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Mary Margaret Lewis, MD

Mary Margaret Lewis works in Richmond, Pennsylvania. The federal register lists them under Internal Medicine, Sleep Medicine. Their main specialty is internal medicine, critical care medicine. They have been on the register since 2005.

On the federal record

A registration is not a rating. NightWells does not score people. What the record shows is that this person is licensed to work in sleep care in Pennsylvania under this name and this number. A review cannot tell you that. This can.

From the federal provider register, read on 25 October 2026. To be removed from NightWells, use the update form and it is done without argument.