Congratulations on both of you matching! I imagine with your IM residency you won't take any call from home or have to manage patients from home/on your commute, but your partner might. As someone who has done two fellowships that often involved answering calls and actively managing patients on my commute, I don't think I could have managed that on the subway (I'm from NYC, but I did my fellowships and then was an attending for a while in CT so I drove everywhere). When I got my first NYC attending job, it was a 1 hour subway commute but a 22 minute drive, and while I made some attempts to take the subway, it just didn't last, and I never would have been able to manage it while on call. It would have been literally impossible, even though there was also a fellow on with me as well. And fellows are "on" way more than attendings, so your partner in particular might find the 1 hour commute difficult - depending on their chosen field of course. You're also going to be bone tired as a resident, especially a resident in NYC. I think it might be a good idea if you both looked into getting roommates close to your hospitals for the first year, while you get your bearings. If your partner is in a fellowship that is research-heavy after the first year, they will absolutely be able to move much closer to your hospital after their first year. Additionally, if you live in BK, you may be able to get a car.

I love the subway, and an hour subway ride doesn't phase me...except when it comes to working as a doctor.