sentences:  In the negotiations to form a government following the elections, he led the SPD delegation in the health working group and his co-chair from the CDU/CSU was Jens Spahn.From 2013 until 2019, he served as deputy chairman of the SPD parliamentary group under the leadership of successive chairpersons Thomas Oppermann (2013–2017) and Andrea Nahles (2017–2019).Appointed by Federal Minister of Health Hermann Gröhe, Lauterbach served as member of an expert commission on the reform of Germany’s hospital care from 2015 until 2017.