Dr. Wanyoike is one of the leading cardiologist in Kenya; he has been practicing medicine for the last 40 years and cardiology for the last 38 years. He was previously working as a physician/cardiologist at Nairobi Heart Clinic, Karen hospital. He holds a MB ChB (1987) and Master’s degree in internal Medicine (1993), University Of Nairobi. He has studied cardiology in Netherlands, India, USA, and South Africa.

He was at one time the section head, cardiology, in the department of medicine at The Nairobi Hospital; he also runs his own private practice called Primecare Heart Clinic, a hospital based cardiology clinic in Nairobi Hospital. One of the premier cardiology centers in Kenya.