Accessibility Tools
  • HipInsight System Augmented Reality Anterior Total Hip Replacement

    Dr. Reinhardt is the first surgeon on Long Island and first in Northwell Health System to use Hip Insight technology for hip replacement surgery.

  • Outpatient Hip & Knee Replacement
    Outpatient Hip & Knee Replacement Ensuring Faster Recovery

    Outpatient hip & knee replacement is a surgery that does not require an overnight hospital stay.

  • Robotic Hip & Knee Replacement Advanced Technology

    Robotic-assisted joint replacement is an innovative alternative to the conventional surgical...

  • Robotic Hip & Knee Replacement
    Partial Knee Replacement Surgery Advanced Technology

    The Mako Robotic Partial Knee Replacement is intended for use in individuals with osteoarthritis...

American Board of Orthopaedic Surgery (ABOS)
Board Certified & Fellowship Trained Orthopaedic Surgeon "Personalized care with the goal of reducing pain and optimizing function"

Keith R. Reinhardt, MDSpecialized in adult reconstructive surgery of the hip & knee

Keith R. Reinhardt, MD

Keith R. Reinhardt, MD FAAOS specializes in adult reconstructive surgery of the hip and knee, including primary and revision joint replacements. He is the Chief of Joint Reconstruction and founder of the Institute for Joint Replacement at South Shore University Hospital. Dr. Reinhardt holds the academic title of Assistant Professor at the Donald and Barbara Zucker School of Medicine at Hofstra/Northwell.

  • Publications
    Virtual range of motion is a safe and acceptable alternative to intra-operative manual range of motion testing in direct anterior robotic total hip arthroplasty
    1 March 2024
  • Publications
    Patient-Specific Venous Thromboembolic Event Prophylaxis in Total Joint Arthroplasty Literature-Supported Guidelines
    21 June 2023
Star RatingsPatient Testimonials
  • Absolutely LOVE Dr Reinhardt!!!! He did an amazing job in my hip. He gave me myLife back. Highly highly recommend him and I have. 2 friends husband have used him. He's the best!!!!!!
  • I have recommended to 3 people whom have already been through a procedure and had wonderful experiences.
  • Dr. Reinhardt exhibits exceptional listening & analytical skills. As my case has progressed, other issues have arisen which complicate a treatment protocol. He is clear, concise, and methodical in explaining possible courses of action to reach a successful conclusion. I am well-pleased with my progr...
  • Definitely would recommend to others. Dr. Reinhardt and PA James both had great "bedside" manner, were very easy to talk to and it was easy to understand what they were speaking about.
  • I have recommended this practice to several people. Dr Reinhardt is congenial, professional, and in my opinion and expert in his field.
Patient Education & Resources

We offer various instructional resources and videos to help you understand your situation better and the importance of participating in the treatment plan

Patient Education Videos
Locations & Directions We provide the highest quality orthopaedic healthcare in Babylon & Smithtown, NY.
  • Northwell Health Physician Partners Orthopaedic Institute at Babylon
    200 West Main Street
    Suite 1 Building B
    Babylon, NY 11702
  • Northwell Health Physician Partners Orthopaedic Institute at Smithtown
    222 Middle Country Road
    Smithtown, NY 11787