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.
General Management
Dr. med. Annina Althaus
Medical Director, Specialist in General Internal Medicine, Endocrinology & Diabetology
Carina
Richenberger
General Manager Ovivamed, medication-based therapy
Melanie
Donati
Registered Dietitian BSc, SVDE
Team Lead Dietetics
Dr. phil. Suzana Stojiljkovic
General Manager Oviva Dietetics and Psychotherapy
Specialist Physicians
Dr. med. Ali Mohammad
Specialist in General Internal Medicine & Clinical Pharmacology and Toxicology
Anne-Christin
Lehmann
Fachärztin für Allgemeine Innere Medizin
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. Isabel
Decurtins
Specialist in General Internal Medicine, Sports Medicine
Dr. med. univ. Katja Leitner
Fachärztin für Allgemeine Innere Medizin, Endokrinologie & Diabetologie
Matthias
Zehringer
Praktischer Arzt
Dr. med. Matylda
Zimny
Specialist in General Internal Medicine, Adiposologist DAG-DDG
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
Prof. Dr. med. Roger Lehmann
Senior Endocrinologist, Specialist in General Internal Medicine, Endocrinology & Diabetology
Sascha
Tawil
Specialist in Internal Medicine, European Certified Obesity Specialist (SCOPE)
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
Anouk Gschwendtner
Registered Dietitian BSc
Lead Dietitian Central Switzerland
Corina Malär
Lead Dietitian Oviva Clinic Dietitians
Corinne von Tobel
Registered Dietitian BSc
Lead Dietitian Region Zurich
Elodie Puertas
Registered Dietitian BSc ASDD
Lead Dietitian Region Romandie
Karin Lauener
Registered Dietitian BSc
Lead Dietitian Region Basel
Michele D’Ascanio
Nutritional Counselor BSc
Specializations: Pediatrics, Oncology, Obesity, and Vegan Nutrition
Selina Bürklin
Nutritional Counselor BSc SVDE
Specializations: Obesity, Nutritional Psychology, Lipid Metabolism Disorders
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.”
Georgia Karagianni
Federally Recognized Psychotherapist
Lead Psychotherapist Bern
“Change begins where we meet ourselves with understanding. Together we create space for new perspectives, personal growth and lasting change.”
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
licensed and accredited 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
licensed and accredited psychotherapist, FSP psychologist
“A holistic view of body, mind, and soul is a central component of our work.”
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
Your Contact Persons
Franziska Hofmann
Field Sales Representative
f.hofmann@oviva.com
Alexander Dorka
Business Development Manager
alexander.dorka@oviva.com