About us

OSI was formed to fill a need in the Immunology Community.  Our mission, is to provide independent physicians and group practices the best possible price for their infusion medications and provide value added services to benefit the membership.  The founders of OSI are intimately familiar with the challenges facing independent practitioners today.  Created based on their experience managing and supporting medical practices and independent pharmacies, the leadership team of OSI was able to create a GPO model that will benefit its members.

The Leadership of OSI:

Mark Murphy, MBA

With 20 years in the medical and pharmaceutical industry, Mark brings his strength and energy to OSI along with the discipline acquired in the US Navy.  During his tenure with Pfizer Pharmaceuticals, he acquired his MBA from the University of Louisville with an emphasis in entrepreneurship.  He left Pfizer to open two independent clinic based pharmacies.  Additionally, he has served as the practice administrator in one of Kentucky’s largest Rheumatology practices.  In this role, he successfully navigated the practice away from common pitfalls and quickly recognized the need for an infusion centric GPO.


Robert Warford, PharmD.

Robert has 15 years of Pharmacy Management and Clinical Coordination.     Robert has management experience dealing with cost containment, contracting, pharmacy benefit management, and health care solutions.   He also has specialized clinic experience in Diabetes, Immunology, and Anti-Coagulation.   He is a founding member and resides on the Board of Directors of KIPA (Kentucky Independent Pharmacy Alliance).   Robert works as Director of Operations for two independent pharmacies.   He is a graduate of Georgetown College where he received a degree in Political Science and Chemistry.  He received his Doctorate of Pharmacy at the University of Kentucky.