OpenHealth Company brings together over 50 experts from the world of health studies, doctors, pharmacists, bio-statisticians, epidemiologists, data scientists, healthcare economists and digital healthcare specialists.

OpenHealth Company federates proven expertise, knowledge of your sector and its challenges and a close-knit team, focused on providing customised solutions.

Proud of the company's regional links, working close to professionals in the field, the team is divided between our offices in Vannes (research and production) and Paris (strategy, sales, international development).

Together we work by your side every day to build surveys and solutions adapted to your requirements.


Management team and department heads

Dr. Patrick GUÉRIN - Président Directeur Général

Dr Patrick Guérin

President - Chief Executive Officer

A veterinary surgeon, Patrick Guérin founded Celtipharm in 2000, leader in France in real-time analysis of healthcare data. With detailed knowledge of french pharmacies with which Celtipharm contributed to the implementation of the "dossier pharmaceutique", the company became a benchmark expert in marketing studies and health data analysis. Driven by a vision of data sharing as the catalyst for innovating a knowledge-based healthcare service, in 2010 with a team of epidemiologists Patrick Guérin developed real-time tracking indicators for epidemics and contributed to many published articles on the subject. He launches OpenHealth Company in 2015. Patrick Guérin has been Vice President of France Biotech, the French Association of Biotech and Medtech, until 2018.

Catherine Commaille-Chapus - Directrice de la Stratégie

Catherine Commaille-Chapus

Strategy Director

A graduate of ESCP with a law degree and a Master's in political studies (Science-po Paris), she has over 20 years experience in transformation projects. She began her career in london before becoming a manager at Deloitte Consulting. She then joined Air France - KLM as Program director. In 2008, she became Assistant Director for deployment and use at Asip Santé, the government agency responsible for rolling-out digital healthcare. There, she managed major public policy projects like tele-medicine and healthcare protocols. She joined OpenHealth Company at its launch in 2015.

Nicolas Grelaud - Commercial Director

Nicolas Grelaud

Operations Director

A graduate of Sciences Po Paris, he has nearly 10 years international experience within biopharmaceutical industry, in the field of Allergen Immunotherapy. He began his career in Lisbon and Milano as Marketing analyst before becoming Market Research & Strategy Director at Stallergenes Global Marketing. In 2011, he became General Manager in Turkey. Back to Global Marketing in early 2015, he took over Products LifeCycle management position. He joined OpenHealth Company in January 2016 and led, within Strategy Department, the international development, before taking over responsibility for the Operations Direction.

Maria Morizet - Account Director

Maria Morizet

Account Director

Graduated from Växjö University in Sweden with a Master’s Degree in International Business, she has 15 years of experience in the pharmaceutical industry in therapeutic areas such as dermatology, respiratory allergies, gastro-enterology and oncology. She started her career with marketing analysis and sales positions for Galderma’s EURMEAA division and for corporate Stallergenes-Greer’s where she became later Market Access Manager. She joined OpenHealth Company in January 2017 as Account Director.

Marie-Pierre DANIEL - Directrice des Ressources Humaines

Marie-Pierre Daniel

Partner - Secretary General - Data Protection Officer

A graduate in corporate management (Nantes IAE), she has collaborated with Celtipharm since its creation in 2000. She is specialised in quality, Hr and data protection. She is responsible for the company's corporate social responsibility certification. In 2011, she wrote a professional thesis on personal data management in educational therapy. She is the Data Protection Officer (DPO) of the company.

Didier Rolland - Responsable Administratif et Financier

Didier Rolland

Finance Director

A graduate of Ecole Supérieure de Gestion et d’Expertise comptable (DECF), he joined the Renault Retail Group in 2001, official retailer of Renault and Dacia products. Initially accounts and finance manager, he became purchasing coordinator for Europe. He joined Celtipharm in 2010.


May 31
May 29
May 28