Here is what I found on the DMV website:
New York DMV does not record out-of-state violations committed by NYS drivers in other jurisdictions, except for out-of-state alcohol or drug-related violations (e.g. DUI) and moving violations committed in Quebec and Ontario. Therefore, except for violations in Ontario and Quebec, points are not added to your NYS record for out-of-state violations.
However, if you fail to answer a ticket or pay a fine for a moving violation in any state except Alaska, California, Michigan, Montana, Oregon or Wisconsin, your NYS license will be suspended until the ticket is answered or the fine is paid. A driver from any state, except the six listed above, will have his or her license suspended for failure to answer a moving violation summons or pay a fine in NYS.
If you are convicted of an alcohol or drug-related driving violation in any state, your NYS license will be revoked for at least six months. Otherwise, except for convictions in Quebec or Ontario under special agreements, out-of-state traffic convictions are not recorded on NYS license records and do not carry points.
Out-of-state drivers ticketed in NYS should contact their home-state DMV about the affect of a conviction in NYS.