The American Physician Scientists Association was founded in 2003 by trainees, for trainees. From its roots as a small group of students, APSA has grown into an organization of over one thousand members. APSA continues to be trainee-led, and is the premier organization for physician-scientist trainee advocacy. APSA's efforts today include partnerships with numerous specialty societies, advocacy at the local and national level, and numerous unique benefits, including mentorship opportunities and special awards from partner societies, exclusively for APSA members. Learn more about the history of APSA below. If you are not already an APSA member, today is the day to join and become part of the ongoing APSA story!