这个MPH，其实信息在网上都有的，

Medically qualified applicants:
Completion of 1 year of general clinical experience
Completion of 1 year experience in either public health, health administration or occupational health


Non-medically qualified applicants:
A good Honours degree or equivalent
Minimum 2 years’ working experience related to either public health, health promotion, health administration, occupational / environmental health or clinical research

International applicants whose native language is not English are required to have a minimum TOEFL score of 580 (paper-based) or 237 (computer-based) or IELTS score of 6.0.

http://www.med.nus.edu.sg/eph/MPH/_download/brochure.pdf

http://www.med.nus.edu.sg/eph/MPH/scholarshipsandfinancialaid.html

http://www.med.nus.edu.sg/eph/MPH/intro.html

http://www.med.nus.edu.sg/eph/MPH/program_requirements.html