http://www.waldenu.edu/Degree-Programs/Doctorate/PhDin-Public-Health.htm - If you want to move up in your career in public health then a Ph.D. in Public Health should be on your list. If you decide to get your public health Ph.D., there is a new and easier way to earn it. You can take classes from schools that offer public health Ph.D. programs online. You just need to make sure the online school you choose can offer accredited Ph.D. in public health online courses.