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KOL Pulse Rankings · 2026

Top Breast Cancer KOLs on X

The breast oncologists whose posts fellow physicians share, quote and discuss most in 2026.

US Top 30Global Top 30SABCS 2025 · ASCO · ESMO 2026Updated November 10, 2026

US Top 30

US-based physicians, ranked.

  1. 1
    PTPaolo Tarantino profile photo
    Paolo Tarantino
    MD, PhD, Medical Oncologist | Clinical Fellow @DanaFarber | @Harvard. Associate Editor @ESMO_Open. Interested in breast…
    189 physicians engaged454 physician engagements
  2. 2
    STSara Tolaney profile photo
    Sara Tolaney
    Chief, Division of Breast Oncology @DanaFarber Tennis fan Mother of two teenage girls
    107 physicians engaged253 physician engagements
  3. 3
    HRHope Rugo profile photo
    87 physicians engaged227 physician engagements
  4. 4
    OBOncology Brothers profile photo
    Oncology Brothers
    Practice changing discussions by community oncologists-Rohit Gosain @RoswellPark & Rahul Gosain @WilmotCancer.…
    143 physicians engaged259 physician engagements
  5. 5
    EHErika Hamilton, MD, FASCO profile photo
    Erika Hamilton, MD, FASCO
    Chief Development Officer & Director of Breast Cancer Research @ Sarah Cannon Research Institute| Wife | Mom| Tweets…
    87 physicians engaged175 physician engagements
  6. 6
    DSDr Sarah Sammons profile photo
    Dr Sarah Sammons
    Breast Medical Oncologist Clinical Trial Leader. University of Maryland, Greenebaum Cancer Center. Tweets= own opinion
    77 physicians engaged148 physician engagements
  7. 7
    SGStephanie Graff, MD, FACP, FASCO profile photo
    Stephanie Graff, MD, FACP, FASCO
    Director Breast Oncology, Brown University Health | Assoc Prof Legorreta Cancer Center Brown Univ | Views Mine…
    73 physicians engaged122 physician engagements
  8. 8
    AMAya Mohamed | MSc, MD profile photo
    Aya Mohamed | MSc, MD 🎗
    MD,MSc (@Harvard)🎗Medical Oncologist | Breast CA Specialist & Researcher 🧬 | 🇺🇸🇪🇺 Board Certified — Assoc Lecturer in…
    30 physicians engaged70 physician engagements
  9. 9
    ASAbi Siva MD profile photo
    Abi Siva MD
    Breast oncologist and researcher, Director of Medical Oncology, Fellowship PD, #MUSCHollings, #bcsm, Mom to 2 lovely…
    36 physicians engaged66 physician engagements
  10. 10
    MBMali Barbi, MD MSc | Breast & Gyn Oncologist profile photo
    Mali Barbi, MD MSc | Breast & Gyn Oncologist
    Gyn & Breast Onc. @NorthwellHealth Cancer Institute @CSHL. Leading the transition to molecular-first care. Enough…
    26 physicians engaged36 physician engagements
  11. 11
    YAYara Abdou, MD, MSCR profile photo
    Yara Abdou, MD, MSCR
    Breast Medical Oncologist | Clinical Trialist and Researcher @UNC_Lineberger | Views are my own.
    24 physicians engaged30 physician engagements
  12. 12
    HJHarold J. Burstein, MD, PhD, FASCO profile photo
    Harold J. Burstein, MD, PhD, FASCO
    Breast cancer specialist @DanaFarber Cancer Institute & faculty associate dean of admissions @HarvardMed. Tweets are my…
    22 physicians engaged27 physician engagements
  13. 13
    JAJason A. Mouabbi MD profile photo
    Jason A. Mouabbi MD
    Breast Medical Oncologist @mdandersonnews | Lobular Specialist | Lead of #ILC Working Group | co-Lead of HR+ Working…
    22 physicians engaged22 physician engagements
  14. 14
    EMErica Mayer profile photo
    Erica Mayer
    Institute Physician, Susan F. Smith Breast Oncology Center, @danafarber. Tweets are my own not medical advice.
    14 physicians engaged22 physician engagements
  15. 15
    VKVIRGINIA KAKLAMANI profile photo
    VIRGINIA KAKLAMANI
    Oncologist and tennis player
    13 physicians engaged14 physician engagements
  16. 16
    ISIlana Schlam profile photo
    Ilana Schlam
    Breast medical oncologist @DanaFarber @DFCI_breastonc | Tweets are my own
    13 physicians engaged13 physician engagements
  17. 17
    KKKevin Kalinsky, MD, MS, FASCO profile photo
    Kevin Kalinsky, MD, MS, FASCO
    Division Director of Medical Oncology at Winship/Director Glenn Family Breast Center/Opinions=my own
    11 physicians engaged13 physician engagements
  18. 18
    KJKomal Jhaveri, MD, FACP, FASCO profile photo
    Komal Jhaveri, MD, FACP, FASCO
    Patricia and James Cayne Chair for Junior Faculty, Co-Chair Theranostics TACTIC Program, Section Head, Endocrine…
    9 physicians engaged12 physician engagements
  19. 19
    RSRebecca Shatsky, MD profile photo
    Rebecca Shatsky, MD
    Professor of Medicine. Breast medical oncology team leader @UCSD specializing in young patients, TNBC, Lobular…
    11 physicians engaged14 physician engagements
  20. 20
    SPSarah Premji, MD profile photo
    Sarah Premji, MD
    Assistant Director Breast Cancer at Sarah Cannon Research Institute, Medical Oncologist at SCRI Oncology Partners
    9 physicians engaged13 physician engagements
  21. 21
    AGAntonio Giordano, MD PhD profile photo
    Antonio Giordano, MD PhD
    Breast Medical Oncologist @harvardmed @DanaFarber driven by passion for research, drug development, and taking care of…
    6 physicians engaged6 physician engagements
  22. 22
    CVCarmine Valenza profile photo
    Carmine Valenza
    MD MPH PhD(c) - Research Fellow in Oncology (@DFCI_BreastOnc, @harvardmed, @IEOufficiale and @LaStatale), from Milan to…
    7 physicians engaged7 physician engagements
  23. 23
    GNGuilherme Nader Marta profile photo
    Guilherme Nader Marta
    Medical Oncologist, Clinical Fellow @DanaFarber | @Harvard | Interested in breast cancer and cancer research
    5 physicians engaged5 physician engagements
  24. 24
    NTNaoto T Ueno, MD, PhD profile photo
    Naoto T Ueno, MD, PhD
    Director, NCI-designated University of Hawai’i Cancer Center @UHCancerCenter, Breast Med Onc. Cancer Survivor.…
    3 physicians engaged4 physician engagements
  25. 25
    JAJame Abraham, MD, FACP profile photo
    Jame Abraham, MD, FACP
    Prof & Enterprise Chair Dept. of Heme & Oncology @ClevelandClinic @NRGonc Deputy Editor @ASCOPost & @JCOOP_ASCO Tweets…
    5 physicians engaged5 physician engagements
  26. 26
    ALAlexis LeVee, MD profile photo
    Alexis LeVee, MD
    Breast medical oncologist and researcher @UCLA | Views my own
    5 physicians engaged5 physician engagements
  27. 27
    LHLaura Huppert, MD profile photo
    Laura Huppert, MD
    Breast oncologist @UCSF | Interested in breast cancer clinical/translational research, med ed | Author of Huppert’s…
    4 physicians engaged6 physician engagements
  28. 28
    BTBijoy Telivala profile photo
    Bijoy Telivala
    Partner physician at CSNF , Jacksonville. All views are my own . Not medical advice Cricket/Pickleball/Bridge/Coffee/…
    4 physicians engaged8 physician engagements
  29. 29
    SASanthosh Ambika profile photo
    Santhosh Ambika
    Oncologist/Hematologist- Doing my part to help onc patients. + fintwit
    4 physicians engaged5 physician engagements
  30. 30
    VSVivek Subbiah, MD profile photo
    Vivek Subbiah, MD
    Drug Development| Precision Oncology| Tissue-Agnostic Precision Medicine #Oncologist, #Phase1trials…
    6 physicians engaged6 physician engagements
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KOL Pulse analysis · Updated November 10, 2026

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