Should I tell my primary care physician I’m considering cannabis as an alternative treatment to traditional treatment (i.e. prescription or over-the-counter medications)?

Absolutely!  As your doctor, he or she needs to know all of the medications you plan to take or are already using in order to avoid any counter-indications or problems resulting from ingesting different medications that could cause issues for you.  For example, taking certain medications together can cause many problems, including undesirable side effects and even death.