The Group Executive Committee of Mediclinic and the divisional executive committees of its divisions in Switzerland, Southern Africa and the Middle East are committed to ensuring effective decision-making and strategy execution.

Dr Ronnie van der Merwe

Group Chief Executive Officer

Nationality: South African

Appointed: June 2018

Key strengths and experience

  • Strong track record of leadership and management within private sector healthcare 
  • Experience in strategy, organisational development, clinical performance, technology adoption and quality management
  • Qualified anaesthesiologist with expertise in intensive care, acute and chronic pain, and trauma, as well as managed healthcare principles and reimbursement models

Ronnie joined Mediclinic in 1999 and served as Chief Clinical Officer before his  appointment as Group CEO. He was an executive director of Mediclinic International Ltd from 2010 up to the reverse takeover of Al Noor Hospitals Group plc.

Ronnie has extensive knowledge of Mediclinic’s operations. He established the Clinical Services, Clinical Information, Advanced Analytics, Health Information Management and central Procurement functions at Mediclinic, driving growth.


He holds an MBChB (Stellenbosch University), a DA (SA) (College of Anaesthetists of South Africa) and the FCA (SA) (Fellowship of the College of Anaesthetists of South Africa), and has completed the Advanced Management Program (Harvard Business School).

Jurgens Myburgh

Group Chief Financial Officer

Nationality: South African

Appointed: August 2016

Key strengths and experience

Over 20 years’ broad financial and accounting experience

As a qualified chartered accountant with extensive investment banking experience, Jurgens takes a balanced approach to financial management and growth. Since joining Mediclinic as Group CFO, he has driven a structured approach to capital allocation with an emphasis on free cash flow and ROIC. Previously, he served as CFO at Datatec Ltd. He qualified with KPMG and, in 2001, joined The Standard Bank of South Africa Ltd, where he was appointed as Head of Mergers and Acquisitions in 2009.


He holds a BCom Hons in Accounting (University of Johannesburg) and is registered with the South African Institute of Chartered Accountants (‘SAICA’).

Gert Hattingh

Group Chief Governance Officer

Nationality: South African

Gert joined Mediclinic in 1991 as Group Accountant. He served in various management positions across the Group and was appointed as Company Secretary in 2000 and Group Services Executive in 2011. Subsequent to the acquisition of Al Noor Hospitals Group plc in February 2016, he holds the position of Group Chief Governance Officer.


BAcc Hons (Stellenbosch University), Advanced Management Program (Harvard Business School), registered with the SAICA.

Dr Dirk le Roux

Group Chief Information Officer

Nationality: South African

Dirk joined Mediclinic in August 2014 as the Group ICT Executive and was appointed to his current position of Group Chief Information Officer on 11 August 2014. Prior to joining Mediclinic, he served in various managerial roles, including as Managing Director of ThinkWorx Consulting, Chief Information Officer at Media24 (Pty) Ltd, General Manager of IT Strategy and Risk at Absa Bank Ltd and Head of IT at the Development Bank of Southern Africa. 


DComm in Informatics (University of Pretoria), MBA cum laude (North-West University), PgDip in Data Metrics (Unisa), BEng in Civil Engineering (University of Pretoria).

Magnus Oetiker

Group Chief Strategy Officer

Nationality: Swiss

Magnus worked for Hirslanden in various management positions from 2000 to 2016. He served on this division’s Executive Committee from 2008 in various roles, while also taking responsibility for HR management, funder relations and strategy. During his last two years at Hirslanden, he acted as Chief Strategy Officer. In 2016, he joined a family-owned company in Switzerland with interests in healthcare, real estate and catering as CEO. In February 2018, he was appointed Group Chief Strategy and Human Resources Officer, which role was subsequently refined to focus purely on strategy.


BSc in Business Administration (Zurich University of Applied Sciences), Executive MBA (University of Zurich).

Koert Pretorius

Group Chief Operating Officer

Nationality: South African

Koert joined Mediclinic in 1998 as the Regional Manager for the central region of Mediclinic’s operations in Southern Africa and in 2003 took on the role of Chief Operating Officer of the Mediclinic Group. He was appointed CEO of Mediclinic Southern Africa in 2008 and served as an executive director of Mediclinic International Ltd from 2006, up to the acquisition of Al Noor Hospitals Group plc. Subsequent to 1 April 2022, he holds the position of Group Chief Operating Officer.


BCompt in Accounting Science (University of the Free State), Master of Business Leadership (Unisa).

Dr René Toua

Group Chief Clinical Officer

Nationality:  South African

René is a medical practitioner with extensive experience in private and public healthcare. She started her career in primary healthcare, established a geriatric private primary care practice and worked in emergency medicine, including at an academic trauma unit, for several years. She joined Mediclinic in 2006 and held the positions of Regional Clinical Manager, and Clinical Data and Information Manager for Mediclinic Southern Africa. Subsequently, she served as the Group General Manager: Clinical Performance. She sits on the Executive Committee and is vice Chair of the board of trustees for Remedi, the in-house medical aid scheme. She was appointed Group Chief Clinical Officer with effect from 1 July 2018.


MBChB (Stellenbosch University), MPhil in Emergency Medicine (Patient Safety and Clinical Decision Making) (University of Cape Town), PgCert in Project Management (University of Stellenbosch Business School).

Dr Tyson Welzel

Group Chief Innovation Officer

Nationality: German and South African

Before joining the Group, Tyson fulfilled clinical and academic roles acquiring extensive experience in private and public healthcare. He is also a founder of the CoE in Emergency Medicine in Bern. In 2016, he joined Mediclinic, taking responsibility for clinical governance and health technology assessments, before being appointed as Group General Manager: Innovation in 2019. He subsequently joined the Group Executive Committee in October 2020 as Group Chief Innovation Officer. 


MBChB (University of Cape Town), European Masters in Disaster Medicine (University of Eastern Piedmont), MMedSc in Clinical Epidemiology (Stellenbosch University), Masters in International Management (McGill University).

Dr Daniel Liedtke

Chief Executive Officer: Hirslanden

Nationality: Swiss

Daniel joined the Hirslanden Klinik St. Anna in Lucerne in 2001. He held various clinical and managerial positions at Hirslanden prior to his appointments as Hospital Manager of Klinik Hirslanden in 2008 and as Chief Operating Officer of the Hirslanden Group in 2015. In 2019, he was appointed as CEO.


Doctor of Business Administration (Charles Sturt University), Master of Health Administration (FHS St. Gallen), DO in Osteopathic Medicine (Swiss Conference of Cantonal Health Directors), BSc in Physiotherapy (Swiss Confederation), Diploma in Car Electronics (Swiss Confederation).

Greg van Wyk

Chief Executive Officer: Mediclinic Southern Africa

Nationality: South African

Greg joined Mediclinic Southern Africa in 2013 as Chief HR Officer following many years in leadership positions across the fields of human resources and strategy. Prior to Mediclinic, he served as Group HR Director at BMW South Africa, led Human Resources and strategy at Land Bank, and held the position of Associate Director in Human Capital at Deloitte. He was appointed as Chief Executive Officer of Mediclinic Southern Africa in April 2022.


Bachelor’s degree in Law (University of Johannesburg), Diploma in Education (Bechet, now Edgewood).

Hein van Eck

Hein van Eck

Chief Executive Officer: Mediclinic Middle East

Nationality: South African

Hein joined our Southern Africa operations in 2005, moving to the Middle East in 2014. In 2016, he was appointed to the Middle East Executive Committee as Chief Strategy Officer. He has held many leadership positions over a healthcare career spanning more than 20 years, with local and global healthcare experience in the fields of strategy, operations and growth.


BSc Actuarial Science (Stellenbosch University), qualified actuary (Institute and Faculty of Actuaries, London; Actuarial Society of South Africa)