Dr. Olawale Sulaiman, 49, is a professor of neurosurgery and spinal surgery and chairman for the neurosurgery department and back and spine center at the Ochsner Neuroscience Institute in New Orleans. He lives in Louisiana, but splits his time between the US and Nigeria, spending up to 12 days each month providing healthcare in the country of his birth - sometimes for free. Born in Lagos Island, Lagos, Sulaiman says his motivation comes from growing up in a relatively poor region. I am one of 10 children born into a polygamous family. My siblings and I shared one room where we often found ourselves sleeping on a mat on the floor," he told CNN. According to a report by the Global Health Workforce Alliance, Nigeria's healthcare system does not have enough personnel to effectively deliver essential health services to the country's large population. Sulaiman says he wants to use his knowledge to improve the healthcare system. In 2010, Sulaiman established RNZ Global, a healthcare development company with his wife, Patricia. The company provides medical services including neuro and spinal surgery, and offers health courses like first aid CPR in Nigeria and the US. RNZ Global has treated more than 500 patients and provided preventative medicine to up to 5,000 people in the US and Nigeria. RNZ Global also has a not-for-profit arm called RNZ foundation. The foundation, registered in 2019, focuses on managing patients with neurological diseases for free.