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Committed to Teamwork

As a leading clinic in the field of minimally- and non-invasive aesthetic treatments under medical director Nikolaus Duschek, MD, PhD., at YUVELL® we guarantee the highest level of medical expertise. Our medical team has a wide variety of specializations and regularly participates in international congresses and advanced training courses in order to ensure the best possible treatments based on the latest scientific findings.

CEO & Co-Founder

Valentina Prinz

Valentina Prinz, BA, MBA


In 2017, Valentina Prinz took over the management of the clinic and research center for aesthetic medicine, which is unique in Austria, after working at the UNO for many years.


“We offer our customers and patients individual consultation, the highest level of comfort and the best products currently available in the cosmetic and aesthetic sector on 500m². Our doctors are permanently educating themselves and are in constant exchange with colleagues worldwide. All on behalf of your beauty.”

Medical Team

Nikolaus Duschek, MD, PhD.

Board certified dermatologist and surgeon 

Nikolaus Duschek is a board certified dermatologist and surgeon. With a long and outstanding experience in skin cancer surgery and prevention, as well as in aesthetic dermatology, he is an expert especially in treatment with fillers, neurotoxins and thread lifts. His other specialties are laser medicine (rejuvenation, scars, pigment and tattoo removal, laser surgery), treatment of veins and non-invasive body contouring.

He completed his extensive residency training in Austria, Switzerland and France, which was followed by years of international research, lecturing and teaching. Dr. Duschek’s publications in surgery and dermatology have received multiple awards. In 2015, he received his doctorate (PhD.) and in 2017, his habilitation (Venia docendi) followed.

More information can also be found under

Prof. Dr. Radtke

Prof. Christine Radtke, MD, MBA, FEBOPRAS 

Board certified plastic, reconstructive and aesthetic surgeon 

Prof. Radtke completed her studies in human medicine at the Hannover Medical School. During several stays abroad, including Yale and Harvard University in the USA, she focused her residency on the specialty of plastic, aesthetic and reconstructive surgery.

Throughout her career she has received numerous prestigious international awards.

She joined the Medical University of Vienna as professor and head of the Clinical Department of Plastic and Reconstructive Surgery on October 1, 2016. She has been treating patients in her private practice at Yuvell since 2020: minimally invasive aesthetic treatments and minor medical procedures are performed as part of her practice.

Mahtab Saidi-Zecha, MD 

General practitioner, Aesthetic & Orthomolecular Medicine

Dr. Saidi-Zecha is the founder of Vitalmedizin and deputy medical director of Privatklinik Salzburg.

As an experienced general practitioner, she strives to help her patients achieve their optimal body and lifestyle.
With a holistic approach, she offers modern and knowledge-based medicine that combines conventional and holistic methods to provide individually tailored therapies and preventive measures. Dr. Saidi-Zecha attaches great importance to providing her patients with comprehensive and personal support based on their individual needs, wishes and complaints.

Since January 2024, she has opened her second practice at Yuvell in Vienna, with a special focus on nutritional advice, weight management, skin quality and personalized infusion therapy.

Clinical Research

Mia Čajkovský

Clinical Project Manager

Mia Čajkovský manages and organizes innovative single-center as well as international multi-center studies and several projects in the field of aesthetic medicine. Coordinatioin, multidisciplinary cooperation with sponsors as well as communication as an interface between research, physicians and patients are the focus of her work as a Clinical Project Manager and Study Coordinator. Since the end of 2020, Mia has been responsible for managing and leading clinical projects and publications in close collaboration with medical experts, pharmaceutical companies and clinical research organizations.

Mia studies Biotechnology at the University of Natural Resources and Life Sciences.

Michelle Friedrich, MSc 

Clinical Study Coordinator

Michelle Friedrich joined the Yuvell study team in January 2022 and is co-responsible for conducting clinical trials according to GCP. As a study coordinator, she works closely with patients and investigators.

During her studies in nutritional sciences, she was able to gain her first experience in the field of clinical trials as part of her master’s thesis. As a study assistant, Michelle was part of a pilot study in gynecological oncology and was responsible for study visits and data collection. This sparked her interest in continuing to work in the field of clinical research.

Daniel S. Müller, MD, MBA

Board certified dermatologist

Dr. Daniel S. Müller is a board certified dermatologist. He is specialized in aesthetic & anti-aging medicine, laser medicine, scar treatment, minimally invasive surgeries such as thread lifting, hair disorders and other specialties such as body contouring through liposuction or bodysculpting.


His expertise makes him a speaker at medical congresses. As a lecturer, he is active throughout Europe for continuing medical education in the field of aesthetic medicine. He is intensively involved in the development of new treatment methods in this sector and is the author of numerous articles. In addition to his work as an investigator in clinical research at YUVELL® in Vienna, he runs his own practice SKINMANAGER in Munich.

Monika Sulovsky 1

Monika Sulovsky, MD

General practitioner & Aesthetic Medicine

General practitioner Dr. Monika Sulovsky is a specialist in aesthetic treatments and has been working in aesthetic medicine since 2008. She has many years of experience in the fields of laser, thread lifting, Thermage, vampire lifting as well as botulinum toxin and filler treatments. Furthermore, she cares for patients interested in non-surgical body optimization using Thermage, EMSCULPT or even pelvic floor training through EMSELLA.

As an investigator at YUVELL®, she conducts numerous studies on aesthetic treatments, has a diploma in emergency medicine and additional training in orthomolecular medicine.

Quality Management

Mateja Sunitsch

Quality Officer

Mateja Sunitsch supports the control, coordination and optimization of quality management measures. Furthermore, she works on the development of procedures and processes for quality assurance in all departments of the company.

She has been part of the team since 2019 and significantly supported the establishment of the quality management system as well as the certification according to ISO:9001 and ISO:15224.

Currently, she is also a law student.

Reception & Administration

Isidora Lopati

Front Desk Manager

After many years of experience in office management and training as a medical assistant, Isidora Lopati actively supports the clinic in the back office and at the reception. She is responsible for general administration, appointment coordination, as well as the entire communication with customers and companies.

As an expert for skincare, she is the contact person for cosmetic-medical treatments such as Jetpeel.

Medical Advisory Board

Dr. Rainer Pooth, PhD. (DE)
Univ.-Prof. Dr. Christine Radtke, MBA, FEBOPRAS (DE)
Dr. Konstantin Frank (ES)
Dr. Steven Dayan (US)
Prof. Dr. Berthold Rzany, PhD. (DE)
auf Fillerbehandlungen
Schönen Valentinstag!

*gilt für alle Behandlungen die zwischen dem 14.02.2024 und dem 31.03.2024 gebucht werden


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