Jennifer Tonneson, M.D., FACS

  • Assistant Professor of Surgery, Division of Surgical Oncology, School of Medicine


Dr. Tonneson is a surgeon who specializes in benign and malignant breast disease. After completing residency, she served on active duty in the U.S. Air Force as a general surgeon and was stationed in the U.S. and overseas. She then decided to go back to fellowship to pursue her true passion and specialize in breast surgical oncology. She enjoys taking care of her patients and guiding them through their cancer diagnoses with the ultimate goal of getting them back to doing the things that they love.

In her spare time, Dr. Tonneson enjoys being outdoors and spending time in nature. She especially likes hiking with her dog, Chase, who has been with her since residency. Other hobbies include landscape photography and sports of any kind. She loves traveling and experiencing new cultures and is excited to see what life in the Pacific Northwest brings.

Education and training

    • B.A., 2006, Dartmouth College
    • M.D., 2011, Dartmouth Medical School
  • Residency

    • General Surgery Residency, Dartmouth-Hitchcock Medical Center, Lebanon, NH, 2016
  • Fellowship

    • Breast Surgical Oncology, Mayo Clinic, Rochester, MN, 2021
  • Certifications

    • Board Certification in General Surgery, American Board of Surgery (ABS)
    • Advance Cardiac Life Support (ACLS)
    • Basic Life Support (BLS)

Memberships and associations:

  • American Society of Breast Surgeons (ASBrS), Member
  • Society of Surgical Oncology (SSO), Candidate Member
  • American College of Surgeons (ACS), Fellow
  • Excelsior Surgical Society
  • OHSU Member


Elsevier pure profile

Selected publications

  • Tonneson, J., Boughey, JB.  “Breast Cancer in Young Women.” In Chu, Q et al A Practical Guide to Managing Breast Cancer for Low-Middle Income Countries.  American College of Surgeons.  Chapter submitted and pending publication.
  • Linshaw, D., Tonneson, J. Rosenkranz, K. Surgical Therapy for Women with Multiple Synchronous Ipsilateral Breast Cancer (MIBC): Current Evidence to Guide Clinical Practice. Curr Breast Cancer Rep (2019) 11: 67.
  • Louie RJ, Tonneson JE, Gowarty M, Goodney PP, Barth, RJ Jr, Rosenkranz M.  Complete blood counts, liver function tests, and chest x-rays as routine screening in early-stage breast cancer: value added or just cost?  Breast Cancer Research Treatment, 2015 Nov; 154(1):99-103.
  • Davidson A, Edgar L, Tonneson JE, Buckey J.   Free-Floating Resistance Exercises for Maintaining Postural Muscles in Weightlessness:  A Re-flight and Enhancement of the 2004 Study.  NASA’s C-9 and Other Microgravity Simulations Summary Report, 2006 Sept; 52-56.
  • Tonneson JE, Boughey JC. ASO Author Reflections: De-escalating Axillary Management in Women Over 70 with Hormone Receptor Positive Disease. Ann Surg Oncol. 2021 Jul 21. doi: 10.1245/s10434-021-10492-2. Epub ahead of print. PMID: 34291380.
  • Tonneson, JE, Hoskin TL, Durgan DM, et al. Decreasing the Use of Sentinel Lymph Node Surgery in Women over 70 Years Old with Hormone Receptor Positive Breast Cancer and the Impact on Adjuvant Radiation and Hormone Therapy. Annals of Surgical Oncology. 2021. Jul 13. doi: 10.1245/s10434-021-10407-1. Epub ahead of print. PMID: 34258721.


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