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 Doctors & Medical Staff


Dr. MARGRIET VAN UNEN-VAN ENK, M.D. MBBS, Family and Tropical Medicine


Dr. Margriet van Unen is from Holland, where she graduated at the Free University of Amsterdam. She is specialised in Family Medicine and Tropical Medicine. She has worked in rural hospitals in Sudan and Yemen for four years and in Nazareth Mission Hospital for six years. In 1991 she started Karen Surgery with Dr. Judy Shaw. She has done voluntary work in Nepal and Peru and has worked as an expedition doctor on several Classic Car/Volvo rallies in South America, Central America, USA , Canada, South East Asia, the Silk Route, Mongolia and Russia.




I love working with children, and as a GP year I am able to treat the child within the family. I find it very rewarding to provide antenatal care to a mother, see her new born for growth and development checks, and at the same time vaccinate the father and grandparents to ‘cocoon’ the baby. Before joining Karen Surgery I worked at Gertrude's Garden Children's Hospital and at Dr Colin Forbes' paediatric clinic in Nairobi. The Karen Surgery team approach allows me to work with our fabulous practice nurse Hannah Murimi, who has turned vaccinating young children into an art form; and with psychologists to assess and treat children with ADHD. 

I studied medicine at the University of Queensland and did my initial training in Australia. I have additional masters degrees in public health and tropical medicine from James Cook University, and in bioethics from Monash University.




Dr. Jackie Kitulu graduated from The University of Nairobi and has been a general practitioner for more than 20 years. In addition to her medical training, she has an MBA in Healthcare Management from Strathmore Business School. She is  the Immediate Past President (2016 -2020) of the Kenya Medical Association the umbrella professional association for doctors in Kenya. She also chaired the Kenya Medical Women’s Association( 2008-2012). Jackie is the 1st Deputy Governor of the Kenya Red Cross Society and sits on several other boards – National Hospital Insurance Fund (NHIF), the Kenya Medical Practitioners and Dentists Council, the Kenya Healthcare Federation (KHF) amongst others.She is the recipient of the Distinguished Service Award from the Kenya Medical Association 2019, Jacob’s Well Award for Women Living Deliberately 2017, Annual Best Communicators 2016, Africa Most Astounding Female Professional Award 2012 and OWIT (Organisation of Women in International Trade) Woman of the year 2010. 




Hannah has been the practice nurse at Karen Surgery since 2004. She has turned vaccinating young children into an art form, and is very good at getting blood samples from people with ‘difficult veins’. She is an expert in managing wounds, from dog bites to wounds sustained from complex trauma and diabetic ulcers.


Ultrasound Services now offered at Karen Surgery

Dr. Z. A. KAKA


Dr. Zohair Kaka is a Consultant Radiologist with 29 years’ experience in hospital and private practice.

He now offers Ultrasound services at Karen Surgery. This results in considerable convenience for patients in this locality, who can have these investigations done immediately and do not have to travel far for these services.

The Ultrasounds offered are

  • Abdominal/ urological
  • Pelvic/gynaecological
  • Obstetric
  • Small parts & Musculoskeletal
  • Regional
  • All Vascular and obstetric DOPPLER examinations.
  • Ultrasound guided interventions- FNAC, aspiration, drainage

Office Assistant 

Eunice Muthoni Mugo

Eunice has been a part of Karen Surgery almost since its inception. Eunice manages the filing and ensures that all waiting patients are made to feel welcome, comfortable and well cared for.