McCallum, John D., MD

Medical Director, Connecticut Orthopaedic Institute at MidState Medical Center





Providing the best care to our patients and their companions requires communicating in a way everyone understands. Interpreter services are available 24 hours a day, 7 days a week, 365 days a year. All spoken languages are available, as well as American Sign Language (AS/L).

Accepting New Patients
  • Orthopedic Surgery
  • Joint Replacement Surgery
  • Upper Extremity Surgery

Areas of Expertise
Arthritis, Arthroscopic Surgery, Hand and Upper Extremity Surgery, Hip Surgery, Knee Reconstruction, Knee Surgery, Limb Salvage, Minimally Invasive Surgery, Sports Injuries


The Rothman Institute of Thomas Jefferson Hospital

Graduate School
Georgetown University

Pennsylvania Hospital

Medical School
University of Pennsylvania School of Medicine

University of Massachusetts Medical Center

Professional Organizations

  • American Medical Association, Member
  • Connecticut Medical Society, Member
  • New Haven County Medical Society, Member
  • Milford County Medical Society, Member
  • Connecticut State Orthopaedic Society, Member
  • American Academy of Orthopaedic Surgeons, Fellow
  • Yale Orthopaedic Association, Member
  • American Association of Hip and Knee Surgeons, Fellow


John D. McCallum, III joined Connecticut Orthopaedic Specialists, P.C. in 1995 after completing a fellowship in joint replacement surgery at the Rothman Institute of Thomas Jefferson Hospital in Philadelphia. The Rothman Institute is considered one of the nation's leading training programs in joint reconstruction.

A graduate of Dartmouth College and the University of Pennsylvania School of Medicine, Dr. McCallum completed a surgical internship at Pennsylvania Hospital in Philadelphia. He completed his residency in Orthopaedic Surgery and Rehabilitation at the University of Massachusetts Medical Center in Worcester, Massachusetts. He served as Chief Resident at UMMC from 1993-1994. He also earned a Master's degree in physiology and biophysics from Georgetown University.

Currently a clinical instructor at Yale University School of Medicine, he is also an attending physician at the Hospital of Saint Raphael. Dr. McCallum has written a number of articles in orthopaedic journals and has presented orthopaedic grand rounds at Yale-New Haven and Thomas Jefferson Hospitals. He has been on the faculty of multiple national hip and knee reconstruction meetings and a presenter at the annual meeting of the American Academy of Orthopaedic Surgery.

Dr. McCallum, a board certified orthopaedic surgeon is a member of the American Medical Association, the Connecticut State, New Haven County, and Milford Medical Societies. He is also a member of the Connecticut State Orthopaedic Society, Yale Orthopaedic Association, a fellow of the American Academy of Orthopaedic Surgery and the American Association of Hip and Knee Surgeons.

Dr. McCallum specializes in hip and knee problems including arthritic and sports related injuries. He has been an innovator of hip and knee arthroscopic surgery, salvage and reconstructive techniques, including minimally invasive treatments.

He lives with his wife and two children in Guilford, CT. Besides his family, his interests include cycling, sailing, skiing, woodworking and car restoration.



Aetna, Anthem, BCBS Medicare, CarePartners of Connecticut, Cigna Healthcare, Colonial Cooperative Care, Community Health Network of Connecticut, Inc., Connecticare, Connecticare Commercial, Connecticare Medicare, Corvel, Coventry, Essence Healthcare, Evercare, First Health Group Corp., Focus, Harvard Pilgrim, Health Connecticut, Health Direct, Health New England, Healthy Connecticut, Multiplan, Northeast Health Direct, One Health Plan/ Great-West Healthcare, Oxford Health Plans, Prime Health Services, Private Health Care Systems, Inc., Senior Whole Health, United Healthcare, WellCare of Connecticut, Inc.

This information is subject to change at any time. Please check with your insurance provider before scheduling your appointment or receiving services to confirm they are a participating member of the Hartford HealthCare network.