About Medis - Learn all about Medis Medical Imaging

Our why

Improving the lives of patients by empowering medical professionals with the ultimate cardiovascular imaging solutions.

Our history

For over 30 years, Medis has been providing high-quality quantitative analysis solutions for cardiovascular imaging to the medical community

Medis was created in 1989 as a spin-off of the Leiden University Medical Centre (LUMC Netherlands). Our founder and current CSO, Hans Reiber, built the company focusing on X-ray and image analysis of the heart with the mission to make these tools available to all medical researchers and specialists.

Our heritage and core values are based on this strong purpose of contributing to a healthier society by providing the right tools to cardiologists, radiologists, researchers, and industry partners.

Our promise

Simplicity without compromising accuracy

Medis has been a trusted provider of high-quality quantitative analysis solutions for cardiovascular imaging for over 30 years. Our internationally recognized software combines simplicity with accuracy, ensuring ease of use and clinical excellence for patients worldwide.

At Medis, quality and accuracy are key. 

We prioritize quality and accuracy, rigorously testing and validating our software to deliver solutions of the highest standard, without compromise. Our meaningful innovations have significantly improved the diagnosis and treatment of patients around the world, reinforcing our commitment to advancing healthcare outcomes.

“Currently, the AI in the software is so powerful that in some cases adaptation might even worsen your outcome. This has increased our ease of use, saved us a lot of time and consequently increased the quality of the clinical reporting.”

Dr. Robin Nijveldt

Cardiologist

“Proven accuracy of the measurements make the software excellently suited for our MRI core Lab”

Prof. Sebastian Kelle

Cardiologist

“Medis provides reliable and easy to use tools. We review cases with the team each day and find the viewer extremely valuable for these review sessions.”

Dr. Raymond Kwong

Radiologist

Our team

A team on a mission

We believe that diversity is not just a buzzword; it’s a cornerstone of innovation, progress, and success. We are committed to fostering an environment where every individual feels valued, respected, and empowered to bring their authentic selves to work each day.

Committed to having an open, honest and diverse workplace. 

Diversity in our workforce is not limited to visible differences such as race, ethnicity, gender, age, or sexual orientation. It extends to a variety of perspectives, experiences, and backgrounds that enrich our culture and drive our collective growth. We recognize that diversity sparks creativity, fuels innovation, and enhances problem-solving capabilities. By embracing diverse viewpoints, we are better equipped to understand and serve our diverse customer base and communities.

Our priority

Our customers are at the center of everything we do.

Every interaction, every customer insight is meaningful to us. We put the customer at the center of everything we do and go beyond simply knowing what customers want, to deeply understanding the context of their needs. We listen, learn and are quick to adapt and customize our services to the changing needs of our customers.

We are committed as a company to continuously improving the user experience of our products and services. 

How do we achieve this:

We speak and listen to our customers and partners to analyze the customer feedback and unveil insights.
We team up with clinicians and researchers to understand the importance and impact of developing a new feature and address their needs.
We measure customer satisfaction on a yearly basis.

“I have seen Medis grow throughout the years and stayed in close contact with the team to share ideas and suggestions. I feel that Medis actively uses my input to improve the products and overall customer experience.”

Dr. Robin Nijveldt

Cardiologist

“Medis has always been very responsive to our needs and requests.”

Mimount Bourfiss

MD PhD Candidate

“Medis have consistently been open to new research ideas and implement these improvements with product updates. We highly recommend “Medis Suite” to any clinician and researcher in the field of cardiac MRI.“

Prof. Carsten Rickers

Cardiologist

Our partners

Our management

Responsible leadership and independent supervision

The management team

Maya Barley

CEO

Maya joined Medis in early 2023 as Chief Product Officer and is appointed CEO as of August 2023. She brings over 15 years’ experience in leadership, product management and innovation positions across a broad range of companies in the medical device space including Philips, Keeler, and LumiraDx. Maya is passionate about working at the clinical-technical-business interface, understanding workflows and trends, and using those insights to drive healthcare business strategy, product development, and clinical studies in multi-national environments. She has a PhD from the Harvard-MIT Division of Health Sciences and Technology and an MSc in Electrical Engineering from MIT.

Ton-Tijn Hulleman

CFO

Ton-Tijn joined Medis in early 2025 as Chief Financial Officer/Chief Operations Officer. He brings over 25 years’ experience in broad leadership positions, of which 15 years in Medtech. In previous positions he was responsible for international finance and operations management at -amongst others- AngioDynamics, Atricure and Sirius Medical. Ton-Tijn's forte is in strategy, process integration and scaling. He holds Msc's in Finance and Control, M&A and Business Valuation and Health Sciences.

Johan (Hans) HC Reiber

CSO

Hans is co-founder and former CEO of Medis. He is also founder of the Division of Image Processing (LKEB), initially at the Thoraxcenter in Rotterdam and later at the Leiden University Medical Center (LUMC). He is emeritus professor for cardiovascular imaging both at the LUMC and the Interuniversity Cardiology Institute of the Netherlands (ICIN) and member of the Royal Netherlands Academy of Arts and Sciences (KNAW). Hans’ ambition has always been to bring innovative image-based quantitation applications into the hands of the clinicians and clinical researchers worldwide. Hans now serves as Chief Scientific Officer, heading Applied Research and is the primary point-of-contact for internal and external clinical research trials.

The supervisory board

Dharminder Chahal

Dharminder Chahal is owner and managing director of Exponential B.V. in which capacity he acts as consultant to Van Herk Investments and companies in the Van Herk Investments portfolio. Furthermore he is CEO and co-founder of SkylineDx a company based in Rotterdam, The Netherlands, and developing diagnostic tests in oncology. Mr. Chahal has built an extensive network in the global life science industry and created a strong track record in supporting successful companies in their journeys. Currently the main investments in the portfolio are Galapagos, Zealand Pharma (Denmark) and BioInvent (Sweden). As a board member or advisor he has been and still is active for several European companies and funds in the field of life sciences. Mr. Chahal previously held various positions in investment banking and asset management, including Kempen & Co and Robeco. Mr. Chahal obtained a master degree in Business Economics (Erasmus University Rotterdam) and a master degree cum laude in Aerospace Engineering (TU Delft).

Carl J.G. Evertsz

Before joining Medis’ supervisory board in 2018, Carl Evertsz consulted Medis in the areas of business and corporate development and corporate finance. Carl has extensive experience founding, leading, and growing innovative medical imaging companies. He actively led international business, corporate and R&D developments, including M&A and technology acquisitions. Amongst others, he was CEO of MeVis Medical Solutions AG, which he led through a successful IPO in 2007, and CEO of MeVis BreastCare, a joint-venture with Siemens founded in 2001. As business angel he served 4 years at SCiLS GmbH as chairman of the advisory board and since 2014 at ScreenPoint Medical B.V. as a non-executive member of the board of directors.

Pieter de Wit

In various international roles, Pieter fosters the development of small and medium-sized businesses and scale-ups. Currently, Pieter is CFO at DPD Belgium and Luxemburg, which is doubling its revenues in three years and investing more than 60m€ in its infrastructure. At TNT, Pieter has also been responsible for the venture capital activities, holding various board roles in Europe and the US. Other past management roles include CEO of TNT Innight as well as director planning and control of TNT Group. As a consultant, Pieter has extensive experience in corporate strategy and M&A, among others at McKinsey & Co and Kempen &Co. He lectures on financial topics, e.g., in corporate valuation at the Rotterdam School of Management.