We're relatively new to Cambridge, and needed to find a new Pediatrician for our 3yo DS. After much searching, interviews and talking with other moms at La Leche, we came across Dr Rajee Joyce in Arlington. She has an excellent manner - very laid back, cheerful and attentive to our son. Her practice is small, but she has good hours including an open hour first thing in the morning when you can come in without an appt. She also gives priority to kids who are sick. She shares coverage with several other drs in the area during off-hours and has admitting privileges at Children's Hospital in Boston.
She seems open to limited/delayed vaccing, as well as AP and extended breastfeeding. Her husband is the office manager, which is kind of nice. They have a good working relationship.
Here's her info if you are interested:
366 Massachusetts Ave Ste 101B
Arlington, MA 02474