A second pre-answer motion to dismiss is alright if it is the first one to be decided on its merits

Chester Med. Diagnostic, P.C. v State Farm Mut. Auto. Ins. Co., 2009 NY Slip Op 52598(U)(App. Term 2d Dept. 2009)

“On November 21, 2006, plaintiff, a provider, commenced the instant action to recover assigned first-party no-fault benefits for a claim which was submitted to defendant on April 28, 2000. Defendant moved to dismiss the complaint on the ground that it was time-barred by the six-year statute of limitations. Plaintiff opposed defendant’s motion arguing that since this was defendant’s second pre-answer motion to dismiss, it was procedurally defective. The Civil Court granted defendant’s motion and dismissed the complaint. The instant appeal by plaintiff ensued.

A motion to dismiss a complaint pursuant to CPLR 3211 (a) may be made at any time before service of the responsive pleading is required but no more than one such motion shall be permitted (see CPLR 3211 [e]). Where, as here, the original motion to dismiss the complaint pursuant to CPLR 3211 (a) is not decided on the merits, a subsequent motion to dismiss pursuant to CPLR 3211 (a) does not violate the single motion rule set forth in CPLR 3211 (e)”

By the way, I was Respondent on this case.