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Dr. Michael Grenis

Specializing in Hand & Upper Extremities

Dr. Michael Grenis

Specializing in Hand & Upper Extremities

"I put a lot of trust and respect in what patients feel is going on in their bodies. We have to listen to patients. I think honoring that makes me a better doctor."
Dr. Grenis

Meet Dr. Grenis

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, majoring 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 particular 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.

Service Area
Hand and Wrist
  • Hand & Wrist Surgery (Fellowship Trained)
  • Elbow and Upper Extremity Surgery (Fellowship Trained)
  • Fractures of Upper and Lower Extremities
  • Microsurgery
  • Diplomate, ABOS
Contact Dr. Grenis

Dr. Grenis Biography

Experience & Consults
Awards & Certifications


  • University Medical Center of Princeton
  • Capital Health System
  • Pocono Medical Center


  • New York University Medical Center - General Surgery Internship
  • New York University Medical Center - Orthopedic Surgery Residency
  • New York University Medical Center - Hand Surgery Fellowship
  • New York Medical College - Medical Education
  • Cornell University - B.A. Biochemistry


  • American Academy of Orthopaedic Surgeons
  • New Jersey Orthopaedic Society
  • Orthopaedic Trauma Association


  • Alpha Omega Alpha Honor Society – New York Medical College, 1984
  • Named a “Top Doctor” by the Castle Connolly Guide to Top Doctors in
    The New York Metro Area since 2001


  • American Board of Orthopaedic Surgery Certification
  • New Jersey License
  • New York License
  • Pennsylvania License
  • North Dakota License


  • “Operative Treatment of Distal Radius Fractures in the Senior Populace,” presented at the American Association for Surgery of the Hand, October, 1990 in Boston, MA.
  • “Ankle Dislocation Without Fracture: Case Report and a Review of the Literature.” CONTEMPORARY ORTHOPAEDICS, August 1989.
  • “Guide for Proper Placement of an Asnis Screw Above a Sliding Hip Screw.” ORTHOPAEDIC REVIEW, July, 1989
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