About Us

The Oregon Geriatrics Society (OGS) is a medical specialty society that focuses on education for health care professionals specializing in the care of older adults, and long-term care. OGS is an official member of the Council of State Affiliates of the national organization, American Geriatrics Society.

Officers & Executive Board Members

Officer Board Members

Officer – President
Preston Peterson, MD, FACP

Officer – Secretary
Mark Traines, MD, AGSF

Officer – Treasurer
David Hibbs, ARNP

Officer Board Members

Paula Folger, MD

Maggie George, MD

Page Jossi, MD

Lisa Miura, MD, FACP

Margaret Njonjo, MD

Darin Prulhiere, MD, MS, CMD

Lisa Sanders, MD

Executive Director
Mary A. Olhausen

Education Committee Chairman

Emily Morgan, MD
Julie Bernstein, PA-C, MPAS


Lisa Miura, MD, FACP


Diversity and Inclusion

The mission of the Oregon Geriatrics Society is to improve the health, independence, and quality of life for older adults in Oregon. We believe that equal protections and treatment are fundamental to aging wellness. OGS stands against systemic racism, discrimination, prejudice, harassment or violence towards anyone – regardless of age, race, cultural background, nationality, ethnic origin, disability, religion, immigration status, gender, gender identity or sexual orientation. As an organization representing professionals in the care of older adults, we stand against any discriminatory policies or actions. We envision and will strive for a nation where everyone is treated equally.