S.F.
J.,
I highly recommend Southborough Medical (Southborough office). My daughter is 4 and usually goes to their Westborough office as we live in Northborough. She's been seen on many occasions in Southborough by several of their pediatricians and they're all really great. They have evening and Saturday hours for urgent care in Southborough. The pediatricians are all very kind and take time to answer all our questions. I brought my daughter in once on a Saturday for "nurse maid elbow" and they let her just wander around and watched her try to play until her elbow went back into place (not painful for her).
I hope this helps. Good luck and congrats on your little one!