Our team

Konstantinos Choupis DDS, MSc, PhD

Oral & Maxillofacial Surgeon
Associate at Hygeia & Mediterraneo Clinics
PhD University of Athens, MSc University of London

Education & Training

• Graduated from Leonteio Lyceum of Athens (1980)
• Dental Degree, University of Athens (1986)
• Master’s Degree, Eastman Dental Hospital, University of London (1989)
• Specialized training in Oral and Maxillofacial Surgery at Mount Vernon Hospital, University College, and Eastman Dental Hospitals
• PhD with distinction, University of Athens (2009)

Professional Experience

• Practices exclusively at “HYGEIA” and “Mediterraneo” clinics, as well as a private surgical practice
• Former registrar at the Maxillofacial Surgery Clinic, Hippocrates Hospital, Athens
• Over 20 years of teaching and training undergraduate and postgraduate students as a clinical associate at the Dental School, University of Athens

Publications & Conferences

• Author of a chapter in “Modern Oral and Maxillofacial Surgery”
• Invited speaker at numerous national and international conferences
• Organizer and trainer for surgical and implantology seminars
• Published more than 20 articles in scientific journals

Professional Memberships

• Member and former treasurer, Hellenic Association of Oral and Maxillofacial Surgery (HAOMS)
• Member and former treasurer, Stomatological Society of Greece
• Member, European Association for Cranio-Maxillofacial Surgery (EACMFS)

He is married and has two children.

Georgios Giannoulis DDS, MSc
Oral Surgeon

He graduated from the 3rd Public High School of Glyfada in 2006 and in 2012 graduated from Charles university , faculty of medicine , Master in dentistry ( MDDr) .

From 2012 to 2015, he practiced General Dentistry at his private dental practice in  Glyfada, while simultaneously shadowing the Oral and Maxillofacial Surgery Practice of Konstantinos Choupis, actively participating in surgeries performed under general anesthesia at Mediterraneo Private Hospital.

During the period 2014–2015, he actively attended, every Wednesday, the activities of the Department of Stomatology at Andreas Syggros Hospital.

In 2015, for a period of three months (September–December), he observed and actively participated in all clinical activities (Outpatient Clinics, Oral Surgery under local and general anesthesia, Oncologic Surgery, Trauma Surgery, Orthognathic Surgery, as well as on-call duties) at the State University Clinic of Oral and Maxillofacial Surgery of the hospital in Salzburg, Austria (SALK), under the supervision of Professor Alexander Gaggl.

In 2016, he commenced his postgraduate training in Oral Surgery at the University Clinic of Oral and Maxillofacial Surgery, School of Dentistry, National and Kapodistrian University of Athens, which he successfully completed in 2019.

In 2024, he obtained the specialty title in Oral Surgery.

Marialena Oikonomou DDS, MSC
Oral Surgeon

Marialena Oikonomou is an oral surgeon and a graduate of the School of Dentistry at the National and Kapodistrian University of Athens (2014).

From 2014 to 2017, she specialized in Oral Surgery, working as a surgical assistant in the practice of maxillofacial surgeon K. Houpis, while also participating in surgery under general anesthesia at the Mediterraneo Clinic.

In 2016, she began her master’s degree in Oral Surgery at the National and Kapodistrian University of Athens (NKUA), which she completed in 2019. Since then, she has practiced exclusively in the field of Oral Surgery.

From 2019 to 2025, she served as a research associate at the Department of Oral and Maxillofacial Surgery at the National and Kapodistrian University of Athens, focusing on Oral Surgery and Implantology. In 2024, she obtained her official specialty in Oral Surgery.

She has a significant scientific presence, having participated in more than 70 conferences and presented over 30 papers at Greek and international meetings, as well as 4 presentations in roundtable discussions. Her work includes 2 publications in Greek scientific journals and 3 published abstracts in international journals.

Eleni Voltidi, DDS, MSc
Prosthodontist

Eleni Voltidi graduated in 2010 from the School of Dentistry at the University of Athens. She completed her internship at the Athens Garrison Dental Clinic (401 G.S.N.A.) and participated in preclinical teaching in Fixed Prosthodontics at the University of Athens.

In 2013, she entered the three‑year Prosthodontics specialty program at the University of Alabama at Birmingham (UAB), where she focused on the aesthetic and functional rehabilitation of damaged teeth and dental tissues. She specialized in comprehensive treatment planning for partially or fully edentulous patients, including implant‑supported restorations, fixed prosthodontics (crowns, inlays, bridges), and removable prostheses such as partial and complete dentures.

She served as an Adjunct Assistant Professor in the Department of Prosthodontics at the University of Minnesota, teaching undergraduate students while also practicing in specialized dental centres in Minnesota.

In 2018, she completed a one‑year fellowship in Maxillofacial Prosthodontics & Dental Oncology at the Mayo Clinic in Rochester, Minnesota.

Since 2019, she has been practicing as a prosthodontist both in the United States and in Greece.

Christina Sousanian

Operating Room Assistant – Sterilization

Elian Chrysanthou

Operating Room Assistant – Secretarial Services