John Brennan, MD

About

JOHN BRENNAN, MD is an orthopedic surgery located at 6 TECHNOLOGY DR STE 100 in EAST SETAUKET, NY.

John Brennan is one of 14 orthopedic providers listed in EAST SETAUKET, NY on AdvOrtho.

Practice at a glance

In 2024, 44% of John Brennan's identifiable Medicare procedure volume was knee work. Their most frequent service was aspiration and/or injection of fluid large joint using ultrasound guidance for 436 Medicare patients.

Most-performed procedures, 2024

• Aspiration and/or injection of fluid large joint using ultrasound guidance

  1,015

  436 patients · above the state median of 103

• Aspiration and/or injection of fluid from large joint

  128

  102 patients · near the state median of 91

• Replacement of knee joint, both sides of knee

  27

  26 patients · near the state median of 30

• Injection of trigger points, 1-2 muscles

  22

  20 patients · near the state median of 22

• Repair of shoulder rotator cuff using an endoscope

  12

  12 patients · near the state median of 14

• Aspiration and/or injection of fluid from medium joint

  12

  11 patients · below the state median of 25

Training and practice

John Brennan has been in practice since 1993, after graduating from State University of New York Downstate Medical Center.

• Practices with Orthopedic Assoc of Long Island Physicians and Medical Group PLLC (31 clinicians)
• Affiliated with St Charles Hospital and Suny/Stony Brook University Hospital

Registry record

• Licensed in New York
• Practices within a group or organization

Credentials: Doctor of Medicine (MD)

An MD degree indicates completion of a medical doctorate program focused on allopathic medicine. MDs complete four years of medical school followed by residency training in their chosen specialty. Orthopedic surgery residencies typically last five years and include extensive training in surgical and non-surgical treatment of musculoskeletal conditions.