For those applicants seeking post baccalaureate guidance, I highly recommend the AAMC database. On the left panel you can filter by public or private, undergraduate or graduate, and special focus. For the latter, distinguishing whether you need a career changer or academic record enhancer program is critical.
For each individual program, you can search whether the curriculum awards a certificate of completion or a master's degree, affiliations like linkage programs, and, importantly, length of time to complete the program (from one year to 24 months).
Here's some additional information from the AAMC regarding post baccalaureate programs – what to look for, how the curriculum prepares students for medical school, etc.
