Since 2011 he has hand-knitted a beanie as a gift for every single baby he has delivered.
His interest in knitting was sparked when he bought a book for his children one Christmas, called Hat Heads.
He started knitting a small hat just to practice. But the size of the hat was perfect for a newborn. And thus was a tradition born.
Sometimes the parents of the babies that he gives the beanies too repay him with gifts of yarn. He's always thrilled by the gift.
In the last four years, Dr. Sansonetti has hand-knitted over 200 hats!
The knitting Ob/Gyn takes a photo of every baby he gives a beanie too, and posts them on his blog, drbobsbabybeanies.