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About OAOS

Executive Board:


President
Elizabeth Lieberman, MD

Vice President
Craig Gillis, DO

Secretary
Sudeep Taksali, MD

Treasurer
Graham DeKeyser, MD

Past President
Kathryn Schabel, MD

AAOS BOC Representatives
Elizabeth Lieberman, MD
Tamara Simpson, MD

Directors:


Justin Brohard, DO
Andrew Bryan, MD
Andrea Herzka, MD
Connor King, MD
Cay Mierisch, MD
Mark Mildren, MD
Emily Nguyen, MD
Blake Nonweiler, MD
Robert Orfaly, MD
Robert Sandmeier, MD
Tamara Simpson, MD
Kimberly Workman, MD
Natalie Zusman, MD


Staff


Amanda Dalton, Executive Director & Lobbyist
Sabrina Riggs, Senior Legislative Advocate
Shelley Shirley, Member Services and CME Coordinator

Upcoming Events

2026 OAOS Annual Orthopaedic Conference

September 25-26, 2026

Best Western Plus Hood River Inn
1108 E Marina Way,
Hood River, Oregon 97031

Book Now
  • 417 2nd Street
    Lake Oswego, OR 97034
  • 503-303-5071