Oleg Ivanovich graduated from Ternopil State Medical Institute in 1975. He has been working at the Department of Oncology since 1984 (with the clinical base being the National Cancer Institute). 

In 2003, he defended his doctoral dissertation titled "Combined Treatment of Colorectal Cancer Patients with Intraoperative Cryodestruction and Spontaneous Thawing." He was a student of Professor I.P. Dedkov. 

He is a member of the European Association for Cancer Research (EACR) and the European Society of Surgical Oncologists (ESSO). 

He is the author of over 150 scientific papers, 42 author's certificates, and patents in Ukraine.