C. Ronald MacKenzie, MD

Ronald MacKenzie is Attending Physician at Hospital for Special Surgery and Director of Perioperative Medicine with the HSS Spine Care Institute.  He is also Chair of the American College of Rheumatology Ethics and Conflicts of Interest Committee.

Dr. MacKenzie's interest in bioethics grew out of a melding of his former role as Chairman of the HSS Institutional Review Board and his affinity for the humanistic aspects of medical practice. Over the years he has had the opportunity to explore a range of subjects relevant to medical ethics, including an appointment as a Faculty Scholar in the Ethics Division of Weill Cornell.

Dr. MacKenzie has written a number of papers pertaining to a range of ethical issues, including medical professionalism, justice in the rheumatic diseases, informed consent, and conflict of interest. In addition, he has contributed chapters on ethics of clinical research for a number of major textbooks in rheumatology, and is responsible for the creation of Ethics Forum, a quarterly column in The Rheumatologist journal which features analysis and commentary on ethically challenging cases solicited from the practicing rheumatologic community.

It is Dr. MacKenzie’s vision that HSS continue to expand its national influence in rheumatology while establishing an important role in shaping ethical standards for medical research and practice.


Attending Physician, Hospital for Special Surgery
Professor of Clinical Medicine, Weill Cornell Medical College
Professor of Clinical Public Health, Weill Cornell Medical College
Co-Medical Director, Center for Brachial Plexus and Traumatic Nerve Injury
Non-Operative Director, Spine Care Institute


Specialized Centers


MD, University of Calgary, Calgary, Alberta, Canada 1977


Family Medicine, Calgary General Hospital, Alberta, Canada
Internal Medicine, University of Manitoba Affiliated Hospitals, Winnipeg, Manitoba, Canada


  • Fellow, Royal College of Physicians and Surgeons of Canada
  • Fellow, American College of Rheumatology
  • Fellow, New York Academy of Medicine


Internal Medicine

State Licensure

New York
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Dr. C. Ronald MacKenzie, Rheumatologist, Internist

Contact Information

Office Locations

Hospital for Special Surgery
535 East 70th Street
New York, NY 10021

Tel: 212.606.1669
Fax: 212.774.2229

Mailing Address

Hospital for Special Surgery
535 East 70th Street
New York, New York 10021

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