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Meet our staff

Medical Advisor, Viva in Kenya
Dr. Theophilus Wangata

Medical Advisor, Viva in Tanzania
Dr. Nancy Matillya

Medical Advisor, Viva in Tanzania
Dr. Herman Massawe

Medical Doctor and Burundi Representative
Dr. Louise Riziki

Consultant Nutritionist
Japheth Winstone

Medical Advisor &Consultant for Europe
Dr. Jonathan Mwambire

Medical Advisor, Viva in Kenya

Dr. Theophilus Wangata

Dr. Wangata is a General Physician with vast experience in weight management. He has travelled widely and believes that people should be able to access healthcare wherever they are. That’s why he believes Viva Serenity is helping improve access to healthcare, whether local, inbound or outbound.

Medical Advisor, Viva in Tanzania

Dr. Nancy Matillya

She is a family Physician based in Dar es Salaam, Tanzania. Serving mainly a Clientele of geriatric patients and patients with other non-communicable diseases such as type 2 Diabetes, Hypertension, asthma, Chronic Obstructive Pulmonary disease etc.

Medical Advisor, Viva in Tanzania

Dr. Herman Massawe

Spine fellow
Orthopaedics and traumatologist surgeon
Lecturer at KCMUCO, Department of Orthopaedics and traumatology
Kilimanjaro Christian Medical Centre
He is a trained Orthopaedic Surgeon trained in Moshi, Tanzania. He did fellowship in spine Neurosurgery training in France, Netherlands and Switzerland. Lecturer at Kilimanjaro Christian Medical University College.
He is the owner and Director of Careplus Health Centre and Gymus Specialist Polyclinic in Moshi, Tanzania

Medical Doctor and Burundi Representative

Dr. Louise Riziki

A medical doctor and passionate with humanitarian work. She has 4 years experience working with refugees. She is an activist and a volunteer at Action Aid Burundi.

Consultant Nutritionist

Japheth Winstone

Japheth is the Consultant Nutritionist in charge at Viva Serenity: In this role, Japheth offers Nutrition counselling for the patients before they undergo weight management surgery, Diet modifications after surgery, and post surgical dietary management of the patients.
Japheth Winstone is a Certified Clinical Nutritionist/Dietician and a member of the Kenya National Union of Nutritionists and Dieticians (KUNAD). He is a holder of a Bachelor of Science in Food, Nutrition, and Dietetics from The Kenyatta University School of Public Health.
Japheth is passionate about wellness and is thus driven to further connect others with additional information and resources to promote health and wellness.

Medical Advisor &Consultant for Europe

Dr. Jonathan Mwambire

Dr Jonathan C Mwambire is one of our advising consultants based in Germany on a voluntary basis. He studied his bachelors of medicine and bachelors of surgery at the University of Nairobi completing his studies in 2006. He then went on to further his education in Germany at St. Franziskus Hospital in Flensburg, Germany ( an affliate of University of Schleswig Hosltein) attaining the german equivalent of consultant in internal medicine ( Facharzt Innere Medizin).
Dr. Mwambire also worked with the Ministry of Health in Kenya as well as Gertrude’s Garden Children’s Hospital.

Fitness Consultant

George Ooko Wafula

He is Specialized in weight loss, Strength training, Sports Rehabilitation and Conditioning for athletes. A Personal and a group fitness trainer with 20years experience. He is also the Head coach for Viva FC, Viva Serenity’s Football Club

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