Columbia Fertility is good for bloodwork, but CCRM is never happy with the ultrasounds I do there. It may depend on the doctor, but the ones I've had only count the biggest handful and only use the largest measurement, not the average of both length and width. I'm also unsure about the quality of their ultrasound equipment. That said, they are very good about billing my insurance.
Shady Grove is great in terms of the quality of ultrasounds, but they are unhelpful about billing my insurance and struggle to get me the proper paperwork to do it myself. And even if I self-file, my insurance will only pay Shady Grove. Then I have to collect from Shady Grove, which means time-consuming phone calls.
I've also used Labcorp and Quest for bloodwork, but you have to get there early in the morning to ensure that the STAT results come back in time.