A U.S. grand jury yesterday accused five outcall massage operators of conspiracy and interstate racketeering in connection with what it described as a highly organized Washington-area prostitution ring that featured credit card service and beepers for its female employes.

The 11-count indictment, returned in Alexandria, charged the five purchased 10 telephone banks -- through which women allegedly were provided to customers in the District of Columbia and the Virginia and Maryland suburbs -- from former prostitution ring leader Louis Michael Parrish. Parrish was convicted on similar charges in March 1979.

Named in the indictment were the alleged owners of the 10 outcall services, Barry William Sheehan, 37, and Jerry David Evans, 35, and three assistants, Margolus Oxendine, 46, Chloe Ann Dyer, 38, and Barbara Lynn Dodson, 31. Dyer and Dodson were identified by an FBI spokesman yesterday as former employes of Parrish.

The FBI said all five have left their former addresses in Northern Virginia and that their whereabouts were unknown. District Court Judge Richard L. Williams yesterday signed bench warrants in Alexandria for their arrest.

According to the indictment, Evans and Sheehan bought the names of several established outcall services -- including Aquarius, Dial US, The Towers of Tranquility, The House of the Rising Sun and Circus Maximus -- from Parrish while Parrish's conviction was being appealed during 1979.

The FBI and federal prosecutors said yesterday these outcall massage establishments served as a front for the ring's alleged prostitution activities.

In addition, the indictment said, the two men operated telephone banks for purposes of prostitution at two leased locations in Alexandria's West End and one at 310-A 6th St. SE in D.C.

According to court documents, Sheehan, Evans, Dodson and Dyer organized and recruited a staff of masseuses, telephone operators, promoters and managers to run the business. Massage prices, the indictment said, ranged from $65 for a basic massage with clothed masseuse to $125 for an hour and a half "nude combination (with choice of bath or shower with masseuse)."

The court documents painted a picture of a tightly controlled business in which masseuses performed their duties under written contract with the management. Evans and Sheehan directed all masseuses to obtain beepers on which they could be called "for the purpose of providing prostitution," the indictment alleged.

The payroll for the District of Columbia office, the indictment said, was kept in an account at American Security Bank under the name Worldwide. Separate accounts under the names Edison Investments and Worldwide Escorts for purposes of handling BankAmericard and payroll funds were established at First American Bank in Virginia.

The indictment alleges that Sheehan, Evans and Dodson all were involved in the illegal transportation of women across state lines as part of the prostitution activities, a violation of the Mann Act.

Evans, Sheehan and Dyer also were accused in separate counts of traveling across jurisdictional boundaries in the ring's business dealings, which are prohibited by a U.S. law governing interstate travel in aid of racketeering.

The grand jury said the conspiracy apparently ended on Jan. 25, 1980, the date of a raid by FBI agents in Alexandria.

The maximum penalty on the conspiracy and racketeering charges is five years and/or a $10,000 fine, assistant U.S. Attorney Leonie M. Brinkema said yesterday. Violation of the Mann Act is punishable by up to five years in prison and/or a $5,000 fine if convicted.