N.Y. Comp. Codes R. & Regs. tit. 11 § 65-3.6 : INSURANCE — Policy and Certificate Provisions — Property and Casualty Insurance — Regulations Implementing The Comprehensive Motor Vehicle Insurance Reparations Act —3 - Claims For Personal Injury Protection Benefits —3.6 - Follow-up requirements

(a) Application for motor vehicle no-fault benefits. At a minimum, the insurer shall, within 10 calendar days, mail a second application for motor vehicle no-fault benefits, with the prescribed cover letter, to the eligible injured person or such person's attorney if, 30 calendar days after the original mailing, a prescribed application has not been completed and returned to the insurer. If the follow-up is sent to the applicant's attorney, a copy of the prescribed cover letter, marked "second notice," shall be forwarded to the applicant.
(b) Verification requests. At a minimum, if any requested verifications has not been supplied to the insurer 30 calendar days after the original request, the insurer shall, within 10 calendar days, follow up with the party from whom the verification was requested, either by telephone call, properly documented in the file, or by mail. At the same time the insurer shall inform the applicant and such person's attorney of the reason(s) why the claim is delayed by identifying in writing the missing verification and the party from whom it was requested.

N.Y. Comp. Codes R. & Regs. Tit. 11 § 65-3.6