Peter Dahl, MD

A message from Rick Mankin MD, President, Main Line HealthCare

Dear MLH Community;

I am so sorry to share with you the unexpected passing of our colleague, Peter Dahl MD, this past Friday evening, after he experienced a sudden catastrophic illness at home. Peter was a highly respected endocrinologist at Riddle Hospital, and started our MLHC practice there “from scratch” over four years ago. He was genuine, caring, and talented, and quickly became a favorite physician on the medical staff. He was highly regarded, not only by our referring physicians but by our staff, and the thousands of patients he touched. His loss will be deeply felt by all that he touched.

He is survived by his wife Katherine (Katie) Lackritz MD, and their two children Jeremy and Magnolia. In speaking to Katie, she wanted me to know how thrilled he was being at Main Line Health, as he felt valued, well supported, and intensely proud of what he had accomplished with us. She told me that it was the happiest he had ever been, and how excited he was for the future of his practice. She made particular note of how much he loved his patients, and how much he valued the privilege to care for them.


Memorial Information


Saturday, December 14, 2019 at 4:30pm, followed by dinner:

Unitarian Universalist Church of Delaware County

145 West Rose Tree Road, Media, PA 19063

Memorial Gathering at Home:

Sunday, December 15, 2019 at 11:00am. Katie and her family will receive visitors 11:00am-2:00pm at their home:

805 Vauclain Road, Bryn Mawr, PA 19010.


Sunday, December 15, 2019 at 4:45 pm.

Katie and her family will receive visitors 4:45pm-6:45pm, with a prayer service starting at 5pm.

805 Vauclain Road, Bryn Mawr, PA

In lieu of flowers or food, please consider supporting Katie and the children as they navigate their new reality or donating to the Land Trust of Cape Cod in Peter’s memory.

If you have favorite photos of Peter, please send them to

Thank you again for your outpouring of love and support.


Peter’s Family

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