Dr. Stephan Billstein was born on May 19, 1937 in Philadelphia, Pennsylvania and passed away peacefully in Rockville, Maryland on August 4, 2024.  He is survived by his wife of almost 50 years, Susan Billstein (Gaithersburg, MD), three children; Laird Billstein (Hawthorne, NJ), Bevan Walker (Burlington, VT) and Sarah Billstein (Hirsch Isen) of Gaithersburg, MD, as well as his sister Marjorie Katz (Yarmouth, ME).  He is also survived by his beloved grandchildren, Asher Isen (age 12) and Eitan Isen (age 10) of Gaithersburg, MD.

Stephan was born in Philadelphia to his loving parents Beatrice and Sandford Billstein.  He adored his grandmother who often took him to the opera as he grew up.  This developed into a lifelong adoration of performing arts which he shared with his wife and passed on to his children and grandchildren.

Stephan attended Penn State for College and immediately enrolled in Jefferson Medical School in Philadelphia from which he graduated in 1967.  After completing his internship and residency at Los Angeles County General Hospital and in Reno, Nevada he enlisted as a Captain in the United States Army.

He went off and served in Korea in a MASH Unit helping both the citizens of Korea and fellow soldiers.  Upon his honorable discharge from the Army, he returned to San Francisco, California where he went on to complete two Master's Degrees at University of California Berkeley in Public Health and Epidemiology.

During this time, he worked under Governor Ronald Reagan as Director of Public Health for Sacramento County.  He also met his bride to be Susan and her young sons Laird and Bevan, whom he later adopted.  Susan and Stephan worked together in the 1970s, as volunteers raising money and providing medical care for the Free Medical Clinic at Haight Ashbury.  Following the birth of their daughter, Sarah in 1980, Stephan began working for the pharmaceutical industry where he remained for the rest of his career.

The family relocated to Franklin Lakes, NJ in 1984.  During his thirty or so years in Pharmaceuticals, Stephan helped to develop, market and gain FDA approval for many lifesaving and well-known medications.  Most notably, he played a major role in bringing Rocephin (Ceftriaxone) to market, which has saved countless lives.

In 2016 Stephan and Susan moved to Leisure World in Silver Spring, MD to be close to their grandchildren, Asher and Eitan.  Stephan lived out these eight years enjoying bridge games and social gatherings with friends he made in Leisure World.  Most of all, he treasured every moment with family especially his grandkids.

Stephan loved and cared for all those around with his whole heart and was an encyclopedia of knowledge.  His unwavering ability to care for others and devotion to learning are evident in the lives of his children and grandchildren.  We thank you Dad, Pop Pop, for all you have given.  We will continue to speak of you often and try to give selflessly of ourselves as you so often did.