Dr. Riley J. Williams III is an Orthopedic Surgeon and specialist in knee, shoulder and elbow surgery at Hospital for Special Surgery. Dr. Williams is the Knee Group Leader of the Sports Medicine & Shoulder Service at HSS.

Ms. Lefkowitz has been working in Private Practice in Sports Medicine alongside Dr. Riley Williams since 2007. She is involved in all aspects of patient care with in the practice. In her spare time, Melissa loves working out, exploring new restaurants and traveling.

Liliana began working for Dr. Williams in the beginning of 2018 and provides comprehensive care to their patients. Liliana provides wound care, pre and post-operative instruction/education, triage and post-operative follow up visit.