"I’m in New York and I’m interested in getting my medical marijuana card."
A good site is www.pubmed.com
This is where you can find peer-reviewed clinical studies. You can type in the search box at the top the condition plus cannabis and see all the studies done. Of course, most all studies have been done with mice or rats.
ProjectCBD.org has a condition list on their website which lists all the articles and studies done on CBD and various conditions.
PiantaTinta
This free PDF download is an extensive summary of research describing the use of cannabis to treat symptoms for many disease states and conditions. https://www.nap.edu/catalog/24625/the-health-effects-of-cannabis-and-cannabinoids-the-current-state.
Also https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3579248/
and https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2755639/
chrisd