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Douglas Matthew Petraco, MD

dr petraco

Contact Information:
Phone: (631) 689-4162
View Dr. Petraco on Google here

American Board Orthopedic Surgery, Arthroscopy & Joint Replacement Surgery

Dr. Petraco graduated cum laude from Yale University in 1988, after which he received his medical degree from Cornell University Medical College graduating with academic honors. His post-graduate training included an internship at NYU Medical Center and an orthopedic surgery residency at The Hospital for Joint Diseases – Orthopaedic Institute, where he was chosen to serve as an executive chief resident in his final year. Dr. Petraco also completed a research fellowship in biomaterials and biomechanics at The Hospital for Joint Diseases. He is a fellow of the American Academy of Orthopaedic Surgeons and is board certified by the American Board of Orthopaedic Surgery.

Dr. Petraco specializes in joint replacement surgery of the hip and knee. He prides himself on offering the latest advanced techniques in joint replacement surgery including mini-incision hip and knee replacement. As director of the Department of Orthopedics at St. Charles Hospital, Dr. Petraco was instrumental in bringing MAKOplasty® robotic partial knee resurfacing to the hospital. This minimally invasive approach, combined with a patient specific surgical plan allows more accurate implant placement resulting in a more natural feeling knee compared with total knee replacement. Patients are typically discharged home from the hospital the same day of surgery.


"From the day my wife and I met Dr Petraco and his staff, we knew she had chosen the right surgeon for her total knee replacement. He was extremely attentive and compassionate to all of her needs. Whenever she had a question and called his office, she received a reply from him personally and promptly. Shortly after her surgery was scheduled, her sister went to see Dr. Petraco and found out she too needed a knee replacement. Dr Petraco arranged for her surgery the same day as my wife and even got them in the same room for an overnight stay. This again shows what a compassionate doctor he is. Her last visit was yesterday (8 weeks post-op) and she is thoroughly happy and walking pain free. Thank you Dr. Petraco and your entire staff." - AS


  • Total Hip Replacement
  • Total Knee Replacement
  • Partial Knee Replacement
  • Robotic Joint Replacement
  • Knee Arthroscopy


  • East Setauket
  • Riverhead
  • Wading River

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East Setauket

6 Technology Drive
Suite 100
East Setauket, NY 11733


500 Commack Road
Suite 150B
Commack, NY 11725


55 Medford Avenue
Suite E
Patchogue, NY 11772


715 Roanoke Ave.
Building A, Ste. 3
Riverhead, NY 11901


325 Meeting House Lane
Building One
Southampton, NY 11968

Wading River

6144 Route 25A
Building A Suite 4 & 5
Wading River, NY 11792

West Babylon

60 Fleets Point Drive
Suite 1
West Babylon, NY 11704

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