Windhoek (Eros): +264 (0) 83 330 5015 | Windhoek (Khomasdal): +264 (0) 83 334 1061 | Swakopmund: +264 (0) 83 334 1081


Dr Marthinus Kahl

Clinical & Radiation Oncologist

Dr Marthinus Kahl was awarded his MBChB degree from the University of the Free State in Bloemfontein, South Africa in 1995. He completed his Internship at the Universitas/Pelonomi/National Hospital complex in 1996 and went on to practice as a Medical Officer in the accident and emergency department of the Russells Hall Hospital in Dudley, England until January 1998. He worked as a Medical Officer in the Oncology department of the Universitas Annex Hospital in Bloemfontein, South Africa, for one year before becoming a Registrar in the same department. He completed his MMed. post-graduate degree in Radiation Oncology from the University of the Free State in 2002. Dr Kahl went on to work as a Consultant in the Oncology department of the Universitas Annex Hospital from 2003 until 2006 when he was promoted to Senior Specialist Oncologist in the same department. He fulfilled this role until 2010 when he was promoted to Head of the Clinical Unit/Principal Specialist. Dr Kahl joined the team at the Namibian Oncology Centre in January 2016.

Dr Tommy van Wyk

Clinical & Radiation Oncologist

Dr Tommy van Wyk graduated with an MBChB degree from the University of Stellenbosch, South Africa, in 2001. He completed his medical Internship in the Katutura State Hospital in Windhoek, Namibia, the following year and went on to build a successful private practice as a General Practitioner in Windhoek until December 2013. During his years as a G.P. Tommy also qualified as an Aesthetic Medicine practitioner, completing various diplomas and certificates in the United Kingdom, the U.S.A. and South Africa.In January 2014 Tommy pursued his passion for Oncology and started working as a Registrar in Medical & Radiation Oncology at the University of Stellenbosch School of Medicine, Tygerberg in Cape Town, South Africa. Tommy qualified as a Clinical and Radiation Oncologist through the Colleges of Medicine of South Africa in December 2017 and joined our team at NOC.Tommy also performs stem cell transplants on a regular basis and is an affiliate of the Cell Surgical Network

Dr Sybil Eksteen

Clinical & Radiation Oncologist

Dr Sybil Eksteen joined the team at NOC in May 2018 as a Clinical and Radiation Oncologist. Dr Eksteen graduated from the University of Stellenbosch, South Africa, with an MBChB in 2004 and then with an MMed in Radiation Oncology, as well as an FC Rad (Radiation Oncology) from the Colleges of Medicine South Africa in 2012. She worked as an Oncologist in private practice with Dr Visser, Loots and partners in Bellville, Cape Town until April 2018.

Dr Laina Iiyambo

Clinical & Radiation Oncologist

Dr Laina Iiyambo completed her undergraduate degree in Medicine at Saratov State Medical University in 2010 and worked as a Medical Officer in the Obstetrics & Gynaecology department of the Windhoek Hospitals Complex for one year before transferring to the Oncology department in 2013 for 2 years. She studied an M.Med in Radiation Oncology through the University of Stellenbosch and FC Radiation Oncology through the College of Medicine South Africa, completing both in 2019. Dr Iiyambo joined the Radiation Oncology department at the AB May Cancer Care Centre at Windhoek Central Hospital in January 2020 and our team at NOC under limited private practice in February 2020. She is a keen advocate for cancer patients and dedicated to furthering oncology care in Namibia.

Dr Mtabeni Jemu

Clinical & Radiation Oncologist

Dr Mtabeni Jemu was awarded his Master of Medicine in Radiation Oncology Degree from the University of Cape Town in 2017. He is also a Fellow of the College of Radiation Oncologists of South Africa. Dr Jemu has been involved in cancer care since 2012 across hospitals in Malawi, South Africa and Namibia. He has a special interest in early diagnosis and the establishment of oncology services in Southern Africa. Dr Jemu joined the team at NOC in Windhoek in June 2021 and visits Ondangwa regularly to assist patients in the northern regions of Namibia.

Dr Mariëtte Rothman

Clinical & Radiation Oncologist

Dr Mariëtte Rothman joined the team of Clinical and Radiation Oncologists at the Namibian Oncology Centre in March 2023, having completed her MBChB at the University of Stellenbosch in 2011 and her MMed in Radiation Oncology from the University of the Free State in 2019. Dr Rothman worked in the Universitas Hospital's Annex Oncology department before moving back to her hometown of Windhoek in late 2022. She is a compassionate, holistic medical practitioner who prioritises her patients' needs during their treatment.


Dr Lilian Gesami-Steytler

Paediatric Oncologist

Dr Lilian Gesami-Steytler became the first Paediatric Oncologist in Namibia after graduating with a sub-specialist Certificate in Medical Oncology from the College of Paediatricians of South Africa and the University of Stellenbosch's Department of Paediatrics and Child Health, Paediatric Haematology/Oncology in 2018. Prior to her studies in Paediatric Oncology, Dr Gesami-Steytler worked as a Paediatrician in the Ministry of Health and Social Services in Windhoek and ran a successful limited private practice at Rhino Park and Lady Pohamba Private Hospitals. She also previously worked as a part-time lecturer for the University of Namibia's School of Medicine, lecturing in paediatrics and child health and was chairperson of the Infection Control team at Rhino Park Private Hospital. Dr Gesami-Steytler completed her MBChB through the University of Nairobi in 2005 and later went on to specialize in Paediatrics at the University of the Witwatersrand, qualifying in 2013. Dr Gesami-Steytler has had intensive training in Haemophilia, bleeding and thrombotic disorders as well as infectious diseases in children and completed an MSc in Infectious Diseases through the long-distance academy of the University of London's London School of Hygiene and Tropical Medicine. She continues to work as a consultant Paediatric Oncologist at the Ministry of Health and Social Services in Windhoek and runs a limited private practice from the Namibian Oncology Centre.


Marian Steyn

Occupational Therapist

Marian Steyn is a born Namibian that graduated in 2018 with a B. Occupational therapy Degree from the University of the Freestate, and has been working in Private practice in Windhoek ever since. She was drawn to Paediatrics, Mental Health as well as Physical Rehabilitation prior to joining the NOC team.She is driven to provide patients with a holistic approach to oncology treatment, in line with vision of NOC by improving quality of life, so that peoples' lives will be as comfortable, independent and productive as possible. Within her profession, she will focus on maintaining, restoring, or creating a match, beneficial to the individual, between the abilities of the person and the demands of her/ his challenges.Because people with cancer can experience very rapid changes in their illness and care setting, she will be particularly responsive to their changing needs, together with the rest of the staff of NOC.


Marius Visser


Marius Visser is the driving force behind VISSER BIOKINETICS. His services include rehabilitation and exercise therapy as it relates to cancer, orthopaedic conditions, chronic disease management, neurological disorders, corporate wellness, speaking events and workshops. Biokinetics is not only about exercising with the goal of pain relief, strengthening, movement therapy or the likes of restoring general fitness and health. Marius describes his obligation as a frontline healthcare professional as to educate, teach, mentor, and transition patients to an all inclusive healthy lifestyle; optimising healthy living through a systematic program of care ranging from pain relief, rehabilitation, corrective exercise and play. Marius is registered with the Health Professions Council and NAMAF.