Louis Greenspan, 57, a pharmacist in Washington for more than 25 years, died at Providence Hospital Sunday following a heart attack.

Mr. Greenspan was stricken as he was opening his store, College Pharmacy Inc., at 2815 7th St. NE near Catholic University. He and his wife, Lillian, had operated the store since they opened it in 1952.

Mr. Greenspan also operated the D.C Vet Supply Co. from the same location. That business supplied medicines and equipment to veterinarians.

Mr. Greenspan was born in Antwerp, Belgium, while his parents were on trip to Europe. They returned to their home in Buffalo, N.Y., while he was an infant and he grew up there. He graduated from the State University of New York in Albany in 1943, and then joined the Army Air Corps.

He served as a navigator in the South Pacific during World War II and earned the Air Medal.

He came to Washington about 1947 and graduated from the George Washington University School of Pharmacy in 1951. He established his business the following year.

He was a member of the National Association of Retail Druggists.

Besides his wife, of the home in Hyattsville, survivors include a son, Jack A., also of the home; two sisters, Rose Mushlin, of Hollywood, Fla., and Faye Schwartz,, of Buffalo, and a brother, Gerald, also of Buffalo.