Tongsun Park is back.

Ten years after he was a key figure in the South Korean congressional influence-buying scandal, the flamboyant party-giver is in the Washington phone listings again. His new address is a house on Foxhall Crescents recently purchased for $634,000, but he has not paid off more than $10 million in back taxes and interest he owes the U.S. government.

Liens totaling $6.65 million in back income taxes are still pending against Park and one of his companies. The liens are from assessments dating back to the early 1970s, an Internal Revenue Service spokesman in Baltimore said. Another IRS official said interest charges would bring the total to more than $10 million.

Sheldon Cohen, a former IRS commissioner who was Park's tax attorney, said he didn't think Park had paid off the assessments because "they {IRS officials} took everything he had." The IRS seized two Washington houses, furnishings and cars at the time and sold them for about $1.5 million.

But the government did not pursue another Park company, Suter's Tavern Corp., owner of the $1.2 million George Town Club property on Wisconsin Avenue. IRS officials said they could not explain why Suter's Tavern's assets have never been seized. Park has long been the president and sole or majority stockholder of the corporation. Last month, Suter's Tavern bought the new house on Foxhall Crescents, according to D.C. land records.

Park has returned to Washington periodically over the past decade and hosted small parties at the George Town Club, which he founded with the aid of money from the Korean CIA.

An IRS spokesman in Washington declined to address the Park case specifically, but said any taxpayer could face criminal prosecution if the IRS determined he has assets here and is refusing to pay all or part of the back taxes and interest he owes.

Park's name does not appear on the deed for the new home, which is located in a subdivision of small mansions on the former Nelson Rockefeller estate. Norman Larsen, manager of the George Town club and vice president of Suter's Tavern, signed the deed.

Larsen said Park is still president and majority shareholder of Suter's Tavern. He declined to say whether the house was purchased for Park, but the phone for that address is listed in Park's name and a man who answered it said, "Mr. Park's residence." Park did not return the call.

Larsen declined to discuss Park's activities here. "I am the manager of a private club, and if Mr. Park or any member came here every day, I wouldn't tell you," he said.

Dagmar Burton, sales manager for Foxhall Crescents, told The Washington Post earlier this month in an article about upscale homes in the area that the subdivision's residents have incomes of "at least $300,000 a year" and include top corporation executives and bankers.

She said last week that Park "isn't in fact living there. Some of his servants are there, some cleaning people have been there." She said she could not discuss her buyers' business, but said she wasn't aware that Park owed the U.S. government millions of dollars.

In buying the house for $634,000, Park's corporation obtained a $675,000 mortgage from the National Bank of Washington. A spokeswoman for the bank said she could not comment on whether the bank was aware Suter's Tavern was controlled by Park or knew of his tax liabilities.

Park's tax problems stem from a lengthy fight that was decided by the U.S. Tax Court in 1982. He had challenged the IRS assertion that he was a resident and thus subject to U.S. tax when he was collecting millions of dollars in commissions, sanctioned by the Korean government, on rice imports from 1972 to 1975. Park was an active member of the Washington social scene at the time, hosting lavish parties for members of Congress.

He was indicted in 1977 on conspiracy and bribery charges for being an agent of the South Korean intelligence service and for making cash payments to members of Congress to ensure their continued support for U.S. aid to his country.

The charges were dropped in 1979 after Park returned to the United States and testified at congressional hearings and before federal grand juries. The investigations detailed hundreds of thousands of dollars he gave to members of Congress. One of them, then-Rep. Richard T. Hanna (D-Calif.), served a prison sentence.

Park's family has been in the news in South Korea recently because his brother Ken Suk Park, head of the country's largest shipping company, killed himself by jumping off a building while under investigation for embezzlement by tax authorities.

A Korean Embassy spokesman said Friday that Park is not in any legal trouble in South Korea. But he said a Park corporation there has filed for bankruptcy.