The reviews listed below were collected independently of Princeton Orthopaedic Associates through rater8. Each review represents an authentic and verified patient experience.
Very down to earth personable Doctor
(3 days ago)
Feb-2026
Dr. Grenis is an exceptional physician who cares deeply about his patients. He listens well and is an effective communicator.
(1 week ago)
Feb-2026
The nicest Doctor
(1 week ago)
Feb-2026
Right to the point....knows what he's doing honest
(1 week ago)
Feb-2026
Friendly and thorough.
(1 week ago)
Feb-2026
Very easy to understand.
(2 weeks ago)
Feb-2026
Throughly explained surgical options and rationale for recommendation.
(1 month ago)
Jan-2026
He is always patient and caring. He saw my slightly nervous husband for the first time and amazingly he agreed to treatment, said he felt better within the hour.
(1 month ago)
Jan-2026
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.
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
Very down to earth personable Doctor
Dr. Grenis is an exceptional physician who cares deeply about his patients. He listens well and is an effective communicator.
The nicest Doctor
Right to the point....knows what he's doing honest
Friendly and thorough.
Very easy to understand.
Throughly explained surgical options and rationale for recommendation.
He is always patient and caring. He saw my slightly nervous husband for the first time and amazingly he agreed to treatment, said he felt better within the hour.
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.