Louis J. Mariorenzi, MD

Joint Replacement Surgery
Board-Certified Orthopedic Surgeon

It is with mixed emotions that I announce my retirement from orthopedic practice effective December 31, 2025. After dedicating over 40 years to the field and the community, it is time to embark on the next chapter of my life.

I would like to express my appreciation to the many patients who have entrusted me with their care. It has been an honor to care for you and your families, witness your resilience and be part of your journey to recovery.

Along my professional journey, I have had the privilege of working with exceptional colleagues and staff. Together we have built comprehensive services that will continue to provide the highest quality of care in the State.

As I transition into retirement, I am confident that the team at University Orthopedics will continue to provide exceptional care to you and your loved ones. Our subspecialty care team providing hip and knee arthroplasties include twelve highly skillful physicians including Michael C. Mariorenzi, MD. To schedule an appointment with Dr. Michael C. Mariorenzi, or to request a copy of your medical records, please call (401) 799-5012.

I am excited about the opportunities that lie ahead. Please accept my very best wishes for your continued health and happiness in the years ahead.

Sincerely,

Louis J. Mariorenzi, M.D.

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Dr. Louis J. Mariorenzi is a board-certified orthopedic surgeon who is fellowship-trained in the treatment of adult arthritis and joint replacement surgery. He obtained his medical degree at Brown University in Providence, RI. After general surgery training at St. Luke’s–Roosevelt Medical Center in New York, NY, he completed an orthopedic residency at Tufts–New England Medical Center in Boston, MA. Following orthopedic residency he sought fellowship training in adult hip and knee arthritis and joint replacement surgery at The Royal London Hospital Medical College in London, UK.

In 1987, Dr. Louis J. Mariorenzi returned home to RI to practice with his father A. Louis Mariorenzi MD and later his brother Michael P. Mariorenzi, MD. Dr. Mariorenzi has held numerous leadership positions on many boards and committees at St. Joseph Hospital-Our Lady of Fatima Hospital and Roger Williams Medical Center. He has been voted “Top Doc” in orthopedic surgery by his peers in Rhode Island Monthly magazine nearly every year since the initial publication in 1994. Away from the medicine, he enjoys hiking, sailing, skiing and mountaineering. He has successively climbed all “Seven Summits” including Mt. Everest.

Subspecialty:

• Joint Replacement Surgery

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