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About Us

Dr. Stefan Walzer

Dr. Stefan Walzer

Dr. Stefan Walzer has more than 14 years experience in payer strategy, pricing, health economics and reimbursement submissions and is the founder and general manager of MArS Market Access & Pricing Strategy GmbH based in Germany. He previously worked as a payer consultant for various global pharmaceutical and medical device / diagnostic companies, successfully launching their products across the world. Dr. Walzer was also the Global Payer Strategy Leader for various products and compounds of F. Hoffmann - La Roche AG, where he successfully developed early payer strategies as well as launching and maintaining the reimbursement process for top brands and early compounds. Dr Walzer is experienced in the development of early payer strategies and the related evidence generation. Furthermore he is also capable in translating the clinical and economic evidence into successful reimbursement submissions and pricing negotiations especially in Austria, Germany and Switzerland. Additionally he also teaches at the Master course of Consumer Health Care at the Charitè in Berlin (Germany) and is a tutor in market access and health technology assessment at the State University of Baden-Wuerttemberg (Germany).

Dr. Walzer is the Head of the committee "Inpatient care" of the German Health Economic Association (DGGÖ). Furthermore he is a leading member of the Special Interest group for Medicial Nutritions at the International Society for Pharmacoeconomics and Outcomes Research (ISPOR). Dr. Walzer is also a member of the Austrian Health Economic Association (ATHEA) and the newly founded Swiss Health Economic Association. Additionally, he is also a member of the Access Advisory Committee of the Global Pneumonia Prevention Coalition.

Dr. Walzer received a Master of Science in Economics from the University of Tuebingen (Germany), a PhD in Health Economics from the University of Zurich (Switzerland) and a Diploma in Clinical Trials from the London School of Hygiene and Tropical Medicine (UK). He is co-author of more than 40 peer-reviewed scientific articles and more than 100 scientific abstracts. Furthermore Dr. Walzer is the Editor in Chief of the German Journal of ClinicoEconomics (www.germanjournal-clinicoeconomics.de) and the lead author of the book chapter “Vergütungshöhe und Preissetzung” [Reimbursement value and pricing] in Business Planning in Health Care (http://www.springer.com/de/book/9783658081850).

Lutz Vollmer

Mr. Lutz Vollmer is a health economic expert with a special focus on health geography and the German market access system. He was working in Research and Administration at the Universities of Tuebingen and Kiel (Germany) for over 12 years while he was also executing primary market research projects as a free lancer. Since 2014 he supports the MArS Team as a Health Economist with a focus on payer research, health geographic solutions and the analysis of German market access decisions. In the last years he was running various interview projects in the AMNOG environment, developed successful reimbursement pathways and executed systematic literature reviews in the field of pharmaceuticals for AMNOG submissions. Furthermore he has experience in the development of reimbursement submissions for medical devices and drugs. 

Mr. Vollmer is a member of the working group for "E-Health" and "Innovation in hospitals" at the German Health Economic Association (DGGÖ).

Lutz Vollmer studied geography at the Universities of Tuebingen and Stuttgart (Germany) and at the Portland State University (Oregon, USA). He holds a Master of Science in Geography and an HTA-certificate from the Free University of Berlin (Germany). Mr. Vollmer is author of several articles including research presentations and papers in geography and health economics. Also at the University of Applied Sciences of Rottenburg / Neckar (Germany), Mr. Vollmer teaches fundamentals and deeper aspects of human geography in study programs of regional management.

Wolfgang Schleich

Wolfgang Schleich is a health economist by education and graduated from the University of Bayreuth (Germany) and Trondheim Business School (Norway).

Mr. Schleich brings prior experience through a number of assignments including the Global HTA & Payment Policy department at F. Hoffmann-La Roche, the German affiliate at Novartis, with the health consultancy Oberender & Partner, and the Institute for Health Economics & Clinical Epidemiology, a research institute affiliated with the University of Cologne. Additionally, he gained experience at MArS with respect to strategic pricing as well as the development of reimbursement submissions (e.g. AMNOG). Furthermore he planned and executed various payer researches and advisory boards.

Mr. Schleich wrote his master’s thesis in the topic of “Value of the HTA Core Model as Strategic Planning Framework for Product-Specific Evidence” at Roche Pharma and worked following his graduation as Associate Health Economist in its Global Health Economics department. In this position he supported affiliates in their reimbursement application process. In parallel to this work, he has contributed to a political think tank (Young Lions Health Parliament) relating to the future of the German health care system.

Dunia Krüger

Dunia Krueger is a physiotherapist by training and has over 25 years work experience especially in the areas of orthopedics, surgery and oncology. She is experienced in medical accounting and coding as well as in direct discussions and negotiations with health insurances. Dunia Krueger is also knowledgable in cost and medical data searching and its interpretation.

Franz Mayer

Franz Mayer is a health economist by education and is studying at the University of Ravensburg-Weingarten (Germany). He brings prior experience through the work as student assistent at the professorship of health economics in Weingarten and an internship at the German Managed Care Association BMC and in several healthcare-related issues. 

At the moment Franz writes his bachelor thesis in the topic of „What drives pricing in the German AMNOG?" at MArS and also supports the team in various projects.



Katharina Kolbe

Katharina Kolbe is a health economist with a special focus on medical devices, patient centricity, pricing and regulation in the EU-15. In the past, Mrs. Kolbe worked as Managing Director for the Institute of Applied Health Economics in Bayreuth, and as a medical writer for a medical device manufacturer. Before, she worked as Quality Manager and Internal Auditor for a medical device company and was responsible for the development of the Quality System and for the company’s official certification. 

Mrs. Kolbe is currently also working on her doctoral thesis in regulatory and pricing issues of medical devices and works as lecturer in the field of Health Economics and Policy. She holds a Master’s degree in Health Economics from the University of Bayreuth. Her undergraduate studies were in Health Sciences at Hamburg University of Applied Sciences and – as part-time student – in Health Economics at the Apollon University of Applied Sciences in Bremen.