Dr. Louis (Louie) Levinson, 67, a dentist in Washington who also played the violin, was found dead Tuesday at his home here. The D.C. medical examiner's office said he died of a heart attack.

Dr. Levinson, who was born in Washington, graduated from the old Central High School. He earned his dental degree at the University of Maryland dental school in Baltimore. He established a private practice in general dentistry in Washington and specialized in preventive and restorative dentistry. He continued his work until his death. He lectured in this country and in Mexico and Germany.

During World War II, Dr. Levinson was a captain in the Army Dental Corps, serving in Europe.

He was a member of the American Dental Association, the Academy of General Dentistry, the D.C. Science Study Club, the D.C. Dental Society and the Maimonides Dental Society. He was active in the League for Control of Dental Bacterial Disease.

As a musician, Dr. Levinson was a violinist who played both jazz and classical music. He was a violinist with the Jewish Symphony Orchestra at the Jewish Community Center in Rockville. He also had played with Charlie Byrd, Joe Venuto and other jazz musicians. He was a member of the D.C. Federation of Musicians.

His marriage to Sarah Levinson ended in divorce.

Survivors include one daughter, Sarah Levinson of Washington.

The family suggests that expressions of sympathy be in the form of contributions to the International Dental Health Foundation, P.O. Box 2157, Reston, Va., 22090, or to the United Jewish Appeal Federation, Israeli Emergency Fund, 6935 Arlington Rd., Bethesda, Md., 20814.