Meet Our Team. Holistically There for You.
At Oviva, an interdisciplinary team of physicians, nutrition professionals, and psychotherapists accompanies you. Together we support you step by step – tailored to your situation and your goals.
Medication-Based Obesity Therapy
Obesity is strongly shaped by prejudice – and as a result often remains underdiagnosed and undertreated. With Ovivamed, we create access to an open, effective, and bias-free treatment.
Anita Kirner – Medical Director, Medication-Based Obesity Therapy
Specialist Physicians
Dipl. med. Anita Kirner
Medical Director Ovivamed & Specialist in General Medicine (D)
Dr. med. Annina Althaus
Deputy Medical Director, Specialist in General Internal Medicine, Endocrinology & Diabetology
Prof. Dr. med. Roger Lehmann
Senior Endocrinologist, Specialist in General Internal Medicine, Endocrinology & Diabetology
Dr. med. Ali Mohammad
Specialist in General Internal Medicine & Clinical Pharmacology and Toxicology
Dr. med. Ashley
Neizert
Specialist in General Internal Medicine
Dr. med. Beatrice Hofmann
Specialist in General Internal Medicine
Dr. med. Blanka
Szilagyi
Specialist in General Internal Medicine, European Certified Obesity Specialist (SCOPE)
Dr. med. univ. (AT) Claudia Fédière
General Practitioner
Dr. med. Eliza
Coste
Specialist in General Internal Medicine
Dr. med. Isabel
Decurtins
Specialist in General Internal Medicine, Sports Medicine
Dr. med. univ. Katja Leitner
Fachärztin für Allgemeine Innere Medizin, Endokrinologie & Diabetologie
Nadia
Khan
General Practitioner
Nicole
Ziegler
Specialist in General Internal Medicine
Dr. med. Patricia
Wald
Specialist in General Internal Medicine
Dr. med. Regula Honegger
Specialist in General Internal Medicine, Endocrinology & Diabetology
Sascha
Tawil
Specialist in Internal Medicine, European Certified Obesity Specialist (SCOPE)
Medical Practice Team
Dilan
Müller
Senior Practice Coordinator – Team Lead & Location Development
Lauxna Thavarajasekaram
Medical Practice Assistant
Habibe
Hasani
Medical Practice Assistant
Tanja
Moser
Medical Practice Assistant
Viktoria
Schmidtmann
Medical Practice Assistant
Philipp
Hansert
Medical Student – Practice Assistant
Sixtine
Bonart
Medical Student – Practice Assistant
Dietary advice
Sustainable weight reduction is based on individually actionable changes in everyday life, as well as a holistic approach combining nutrition, physical activity, and stress management.
Melanie Donati – Registered Dietitian BSc, SVDE,
Lead Dietitian Switzerland
Nutrition Professionals
Meet some of our more than 80 nutrition professionals
Alexandra Schibli
Dipl. Dietitian HF SVDE
Lead Dietitian Eastern Switzerland
Specializations: Obesity, Diabetes, Metabolic Disorders, Food Intolerances
Michele D’Ascanio
Nutritional Counselor BSc
Specializations: Pediatrics, Oncology, Obesity, and Vegan Nutrition
Corina Malär
Lead Dietitian Oviva Clinic Dietitians
Selina Bürklin
Nutritional Counselor BSc SVDE
Specializations: Obesity, Nutritional Psychology, Lipid Metabolism Disorders
Anouk Gschwendtner
Registered Dietitian BSc
Lead Dietitian Central Switzerland
Corinne von Tobel
Registered Dietitian BSc
Lead Dietitian Region Zurich
Elodie Puertas
Registered Dietitian BSc ASDD
Head of Romandy
Psychotherapy
Evidence-based obesity therapy takes into account not only the body, but also the psychological and social influencing factors of each individual.
Dr. phil. Suzana Stojiljkovic, Federally Recognized Psychotherapist
Psychotherapists
Meet some of our more than 30 psychotherapists
Alessandra Gerber
Federally recognized psychotherapist, Specialist Psychologist for Psychotherapy FSP
“Every change begins with the first step — the decision to change something. We are happy to accompany you on this journey.”
Matthias Baumann
Federally Recognized Psychotherapist & Supervisor
Lead Psychotherapist Winterthur
“Oviva Psychotherapy offers you a modern, flexible, and integrative approach to strengthening your quality of life and self-esteem on the path to a healthier life.”
Dr. phil. Niclà Lozza
Federally recognized psychotherapist, Specialist Psychologist for Psychotherapy FSP
“Studies show that psychological factors such as emotional eating patterns, self-esteem, and stigmatization play a central role in obesity. This is precisely where we focus, addressing these topics in a targeted way.”
Stefanie Traber
Federally recognized psychotherapist, Psychologist FSP
“A holistic view of body, mind, and soul is a central component of our work.”
Georgia Karagianni
Federally Recognized Psychotherapist
Lead Psychotherapist Bern
Referral Management and Partnerships
We see ourselves as your partner and accompany the entire process – from straightforward referral to transparent feedback on the course of therapy.
For us, what matters is not only the therapy itself, but also the trusting collaboration with you as a referring professional, in order to achieve the best outcomes for patients together.
Your Contact Persons
Franziska Hofmann
Field Sales Representative
Alexander Dorka
Business Development Manager