. 2009
    Fellow - Medical Oncology and HematologyDana-Farber Cancer Institute
  2. 2008
    MPH - Clinical EffectivenessHarvard School of Public Health
  3. 2006
    Resident - Internal MedicineMassachusetts General Hospital
  4. 2003
    MD - MedicineUniversity of Pennsylvania
  5. 1999
    AB - Summa Cum Laude, Psychology and Biology(cognitive neuroscience)Harvard College

Certifications

  1. 2009
    Medical OncologyAmerican Board of Internal Medicine

Awards and honors

  1. 2025
    Award of ExcellenceMayo Clinic Comprehensive Cancer Center
  2. 2025
    MC-AIR Seedling Awards: PrecureMayo Clinic
  3. 2024
    Fellows of the American Society of Clinical OncologyAmerican Society of Clinical Oncology
  4. 2012
    Physician of the YearCancerCare
  5. 2003
    Alpha Omega AlphaUniversity of Pennsylvania School of Medicine
  6. 1999
    Gamble ScholarUniversity of Pennsylvania School of Medicine (merit-based full scholarship)
  7. 1998
    Phi Beta KappaHarvard College

Professional memberships

  1. 2026
    ReviewerMayo Clinic Ovarian SPORE pilot projects
  2. 2026 - 2027
    Symptom Science and Palliative Care Track LeaderAmerican Society of Clinical Oncology
  3. 2026
    Grant Reviewer: MCCCC/Cancer Research-Karolinska Institutet cancer research project proposalMayo Clinic Comprehensive Cancer Center
  4. 2026
    Grant Reviewer: 2026 Mayo Clinic Comprehensive Cancer Center Spring RFA applicationsMayo Clinic Comprehensive Cancer Center
  5. 2026 - present
    Abstract ReviewerMayo Clinic Comprehensive Cancer Center Pew-Stewart Scholars for Cancer Research
  6. 2026
    Scientific Grant Reviewer of the Young Investigator Award in Survivorship Research for Conquer CancerAmerican Society of Clinical Oncology
  7. 2026 - present
    Co - ChairNCI SxQOL Steering Committee
  8. 2026 - present
    Co-ChairSymptom Management and Health-Related Quality of Life Steering Committee
  9. 2025 - present
    Patient Information Advisory Committee MemberAmerican Society of Clinical Oncology
  10. 2025 - present
    Co-DirectorMayo Clinic
  11. 2025 - present
    Oncology Research Retreat Planning CommitteeDepartment of Oncology
  12. 2025 - present
    MemberThe American Society for Clinical Investigation
  13. 2025 - present
    K2R Grant ReviewerNational Institutes of Health
  14. 2024 - present
    Grant Review CommitteeDepartment of Oncology
  15. 2024 - present
    Grant ReviewerMayo Clinic Comprehensive Cancer Center
  16. 2024 - 2025
    Abstract ReviewerMASCC/ISOO 2025
  17. 2024 - present
    2025 ACC Cardio-Oncology Planning CommitteeAmerican College of Cardiology
  18. 2024 - present
    Minnesota Interview Committee Co-ChairHarvard College
  19. 2023 - 2024
    Moonshot Scholars Diversity Program ReviewNCI Special Emphasis Panel
  20. 2023 - present
    Workgroup MemberAmerican Cancer Society, National Breast Cancer Roundtable, Access to Treatment Workgroup
  21. 2023
    Grant Review Panel MemberNCI Cancer Moonshot Scholars Diversity Program
  22. 2023 - present
    Associate Chair of Healthcare Delivery, Supportive care, and Health Disparities Research ChairExecutive Committee, Department of Oncology
  23. 2022 - present
    Member and ReviewerKL2 Scientific Review Committee
  24. 2022 - present
    Annual Meeting Education Committee MemberAmerican Society of Clinical Oncology
  25. 2022 - present
    site PITranslational Breast Cancer Research Consortium (TBCRC)
  26. 2022 - 2025
    Health Services Research and Quality Improvement trackASCO Annual Meeting Education Committee
  27. 2022 - 2023
    Equity Scorecard Task ForceAmerican Society of Clinical Oncology
  28. 2022 - present
    Leader of Survivorship/Surveillance Subgroup of MCCC Practice IntegrationMayo Clinic Cancer Center
  29. 2021
    Academic PanelistCardiology Oncology Innovation Network (COIN)
  30. 2021
    R21/R03 Grant ReviewerNational Institutes of Health
  31. 2021 - present
    Member, Women's Cancer ProgramMayo Clinic Cancer Center
  32. 2021
    ChairPatient and Community Education Subcommittee, Mayo Clinic Cancer Center
  33. 2021 - 2024
    Health Equity and Outcomes Committee MemberAmerican Society of Clinical Oncology
  34. 2021 - present
    MemberMinnesota Society of Clinical Oncology (MSCO)
  35. 2021
    Session ChairCharité Mayo Conference
  36. 2021 - present
    MemberAmerican Society of Preventative Oncology
  37. 2021 - present
    Special expertNCI Breast Cancer Steering Committee
  38. 2021 - present
    MemberAmerican College of Cardiology
  39. 2021 - present
    Co-ChairAlliance for Clinical Trials in Oncology
  40. 2020 - present
    MCCC Transformation Workstream MemberMayo Clinic Cancer Center
  41. 2020 - present
    MemberAmerican Association for Cancer Research
  42. 2020 - present
    LeaderCancer Patient Education Center Internal Advisory Group
  43. 2020 - 2022
    Vice Chair of Neuro complications committeeMultinational Association of Supportive Care in Cancer
  44. 2020 - 2023
    Cancer Survivorship Committee MemberAmerican Society of Clinical Oncology
  45. 2020 - present
    Breast Cancer Advisory Group MemberAmerican Society of Clinical Oncology
  46. 2020 - 2021
    MemberMayo Clinic International
  47. 2020 - present
    MemberMoonshot Team
  48. 2020 - present
    Co-LeaderPopulation Sciences Program, Mayo Clinic Cancer Center
  49. 2020 - present
    Search Committee Member of Population Science ProgramMayo Clinic Cancer Center
  50. 2019
    Expert PanelistSan Antonio Breast Cancer Symposium (SABCS)
  51. 2019 - 2020
    Leadership Development Program MemberAmerican Society of Clinical Oncology
  52. 2019 - present
    LeaderMayo Clinic Breast eTumor Board
  53. 2018
    MentorSan Antonio Breast Cancer Symposium (SABCS)
  54. 2018 - 2020
    Expert PanelistAmerican Society of Clinical Oncology
  55. 2018 - present
    ChairBreast eTumor, Mayo Clinic eBoard
  56. 2017
    Expert PanelistFood and Drug Administration (FDA)
  57. 2017 - 2019
    MemberPatient Engagement Workgroup, Mayo Clinic Cancer Center
  58. 2017
    Co-LeaderCancer Control Disease-Oriented Group
  59. 2017 - present
    Leader of Symptom Control and Survivorship Cross-Disciplinary GroupMayo Clinic Cancer Center
  60. 2016
    MentorSan Antonio Breast Cancer Symposium (SABCS)
  61. 2016 - present
    Member Education Committee/IMP Education CommitteeMayo Clinic Cancer Center
  62. 2016 - present
    Invited MemberYoung Survival Coalition
  63. 2016 - 2020
    LeadTranslational Breast Cancer Research Consortium (TBCRC)
  64. 2016 - 2017
    MemberMinnesota Cancer Alliance
  65. 2016 - 2018
    MemberDepartment of Medical Oncology
  66. 2016 - 2017
    Co-LeaderSurvivorship Standards Council, Mayo Clinic Cancer Center
  67. 2016 - present
    Co-LeaderQuestionnaires and Patient Reported Outcomes (Q-PRO) Working Group, Department of Oncology
  68. 2015 - present
    Advisory Panel MemberPsychosocial Oncology, Cancer.net, American Society of Clinical Oncology
  69. 2015
    Program DirectorCardio-Oncology Program
  70. 2015
    Co-authorBreast Specialty Council Workgroup
  71. 2015 - 2025
    Advisory PanelistPsychosocial Oncology
  72. 2015 - 2017
    ChairAmerican Society of Clinical Oncology
  73. 2015 - 2016
    MemberCenter for the Science of Health Care Delivery
  74. 2014 - present
    MemberMultinational Association of Supportive Care in Cancer
  75. 2014 - 2022
    MemberNational Comprehensive Cancer Network
  76. 2014 - 2021
    Vice ChairAlliance, Symptom Intervention Committee
  77. 2014 - present
    MemberAmerican College of Surgeons
  78. 2013 - 2016
    MemberCancer Control Disease-Oriented Group
  79. 2013 - present
    Executive Committee MemberBreast Disease Registry
  80. 2013 - present
    InterviewerDepartment of Internal Medicine
  81. 2013 - present
    InterviewerHarvard College
  82. 2013 - present
    Co-ChairEORTC 10085 Male Breast Cancer QoL Working Group
  83. 2013 - present
    MemberAmerican Medical Women's Association
  84. 2013 - present
    MemberAmerican Society of Breast Disease
  85. 2012
    Project OfficerBrigham and Women's Hospital
  86. 2011 - 2015
    MemberAlliance, Committee on Advocacy Research Communications, Ethics and Disparities (CARE)
  87. 2011 - 2013
    ASCO RepresentativeAmerican Society of Plastic Surgeons
  88. 2011
    FacilitatorBrigham and Women's Hospital
  89. 2011
    RepresentativeAmerican Association for Cancer Research & American Society of Clinical Oncology
  90. 2010 - 2013
    MemberCancer and Leukemia Group B Foundation
  91. 2007 - present
    MemberAmerican Society of Clinical Oncology
  92. 2006 - 2010
    MemberMassachusetts Medical Society
  93. 2005 - 2006
    MemberEducation at MGH(ECOTE), Massachusetts General Hospital
  94. 2004 - 2005
    MemberEducation at MGH(ECOTE), Massachusetts General Hospital

Publications

Research activities

See a description of research activities.