Ashlie A. Tronnes, MD - Physician and Surgeon, Maternal-Fetal Medicine, Portland, OR

Ashlie A. Tronnes, MD

Provider Bio

Ashlie Tronnes, MD, is a board-certified maternal-fetal medicine physician and surgeon at Northwest Perinatal Center in Portland, Oregon.

About the Provider

Dr. Tronnes values the opportunity to participate in care of her patients during pregnancy. Her priority is to ensure that her patients and their families have a complete understanding of their pregnancy and treatment options and use the information to make decisions that best fit their individual situation/family. She has a particular interest in maternal cardiac and pulmonary disease, genetic or inheritable disorders, preterm birth, and multiple gestations. Dr. Tronnes has published research on fetal brain development, the effects of inflammation on brain development and optimal timing of preterm labor interventions. 

Dr. Tronnes grew up in Salem, Oregon. She graduated with honors from Willamette University with her bachelor’s degree in biology and Spanish. She received her medical degree from Albany Medical College in New York. She completed her OB/GYN specialty training at OHSU, and her fellowship in maternal-fetal medicine at the University of Washington in Seattle. As a fellow, Dr. Tronnes led teams in the development of obstetric care guidelines for the university health system. She was also an acting OB/GYN instructor responsible for daily medical and surgical education of residents as part of patient care and weekly organized instruction.

Dr. Tronnes and her husband have a daughter. They enjoy hiking, going for walks and swimming, as well as spending time with their extended family now that they are settled back home in the Northwest. Her hobbies also include gardening and painting.


  • Maternal-Fetal Medicine, American Board of Obstetrics & Gynecology, 2017
  • Obstetrics and Gynecology, American Board of Obstetrics & Gynecology, 2013


  • Fellowship:

    Maternal Fetal Medicine, University of Washington Medical Center, 2015

  • Residency:

    OB/GYN, Oregon Health & Science University, 2012

  • Internship:

    OB/GYN, Women and infants Hospital, 2009

  • Medical School:

    Doctor of Medicine, Albany Medical College, 2008

  • Undergraduate Degree:

    Bachelor of Arts, Willamette University, 2002


  • Oregon Medical Association


  • Top Doctors and Nurses, Portland Monthly Magazine, 2021
  • Top Doctors and Nurses, Portland Monthly Magazine, 2019
  • Top Doctors and Nurses, Portland Monthly Magazine, 2018

Publications and Presentations

Recommendations for Genetic Screening in Pregnancy, Perinatal Progress, May 2019

Check Accepted

If you’re pregnant and want to begin care at WHA–or need to schedule an appointment during your pregnancy, call us! Find a provider and location here.

Please have your insurance information handy before you begin scheduling.

This will allow our teams to check whether your plan may require a referral for the care you need or to prepare benefits information to share with you at your visit. If you do not enter insurance information when scheduling, you may be asked to pay a $200-$500 deposit before receiving service.