Since the Polaris is intended to be a "self-sustaining combat platform" and "capable of extended deployment without resupply" does it have a medical facility or Captain's quarters?
Cloud Imperium
I can confirm that both a captains quarters (and secondary quarters for the fighter pilot or second in command) and also a small medical bay are indeed present on the Polaris. In addition to this, the Polaris has capacity for a large stockpile of 24 Torpedoes, as well as another 4 ready loaded for launching.
starfarer.space · Q&A: RSI Polaris - Part II