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Theresa J.C. Pazionis, MD

Assistant Professor, Orthopaedic Surgery & Sports Medicine

Theresa Pazionis
For Patients
Contact Information

Contact Information

About Me

Clinical Interests

  • Spine surgery
  • Spinal deformity correction: scoliosis, kyphosis, saggital plane deformity
  • Adolescent idiopathic scoliosis (AIS)
  • Degenerative scoliosis
  • Degenerative spine disease: arthritis 
  • Cervical spine
  • Cervical spine fusion
  • Cervical spine motion preservation: cervical disc replacement, laminoplasty
  • Lumbar spine surgery: decompression, fusion
  • Microdiscectomy
  • Minimally invasive spine surgery
  • Spine tumor resection: en bloc resection, separation surgery
  • Orthopedic oncology
  • Primary malignant bone tumors: osteogenic sarcoma, chondrosarcoma, Ewing's Sarcoma, MFH etc.
  • Metastatic disease to bone
  • Primary malignant soft tissue tumors: sarcoma
  • Benign and benign aggressive bone tumors: giant cell tumor, etc
  • Benign and benign aggressive soft tissue tumors
  • Metabolic bone disease
  • Sarcopenia

Research Interests

  • Evaluation, treatment and outcomes in metastatic bone disease
  • Function and oncologic outcomes in the treatment of metastatic spine disease 
  • Chrondrosarcoma 
  • Spinal biomechanics

About Me

I take an evidence based, patient centered approach to your evaluation and treatment. Each consultation will begin with listening to your questions and concerns, and a thorough medical history, physical examination, and review of any available imaging. Together we will decide on the best treatment course within the framework of evidence based gold standard medical care. I treat every patient with the same care and compassion that I would expect for myself and my family.

Education, Training & Credentials

Educational Background

  • Fellowship, Spine Surgery, Hospital for Special Surgery, NY, NY
  • Fellowship, Orthopaedic Oncology, Memorial Sloan Kettering Cancer Center, NY, NY
  • Residency, Orthopaedic Surgery, McMaster University, Hamilton, Ontario, Canada
  • MD, University of Toronto, Toronto, Ontario, Canada


  • Orthopaedic Surgery


  • Fellow of the Royal College of Surgeons of Canada
  • American Association of Orthopedic Surgeons
  • International Society of Limb Salvage (ISOLS)
  • Musculoskeletal Tumor Society (MSTS)
  • North American Spine Society (NASS)