What is the best specialty for a Muslim doctor that combines benefit to Muslims, ample income, and a contribution to scientific research?

When choosing a medical specialization, it is advisable to consider the following: selecting a specialty where exposure to 'awrah (private parts) is minimal, one that the individual enjoys and can excel in, and one that does not consume all of one's time but rather leaves ample room for acquiring knowledge and engaging in da'wah (inviting to Islam). If these criteria conflict, then the interest of religion and the soundness of the heart must be prioritized. Muslims can be benefited through any specialization by excelling in one's work, offering advice to patients, and caring for the poor. The field of scientific research is important and recommended for those who have the desire and ability, although direct medical treatment is more beneficial, especially if accompanied by inviting patients to Allah and reminding them of Him.