If you have a degree in a health science field, you might be eligible for a H1B visa, which allows you to work in a specialty occupation 

Depending on your specific qualifications and experience, you might be eligible for other visa types, such as an L-1 visa for intracompany transfers

To apply for a U.S. work permit in health science, secure a job offer first, then apply for an H-1B or O-1 visa, depending on your qualifications and expertise.