1987 – 1994 Residency in Oral and Maxillofacial Surgery at the Dept. of Cranio,- Maxillofacial Surgery, Medical University Vienna ( Head: Prof. Dr. S. Wunderer und Prof. DDr. R. Ewers).
1992 Graduation from Dental School, Medical University Vienna ( Head: Prof. Dr. R. Slavicek).
1995 Visit of the Division of Plastic Surgery, ( Prof. Ralph Millard ), University of Miami, School of Medicine, Florida.
1995 Visit of the Plastic and Reconstructive Surgery Unit of the Hospital General “ Manuel Gea Gonzales”, (Prof. Fernando Ortiz – Monasterio ), Mexico City.
2002 Thousand Smiles Mission San Jose´, Costa Rica, Hospital de los Ninos, Hospital Calderon la Guardia, Universidad Latina de Costa Rica.
2018 Visiting Professor at Chang Gung Hospital, Craniofacial Surgery, Prof. Yu-Ray Chen
Since 1994 Senior Staff Member of the Dept. of Cranio,- Maxillofacial and Oral Surgery, Medical University Vienna.
Since 2004 Assistant Professor of the Dept. of Cranio,- Maxillofacial and Oral Surgery, Medical University Vienna ( Head: Prof. DDr. Emeka Nkenke ).
Main activity: Orthognathic Surgery, Preposthetic and Oral Surgery. Author and Co-author of multiple articles in national and international journals (www.millesi.at).
Vice- President of the International Association of Oral and Maxillofacial Surgeons, IAOMS, 2018/2019. Member of Board of Directors. President 2020/21.
Member of the Austrian Association of OMS and General Surgery. Member of the European Association of Cranio Maxillofacial Surgery. Honorary Member of the South African Association of Oral and Maxillofacial Surgery.