If he really committed fraud it is an ethics violation, if it was a mistake or his name really was stolen than it may or may not be. Contact the NY Bar association if you have a problem with the attorney. They will investigate your complaint and give the attorney the opportunity to respond. Ultimately they will decide if it is an ethics violation. You are wasting your time asking attorneys on this forum to determine if it is or isn't.
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As Nicklaus has suggested, a more proper forum to determine if it was an ethics violation would be through a state bar complaint. There just aren't enough facts here to be able to give a 'yes or no' because the standards are a little more fact-based and intensive on the analysis beyond "he should have known better."
Best of luck
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I agree with my colleague on the fact that you need to contact the bar association and have the attorney answer the complaint. The appointed committee will determine if there was any ethic violation.
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