Dr Doornaert obtained his degree in Medicine at the Catholic University in Leuven in 1969.

He was an Otorhinolaryngology and General Surgery resident, and obtained a licentiate degree in Dentistry.

This was followed by a five-year course in Plastic Surgery.

He received three years of training in Reconstructive and Aesthetic Plastic Surgery at the H. Hart Hospital in Roeselare under Dr Robbe.

Two-year supplementary training:
in Paris with Dr Tessier (craniofacial and aesthetic surgery),  Dr Malek (schisis pathology),  Dr Tubiana (hand surgery), and in Nancy with Dr Dautrey (upper and lower jaw osteotomy).
in the USA with Dr Converse in New York (reconstructive surgery), Dr Kleinert in Louisville (hand surgery), and Dr Baker and Dr Gordon in Miami (facial aesthetic surgery)
in Mexico with Dr Ortiz-Monasterio (aesthetic surgery of the facial bone and tissue)

He set up practice as a plastic surgeon at H. Hart Hospital in Roeselare in association with Dr Robbe.

Present practice: Plastic Surgery & Mouth, Jaw and Facial Surgery, in association with Dr Vandevoort and Dr Fabre, Plastic Surgeons, and with Dr Demeulemeester, Dr Vuylsteke, Dr Bettens and Dr Timmermans, Mouth, Jaw and Facial Surgeons.

Besides attending national and international Plastic and Aesthetic Surgery congresses and reading the specialist literature, it was especially his visits to numerous leading plastic surgeons at their own surgeries that motivated him to consistently offer his patients treatment using the most state-of-the-art techniques.

In addition to Reconstructive Plastic Surgery, Dr Doornaert practices all aspects of Aesthetic Surgery, with specific experience in breast augmentation, eyelid and facial surgery, aesthetic nose correction, and facial skin rejuvenation using vitamin A acid preparations, derma roller techniques, and laser treatments.