Merrimack Pediatrics

(603) 429-3155Schedule an Appointment at this Practice

Monday - Friday: 8:00am - 5:00pm

Building a healthy foundation for your child is our priority.

Caring for children is our profession and our passion. Our dedicated team provides comprehensive health care in a friendly environment to help keep your child healthy and happy. We also offer Immediate Care for urgent needs, lab, x-ray, and more on site within Merrimack Medical Center.


Feb 12, 2016
Google William Lero, MD, FAAP
Love love love this doctor, he is SO good with the toddlers(very engaging). I actually started out with one pediatrician we had to see a doctor on the weekend and Dr. Lero happened to be the one on call. He was so amazing we just continued to go to him. He is now in Merrimack and about a half hour longer to get to which is a drag but he is worth the extra travel! I am a more homeopathic type of Mom (amber necklace etc) and Dr. Lero is wonderful with that type of parenting he never pushes med's and I really like that. He didn't push me to feed solids earlier than 6 months even though a lot of doctors recommend 4 months.
Our practice is a Foundation Medical Partners’ Patient Centered Medical Home.