Our Providers
John Tierney, DO
BOARD CERTIFIED ORTHOPEDIC SURGEON
SPORTS MEDICINE SPECIALIST
Dr. Tierney has more than 30 years of experience specializes in the diagnosis and treatment of sports injuries, joint disorders, and work-related musculoskeletal conditions.
ABOUT DR. TIERNEY
SPECIALTIES
EDUCATION
Dr. John Tierney is a board-certified orthopedic surgeon, Assistant Clinical Professor at Tufts University School of Medicine, fellowship-trained sports medicine specialist, and staff physician at New England Baptist Hospital and Boston Outpatient Surgical Suites. He also serves as the Medical Director of Greater Boston Orthopedic Center.
He applies the same comprehensive treatment strategies used for competitive athletes to the "industrial athlete," emphasizing prompt diagnosis, individualized treatment plans, and a safe, efficient return to work and daily activities.
-
Shoulder Arthroscopy
-
Rotator Cuff Repair
-
Shoulder Instability
-
Labral Tears
-
Knee Arthroscopy
-
Meniscal Tears
-
ACL Injuries
-
Foot and ankle
-
Osteoarthritis
-
Total Knee Replacements
-
Sports Injuries
-
Occupational Medicine
Medical School
-
Philadelphia College of Osteopathic Medicine
Residency
-
Genesys Regional Medical Center, Michigan State University
Fellowship
-
New England Baptist Hospital – Sports Medicine
Gabriella Freitas PA-C, RT(R)
PHYSICIAN ASSISTANT
ORTHOPEDIC SURGERY
Gabriella Freitas works alongside Dr. John Tierney, evaluating and treating a wide range of musculoskeletal conditions. Her clinical interests include orthopedic trauma, shoulder and knee disorders, elbow pathology, and sports-related injuries.
ABOUT GABRIELLA
EDUCATION
Gabriella is a board-certified Physician Assistant specializing in orthopedic surgery, sports medicine, and work-related injuries. She provides comprehensive nonoperative orthopedic care, serves as First Assist for arthroscopic and total knee arthroplasty surgeries, and performs in-office procedures including joint injections and Iovera® cryoneurolysis.
Gabriella earned her Master of Physician Assistant Studies from the Massachusetts College of Pharmacy and Health Sciences (MCPHS) in 2025. Before becoming a Physician Assistant, she spent seven years as an X-Ray Technologist at a Level I Trauma Center. Working alongside orthopedic surgeons in both the emergency department and operating room inspired her to pursue a career in orthopedic medicine, where she could play a more active role in diagnosing, treating, and guiding patients throughout their recovery. Gabriella strives to provide thoughtful, patient-centered care by listening to her patients' concerns and helping them make informed decisions about their treatment.
Outside of the office, Gabriella enjoys strength training, Pilates, exploring the New England outdoors, and trying new restaurants with family and friends.
Undergraduate
-
Rhode Island College – BS in Medical Imaging Radiologic Technology, Providence RI
Graduate School
-
MCPHS – MPAS in Physician Assistant Studies, Worcester MA
Work Experience
-
UMass Memorial Medical Center University Campus, Worcester MA
-
Brown Health University, Providence RI
Eugenio Martinez, MD
PHYSIATRIST
BACK PAIN MANAGEMENT, PAIN MANAGEMENT
Bio Coming Soon!