Real Housewives of Beverly Hills Extortion Attempt?
TMZ has learned ... Nassif has obtained a restraining order against Roman Melikov ... claiming the Roman threatened him and and his family because he was unhappy with a recent schnoz job.
Now, sources close to Nassif tell us ... the doc believes Melikov tried to EXTORT him too ... AFTER the two sides had already worked out a settlement regarding the procedure.
Sources close to the situation tell us ... Nassif shelled out $3k to make Roman go away back in March 2011 ... and Roman accepted the deal.
But, we're told, Roman -- a self-proclaimed portfolio manager -- then changed his tune and told Nassif he would "have no choice but to do negative reviews" unless the doc either refunded the entire $26k bill or invested $400,000 with Roman's firm.
Nassif refused ... and instead threatened to sue Melikov for defamation.
Roman fired back at Nassif in an email ... telling him a lawsuit would be pointless because he has no assets and $82k in debts. more on this story
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