Our Team


Joachim Werr

Founder, CEO Medical Doctor and PhD at the Karolinska Institute, Stockholm, Sweden; Vice President at Investor AB, Investor Growth Capital, Stockholm, Sweden; A&E Consultant, Karolinska Institute; Engagement Manager, McKinsey & Co, Stockholm, Sweden joachim.werr@health-navigator.co.uk

Lawrence Petalidis

Chief Business and Innovation Officer for Health Navigator and PhD at University of Cambridge. Prior to this, Lawrence led innovation at Chelsea and Westminster NHS securing and funding some 20 digital health projects and collaborations.


Creenagh Williamson

Chief Nurse Officer. Demonstrated history of working in the hospital & health care industry. Skilled in Healthcare Management, and Managed Care. Strong operations professional with a Bachelor of Science (BSc) focused in Adult Health Nurse/Nursing from Kingston University. creenagh.williamson@health-navigator.co.uk 

Andries van der Watt

Chief Operations and Technology Officer. B.Eng (Mech), Project Management Professional (PMP), ITIL, with experience in running large global programmes and PMOs, IT Technologies (Software Development, ITIL, Service Delivery, Outsourcing), with 12+ years in healthcare industry globally. andries.vanderwatt@health-navigator.co.uk

Miguel Sá

People Manager. Senior HR Professional with 10+ years of experience. MSc International Management, Kings College London. BSc Human Resources Management, ISCTE Business School, Lisbon




Core Team

Eleitha Medina

Data Scientist MSc Data Science, City, University of London; BA Hons Economics and Minor in Finance, Richmond the American International University. eleitha.medina@health-navigator.co.uk      

Joseph Gallagher

Business Development Analyst. MSc. Entrepreneurship and Innovation, University of Edinburgh Business School. MA (Hons.) Politics and Sociology, University of Aberdeen. Previously worked for a variety of healthcare organisations in analytical and operational roles, including Cambridge University Hospitals, and a Clinical Commissioning Group.