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About

We are surgeons specialized in treating diseases of the liver, pancreas and biliary system. We operate at Health Sciences North Hospital in Sudbury, Ontario which serves the catchment area of Northeastern Ontario. We are affiliated with the Northern Ontario School of Medicine and are involved in training medical students and residents. 

Dr. Jeffrey Shum MD, FRCSC, FACS
Office: Suite 3-22B. 885 Regent Street.
Sudbury ON. P3E 5M4
Tel: 705-222-9942
Fax: 705-222-0070

Dr. Jeffrey Shum is from London, ON. He completed his MD at Queen's University in Kingston before returning to London and completing a General Surgery and Critical Care Fellowship at Western University. He then completed a Multi-Organ Transplant Fellowship in 2012. ​

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Dr. Kengo Asai MD, PhD, FRCSC

Dr. Kengo Asai is from Saskatoon, SK. He completed his MD/PhD followed by General Surgery at the University of Toronto. He then completed a Fellowship in HPB Surgery at the Mayo Clinic in Rochester MN.  

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Dr. Sanjay Patel MBBS, MSc, FRCSC
Office: 13-1500 Paris Street. Sudbury ON. P3E 3B8
Tel: 705-665-8229
Fax: 705-525-0884
Ms. Tammy Gravelle

Dr. Sanjay Patel is from London ON. He attended the Royal College of Surgeons in Ireland completing a degree in Medicine. Dr. Patel continued his training in General Surgery, Multi-Organ Transplant and Hepato-Pancreato-Biliary Surgery.

at Western University.

Tammy Gravelle graduated from the Medical Office Administration program in 2006. She worked at Health Sciences North and for family physicians before joining HPB Surgery in 2018.

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