Dr. Ivan Gueorguiev graduated in medicine in 1996 in the Medical University, Sofia. In 1997 he started his career at the Radiation Treatment Clinic, National Oncology Center, Sofia. Enrolled in 1998 with a specialization in radiotherapy in the Medical University, Sofia. He acquired a specialty in Radiation Oncology in 2001.

He has worked as a radiation oncologist at the NOC, SALO-EAD and UMBAL Tokuda.

Since 2016 he has been working as a Radiation Oncologist consultant in the Department of Radiation oncology and Radiosurgery at University Hospital Acibadem City Clinic Mladost He has numerous publications in Bulgarian and international journals.

Dr. Gueorguiev professional interests are in the area of dermato-oncology, Intensity modulated radiation therapy, (IMRT, VMAT), radiation therapy with respiration control (lung tumors, mediastinum, left breast cancer, tumors in the liver and near the diaphragm and kidney), stereotactic radiosurgery and radiotherapy, head and neck tumors, brain tumors, lung tumors, radiation treatments for benign diseases, high and low dose rate brachytherapy, radiotherapy quality management and organization.

Full member of the European Association for Therapeutic Radiology and Oncology (ESTRO), the European Association of Medical Oncology (ESMO), the Bulgarian Scientific Society of Medical Oncology, the Bulgarian Medical Association, the Guild of Radiation Therapists in Bulgaria at BAR.

In 2018, Dr. Gueorguiev and the team of the Department of Radiation oncology and radiosurgery, Acibadem City Clinic Oncology Center were awarded the second prize at the First National Conference on Health Innovation and Good Practices for the introduction of heart protective radiation therapy in patients with tumors of the left breast.