By definition, a regular master's program is two years and absolutely requires a thesis. The main purpose to doing a master's is for the research and the resulting thesis proposal. The classes are just gravy. If you mean a post-bac master's program, there are some of those but not sure if in your specific area. I went to BU for my masters and am finishing up my thesis now. You have the option of a library thesis which a lot of people are able to complete in the span of a couple of months (no lab work required). Otherwise, I know Rosalind Franklin (Finch) has a non-thesis master's program (post-bac). Runs from August through May I believe and you get your M.S.