Online scheduling available 24/7 through MyChart!

We Work Very Closely Together

Each of our clinical staff members keep abreast of progress in pediatrics by regularly making rounds at Children’s Hospital and Mass General Hospital for Children. Continuing contact with a variety of researchers, and attendance at many seminars & conferences.

We believe that in order to give quality care, a group practice needs to be more than individual providers sharing office space. Our goal is to be cohesive in practice & philosophy, so that when you see any one of us, you can be sure you are getting the benefit of our collective expertise.


Elisabeth B. Winterkorn, M.D., F.A.A.P.

General Pediatrics

Daniel A. Summers, M.D., F.A.A.P.

General Pediatrics • Adolescent Medicine

Elana Y. Poulter, M.D., F.A.A.P.

General Pediatrics

Please sign up with a MyChart account to communicate through our patient portal.

Sharon Lewin, M.D., F.A.A.P.

General Pediatrics

Jacquelyn S. Psoinos, MSN, CPNP-PS, PMHS

Pediatric Nurse Practitioner

Marnie P. Burton, MSN, CPNP

Pediatric Nurse Practitioner

Christina Connelly, MSN, CPNP

Pediatric Nurse Practitioner

Emily Freeman, MSN, CPNP

Pediatric Nurse Practitioner

Donna J. Graham, Ph.D

Behavioral Health

Are you expecting?

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Important things you need to know about childhood immunizations

Medication Dosage Guide

Learn more about the medications you are taking.