http://www.sassyscrubs.com
They have a lot of baby prints if you search around the different categories. Their fabric selection is constantly changing as it's a private company that buys bolts of fabric and when they run out, they just buy new stuff.
Most of their best "baby" style prints are under the "vintage" option when it comes to fabric choices. The stuff under "babies & kids" isn't nearly as cute as the vintage baby patterns. You really have to search around that site a bit, but it's worth it for unique scrubs!