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C. Ronald MacKenzie, MD

Rheumatology, Internal Medicine, Perioperative Medicine
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Dr. MacKenzie headshot

C. Ronald MacKenzie, MD

Rheumatology, Internal Medicine, Perioperative Medicine
Phone Icon Image
Hospital for Special Surgery
535 East 70th Street
New York, NY 10021

Tel: 212.606.1669
Fax: 212.774.2229
Hospital for Special Surgery
535 East 70th Street
New York, NY 10021

Tel: 212.606.1669
Fax: 212.774.2229

Dr. C. Ronald MacKenzie is an attending physician at Hospital for Special Surgery and Professor of Clinical Medicine and Medical Ethics at Weill Cornell Medical College.  Recently named The C. Ronald MacKenzie Chair in Ethics and Medicine at Hospital for Special Surgery, he has practiced rheumatology, general internal medicine and has provided perioperative care at this institution and NewYork-Presbyterian Hospital for the last 30 years.

Originally from Canada, he received his Bachelor of Science at the University of Western Ontario and his medical degree from the University of Calgary. He was trained in Winnipeg and New York at NewYork-Presbyterian Hospital (Cornell) and Hospital for Special Surgery. He subsequently joined the medical staff of these institutions later adding an appointment at Memorial Sloan Kettering Cancer Center where he is a consulting physician (Rheumatology). With his selection as faculty scholar in the Ethics Division at NewYork-Presbyterian Hospital (02-04), he began his formal training in medical ethics, an interest culminating in the above mentioned Chair as well as his appointment to the Ethics and Conflict of Interest Committee of the American College of Rheumatology, his primary professional association, chairing the committee from 2010-2013. 

Dr. MacKenzie’s interest in the intersection between medicine and the humanities is demonstrated through a number of activities. He is a member of the American Osler Society, an organization devoted to the history of medicine with particular reference to life and enduring contributions of William Osler as well as the Charaka Club, an organization founded in 1898 by physicians with a shared interest in the historical and literary aspects of medicine. In addition he is serves on the Editorial Board of The Pharos, the journal of the Alpha Omega Alpha Honor Medical Society, an organization whose focus is the promotion of humanism through gifted teaching, leadership development and service to others. 

In addition to these professional responsibilities, Dr. MacKenzie has served on the Board of the Health Care Chaplaincy of New York, an organization devoted to the spiritual support of people coping with the distress and suffering of severe illness. He is a long-standing member of the Board of Trustees of The Osborn, a senior living facility in Rye, NY where he lives with his wife with whom he has raised four children. In 2014 he joined the Board of the Newport Festival Foundation, a non-profit organization devoted to the promotion of America’s music and the famed Newport Jazz and Folk Festivals. He was also appointed to the medical staff of the New York Rangers of the National Hockey League. In his spare time Dr. MacKenzie is a musician (clarinetist) with the Westchester Symphonic Winds. In his nearly 25-year association with this organization he has performed at Avery Fisher Hall and the Caramoor Music Festival. He holds dual citizenship in the United States and Canada.

Dr. MacKenzie regularly lectures on matters pertaining to the rheumatic diseases, medical ethics and medicine in general. He has published numerous peer reviewed articles, abstracts, and book chapters. His book, entitled The Perioperative Care of the Orthopedic Patient, was published in 2014.

Patient Stories


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


Specialized Centers

Special Expertise

General internal medicine
Perioperative medicine
Medical ethics


Castle Connolly Top Doctors in New York Metro Area, 2002-2021
New York Magazine Top Doctors, 2002, 2017, 2018, 2021


Fellow, Royal College of Physicians and Surgeons of Canada, 1981-present
Fellow, American College of Rheumatology, 1991-present
Fellow, American College of Physicians, 1992-present
Fellow, New York Academy of Medicine, 2003-present
Member, American Olser Society, 2014-present

Non-Institutional Affiliations

Board of Trustees, The Osborn Home, 1999-present
Board of Directors, Sterline Home Care, Inc., 2000-present
Board of Trustees, The Health Care Chaplaincy, 2008-2010
Newport Festival Foundation, 2014-present



Insurance Information

Please do not hesitate to contact our office if you have questions regarding your insurance coverage. You may have coverage subject to the availability of 'out-of-network' benefits.

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Industry Relationships

One of the goals of HSS is to advance the science of orthopedic surgery, rheumatology, and related disciplines for the benefit of patients. Physicians at HSS may collaborate with outside companies for education, research and medical advances. HSS supports this collaboration in order to foster medical breakthroughs; however HSS also believes that these collaborations must be disclosed.

As part of the disclosure process, this website lists physician collaborations with outside companies. The disclosures are provided by information provided by the physician and other sources and are updated regularly. Further information may be available on individual company websites.

Below are the healthcare industry relationships reported by Dr. MacKenzie as of December 16, 2019.

  • Armada Health Care, LLC - Consultant
  • The Osborn (Continuing Care Retirement Community) - Board of Trustees

By disclosing the collaborations of HSS physicians with industry on this website, HSS and its physicians make this information available to their patients and the public, thus creating a transparent environment for those who are interested in this information. Further, the HSS Conflicts of Interest Policy does not permit physicians to collect royalties on products developed by him/her that are used on patients at HSS.

Patients should feel free to ask their HSS physicians questions about these relationships.


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

Patient Education by on HSS.edu

Editorial Appointments

Deputy Editor, HSS Journal, 2005-2012
Editorial Board, The Pharos of Alpha Omega Alpha Honor Medical Society, 2015

Selected Publications

MacKenzie CR, Kitsis EA, Meltzer M, Mancuso CA. Ethical Challenges in Rheumatology: A Survey of the American College of Rheumatology Membership. Arthritis & Rheum 2013

Mackenzie CR and I de Melo-Martin. Ethical Considerations in Chronic Disease. In: Ethical Challenges in Musculoskeletal Medicine. Ed: MacKenzie CR and I de Melo-Martin. 2015.

MacKenzie CR. Gout and Hyperuricemia: A Historical Perspective. Current Treatment Options in Rheumatology. 2015

For more publications, please see the PubMed listing.