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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

Hospitals and Organizations

  • MidState Medical Center
  • Integrated Care Partners


The Rothman Institute of Thomas Jefferson Hospital ‐ Joint Replacement Surgery

Graduate School
Georgetown University ‐ Physiology & Biophysics

Pennsylvania Hospital

Medical School
University of Pennsylvania School of Medicine

University of Massachusetts Medical Center ‐ Orthopedic Surgery and Rehabilitation


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

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.