Dr. Gus Katsigiorgis, D.O.

Board-certified, New York orthopedic surgeon focused on helping you

Dr. Gus Katsigiorgis

Dr. Gus Katsigiorgis joined Island Musculoskeletal Care (IMC Bone Doc) in 2005. Dr. Katsigiorgis brings a wealth of information and experience to IMC Bone Doc. He’s also one of the most highly respected orthopedic surgeons in the greater New York City area, with multiple publications and over two decades of leadership in the orthopedic arena. In 2023, he was named Chair of Orthopedics at Mercy Hospital.

Discover what Dr. Katsigiorgis can do for you. Make an appointment right now. Dr. Katsigiorgis can examine you, evaluate your medical condition and explain the different treatment options available to you. Contact us online or call us.

Qualifications and Experience


Medical School - New York Institute of Technology, New York

College of Osteopathic Medicine, Doctor of Osteopathic Medicine

Peninsula Hospital Center, Residency in Orthopedic Surgery

Peninsula Hospital Center, Internship in Orthopedic Surgery

Hospital Affiliations

Franklin Hospital

Huntington Hospital

Long Island Jewish Medical Center

Mercy Medical Center

North Shore University Hospital

Southside Hospital

Plainview Hospital

Languages Spoken



Board Certifications

American Osteopathic Board of Orthopedic Surgery

Awards and Publications

Magna Cum Laude

In-Network Insurances


21st Century


View all


Orthopedic Surgeon

Professional Statement

Dr. Katsigiorgis was raised in Long Island, New York. He graduated from Long Island University, C.W. Post campus, part of the honors program with magna cum laude in biology. He then went to New York College of Osteopathic Medicine, where he graduated in the top 5 percent of his class. He was then chief intern at Peninsula Hospital Center from 2000- 2001. He did his orthopedic residency at Peninsular Hospital Consortium where he served as chief resident from 2004-5005. Dr. Katsigiorgis is a board-certified orthopedic surgeon who scored second place on the National Orthopedic Board Exam. He was appointed chief of orthopedics at LIJ North Shore University Hospital, Franklin Medical Center. In 2023, he was named Chair of Orthopedics at Mercy Hospital.

Dr. Katsigiorgis has a well-earned reputation for being an outstanding, New York orthopedic surgeon. He performs minimally invasive knee replacements, minimally invasive hip replacements, and is involved in performing shoulder replacement, including reversed total shoulder replacements. He performs arthroscopic sports surgery including anterior cruciate ligament reconstruction and sports shoulder injuries including rotator cuff repair and instability surgery. He has been a guest lecturer, helping to promote medical knowledge in the medical community and has been a guest lecturer at the Eastern Osteopathic Regional Convention for the past three years. He is involved in teaching residents to help provide them with the knowledge and skills necessary to become orthopedic surgeons. He is the associate director of residency training at Peninsula Hospital Medical Center where he helps train a residency of 26 residents. He was voted Teacher of the Year in 2008 and 2010.

Hospital affiliations include Long Island Jewish Medical Center and North Shore University Hospital in Manhasset, Mercy Medical Center and LIJ North Shore University Hospital at Franklin Medical Center. Contact us online or call us to schedule an appointment with Dr. Katsigiorgis today.