
Dr. Koo Featured in Top Doctors 2018 Article
Recent Posts

Shoulder Impingement: When Everyday Arm Movements Become Painful
Samuel S. Koo MD MPH
January 7, 2026

Labral Tears: A Hidden Cause of Shoulder Pain and Instability
Samuel S. Koo MD MPH
December 12, 2025

Understanding Frozen Shoulder: What to Know About Adhesive Capsulitis
Samuel S. Koo MD MPH
October 31, 2025