The reviews listed below were collected independently of Princeton Orthopaedic Associates through rater8. Each review represents an authentic and verified patient experience.
Outstanding doctor
(3 days ago)
Nov-2025
Explained clearly and answered my questions.
(4 days ago)
Nov-2025
Knowledgeable, professional and has an uncanny ability to explain things in layman’s terms. What a great experience.
(5 days ago)
Nov-2025
I can’t say enough good things about Dr. Grenis! He is knowledgeable, kind and caring. I have had a great experience from surgery to recovery. Highly recommend this doctor for any kind of hand injury.
(1 week ago)
Nov-2025
Very thorough
(2 weeks ago)
Nov-2025
Very kind and took his time to explain everything
(2 weeks ago)
Nov-2025
Very satisfied
(3 weeks ago)
Nov-2025
Such a warm and caring doc, very knowledgeable.
(3 weeks ago)
Nov-2025
Took his time to explain cause and options in a comforting manner
(3 weeks ago)
Nov-2025
Dr. Grenis was professional and explained the injury and what my son's choices are. Dr. Grenis answered all our questions.
Dr. Michael Grenis is a board-certified orthopedic surgeon with a subspecialty interest in hand surgery and the treatment of orthopedic trauma.
Born and raised in Newburgh, N.Y., Dr. Grenis received his undergraduate education at Cornell University where he majored in biochemistry. He earned an M.D. degree at New York Medical College where he was elected to Alpha Omega Alpha, the national medical honor society.
After medical school, Dr. Grenis did an internship in surgery, a residency in orthopedic surgery and a fellowship in hand surgery, all at New York University Medical Center and Bellevue Hospital in New York City. His special interest and advanced training in hand surgery encompasses the evaluation and treatment of conditions such as carpal tunnel syndrome, tendonitis, fractures and ligament injuries of the hand and wrist.
Dr. Grenis has been practicing orthopedic and hand surgery in Princeton since 1990. He has hospital privileges at the University Medical Center of Princeton at Plainsboro and Capital Health System.
Dr. Grenis has been named a “Top Doctor” by the Castle-Connolly Guide to Top Doctors in the New York Metro Area.
Dr. Grenis has published papers in national orthopedic review journals and has presented a scientific paper at a national meeting of the American Association for Hand Surgery. He is a member of the American Academy of Orthopaedic Surgeons, the New Jersey Medical Society, and the Orthopaedic Trauma Association.
See other doctors in Princeton Orthopaedic Associates
Outstanding doctor
Explained clearly and answered my questions.
Knowledgeable, professional and has an uncanny ability to explain things in layman’s terms. What a great experience.
I can’t say enough good things about Dr. Grenis! He is knowledgeable, kind and caring. I have had a great experience from surgery to recovery. Highly recommend this doctor for any kind of hand injury.
Very thorough
Very kind and took his time to explain everything
Very satisfied
Such a warm and caring doc, very knowledgeable.
Took his time to explain cause and options in a comforting manner
Dr. Grenis was professional and explained the injury and what my son's choices are. Dr. Grenis answered all our questions.