637 Washington Street • Suite 202 • Brookline MA 02446

(617) 232-2811

(617) 383-8178


About the Office

Welcome to the office of Drs. Roth, Rotter, Laster and Ivanova.

Picture of Sally S. Roth, MD

Sally S. Roth, MD

Dr. Roth is a graduate of Smith College and Case Western Reserve Medical School. She trained at Yale New Haven Hospital, completed a fellowship in Ambulatory Pediatrics and was on the Pediatric Faculty at the University of Florida. She is Board Certified in Pediatrics.

Picture of Sari J. Rotter, MD

Sari J. Rotter, MD

Dr. Rotter began her career on staff at Boston Children's Hospital prior to entering private practice. She is a graduate of Simmons College, University of Wisconsin School of Medicine and Public Health, trained at Boston Medical Center and Boston Children's Hospital and completed a fellowship at Boston Children's in Developmental Pediatrics. She is Board Certified in General Pediatrics.

Picture of Susan B. Laster, MD

Susan B. Laster, MD

Dr. Laster began her career working for 2 years at MGH Revere Healthcare Center and subsequently joined Drs Roth and Rotter. She is a graduate of Harvard College, Boston University School of Medicine, and trained at Massachusetts General Hospital where she also spent a year as Chief Resident of the MGH Pediatric Service. She is Board Certified and continues to maintain her Board Certification. She is also on the Board of Directors of the Pediatric Physicians Organization of Children’s Hospital.

Picture of Magdalena D. Ivanova, MD

Magdalena D. Ivanova, MD

Dr. Ivanova is a board-certified pediatrician who joined Drs. Roth, Rotter, & Laster in 2023. She received her Bachelor of Arts degree in Biology from the University of Chicago and her medical degree from Harvard Medical School. She completed her residency training with the Boston Combined Residency Program at Boston Children’s Hospital and Boston Medical Center. In her free time, she enjoys exploring the outdoors, gardening, and spending time with her family and cat Zara.

Our Office Staff

Linda Diaz

Since 1991

Picture of Linda Diaz

Melissa Moroney-Barzey

Since 1999

Picture of Melissa Moroney-Barzey

Idalia Peña

Since 2022

Picture of Idalia Peña

Website Design © 2023 James Little

Content © 2023 Sally Roth, Sari Rotter, Susan Laster, Magdalena Ivanova

Photos by Sari Rotter & Bill Gardner


Drs. Roth, Rotter, Laster and Ivanova are preferred Boston Children's Hospital Community of Care members.