Unfortunately, this is true of churches too. The need for medical workers varies between countries and even within a country. There are remote areas without anything resembling reasonable medical care. There are existing Lutheran hospitals that are badly understaffed. Finally, there are teaching hospitals up to the level of full universities, like Kilimanjaro Christian Medical College.
Many unmet needs require dedicated medical professionals.
Healing and teaching are ministries together with evangelism and pastoral care. Paul wrote to the Ephesians that everyone should use the gifts received from God in God's service. Our professional education and experience are to be held as a sacred trust. In our 22 years as medical missionaries we have experienced that patients and their relatives notice that Christ through his servants is caring for them. We also have opportunity for personal counseling and can spread the word in Bible studies and preaching.