You do understand that the outbreak has exponential growth which has not peaked anywhere? Even NYC cases will likely double this week before their peak. If anywhere in fact is "over capacity" now then they'll be in much deeper shit than they are now, which is already pretty deep.
I'm not sure what you mean by "over capacity", either. If you're talking beds, ICU slots, and ventilators, maybe not yet. If you're talking lack of staffing, lack of PPE availability, general workload, then I think many are straining or over capacity now.