Dr. Murdock Head, who went to prison last year for conspiring to bribe two influential Democratic congressmen on behalf of his Airlie Foundation, has kept a low profile at Airlie's secluded conference center in Northern Virginia since being paroled in January.

"He's very, very low-key out there," says Arlington lawyer Frank W. Dunham Jr., who defended Head during two criminal conspiracy trials, in 1979 and 1981, in federal court in Alexandria. Head's first conviction was overturned by an appeals court.

Federal prosecutors charged that Head conspired in the mid-1970s to bribe then-congressmen Daniel Flood (D-Pa.) and Otto Passman (D-La.) in order to assure a steady flow of government grants to Airlie. Head served 10 1/2 months of a 4 1/2-year sentence at a federal prison camp in Alabama after the Supreme Court last year refused to review his conviction.

Today, Head's home is the spacious, wooded grounds of Airlie near Warrenton, about 40 miles west of Washington. Head, 60, is currently performing court-ordered community service as part of a four-year term of supervised probation. He no longer serves as Airlie's chief executive.

Head declined to be interviewed, but Dunham said the community service involves work with health-related agencies in Fauquier County, where Airlie is located. Head holds degrees in medicine, dentistry and law.

Virginia authorities revoked Head's medical license in 1979, after his first trial. When Head successfully appealed his conviction, his license was restored. Following his second conviction, however, his license was revoked again. His request for reinstatement was denied in July.

U.S. District Judge Oren R. Lewis, who presided over both trials, died in June of last year while Head was in prison.