I discovered this state discrepancy also. In NJ I was scheduled routinely for an ultrasound with my mammograms due to dense breasts. Moved to MA, they won’t schedule an ultrasound until after they see something they don’t like on a mammogram. Took me a few months to find this out, the imaging place just wouldn’t schedule an ultrasound but never told me why. Of course, once I got the mammogram, the radiologist determined I did need an ultrasound on my left breast. Now, in MA I am on a regular schedule for ultrasounds on that breast only.