The reviews listed below were collected independently of Princeton Orthopaedic Associates through rater8. Each review represents an authentic and verified patient experience.
Dr. Grenis has a compassionate and friendly disposition. From the very first visit, he made me feel comfortable and involved me in decisions regarding my surgeries. There should be more doctors , of any specialty, like him.
(4 days ago)
Jan-2026
Professional and personable.
(4 days ago)
Jan-2026
Informative. And able to give me answers. Caring doctor.
(4 days ago)
Jan-2026
Knowledgeable, warm and kind!
(3 weeks ago)
Dec-2025
Dr.Grenis, is excellent.
If you are ever unfortunate enough to break something, I would highly recommend him for you care.
(3 weeks ago)
Dec-2025
Staff & Dr Grenis were very efficient. He explained everything amd took care of my problem. Thank you
(3 weeks ago)
Dec-2025
Dr. Grenis is just what I need in a specialist. Easy to speak with and explains without talking over my head. Takes his time and is kind (and funny). I’d highly recommend him for any ortho needs (his specialty is hand/wrist).
(1 month ago)
Dec-2025
Dr. Grenis performed Carpel Tunnel surgeries on both my hands. After all the dust settled and the PT was completed, I am very happy with the results. He's now managing my trigger finger, and I'm very hopeful. Even if I need another hand surgery, I'm confident he's the right doctor. My Mother-in Law is a nurse at a local surgical center in Princeton, and she says he's the absolute best hand doctor around. So, A++ rating from this guy.
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
Dr. Grenis has a compassionate and friendly disposition. From the very first visit, he made me feel comfortable and involved me in decisions regarding my surgeries. There should be more doctors , of any specialty, like him.
Professional and personable.
Informative. And able to give me answers. Caring doctor.
Knowledgeable, warm and kind!
Dr.Grenis, is excellent. If you are ever unfortunate enough to break something, I would highly recommend him for you care.
Staff & Dr Grenis were very efficient. He explained everything amd took care of my problem. Thank you
Dr. Grenis is just what I need in a specialist. Easy to speak with and explains without talking over my head. Takes his time and is kind (and funny). I’d highly recommend him for any ortho needs (his specialty is hand/wrist).
Dr. Grenis performed Carpel Tunnel surgeries on both my hands. After all the dust settled and the PT was completed, I am very happy with the results. He's now managing my trigger finger, and I'm very hopeful. Even if I need another hand surgery, I'm confident he's the right doctor. My Mother-in Law is a nurse at a local surgical center in Princeton, and she says he's the absolute best hand doctor around. So, A++ rating from this guy.
Very friendly experience with staff and doctor.
Always such a pleasure.