Dr. Niederman joined WPA in 1991, but has been practicing medicine since 1987. She attended Cornell University for her bachelor's degree, and then SUNY Downstate Medical School. Dr. Niederman completed her residency at Boston City Hospital. Although she originates from New York, Dr. Niederman now resides in Bedford.

Aside from traveling and reading, Dr. Niederman enjoys spending time with her children Jeffrey and Laurie. Among her favorite places to travel is Iceland. She also enjoys watching the Patriots.

Dr. Robertson was educated at Wheaton College in Illinois and Tufts University School of Medicine. He completed his internship and residency at New England Medical Center, interrupted by two years in the Public Health Service, and then joined Dr. Leader in 1970.

Dr. Robertson originates locally. He grew up in Lynn and now lives in Billerica. Dr. Robertson is married, has two children, and three grandchildren. He enjoys photography, off road jeeping, hiking, and mountain biking. Dr. Robertson still does a bit of running, but no longer participates in marathons.

Bernadette, or Berni as she is most often called, joined WPA in 1990. She attended the University of Massachusetts at Amherst for her bachelor's degree, and later received her master's degree from Boston College.

Berni enjoys spending time with her family. Her husband John is an attorney, son John Jr. attends Boston College, and her daughter Katie attends Emmanuel College. Berni's son Patrick is in middle school. In her spare time Berni likes gardening, as well as cooking. She is a Boston College football fan and also enjoys cross stitching.

Dr. Celandine was educated at Brandeis University and Tufts School of Medicine.  Before joining WPA in August 2011, Dr. Celandine was Chief Resident at Tufts Floating Hospital for Children.

Dr. Celandine is originally from the New Jersey shore but moved to Massachusetts in 1999.  He enjoys reading, and is especially interested in science fiction.  Dr. Celandine also enjoys running, swimming, and cooking.