Interviewed last year and was pleasantly surprised. May have had issues in the past, but seemed like recent changes have made significant inroads, most notably a new chair a few years ago from Cornell (Schwartz, per residents a strong advocate for the program) and increase in class size to 8/year. While all the residents seemed happy not overworked, the latter change should improve the call schedule to be on par with most programs in the country.
Given the reputation of NYP and Columbia in general with top 5-10 (?) residencies in every other field, it's hard to believe that the radiology program is as bad as AM/SDN make it out to be. Great path, high volume. Though definitely not NYU in terms of research (or MGH/UCSF/etc for that matter) there is top 20 NIH funding and multiple residents in the Holman research track. Similarly while definitely a step behind Cornell in MSK (HSS) and mammo (MSKCC), there is strong peds (CHONY), neuro (top neurosurgery/neurology), and arguably one of the top IR departments in the city (recent acquisition of Weintraub previous chair of IR at Mt Sinai and some young faculty including one I think from Northwestern). At the end of the day I personally ranked lower due to few ties in NYC area but I can't imagine that the education and overall experience would be that much different than the other name academic centers in big cities I interviewed at (Cornell, Northwestern, U of C, UCLA, UCSD, etc). Just my thoughts though.