Pursuant to Rule 16(b)(4), a scheduling order can only be modified “for good cause and with the judge's consent.” See Fed. R. Civ. P. 16(b)(4). Here, Plaintiff has not complied with the Rule nor has he requested that any deadline, particularly the fact discovery deadline, be amended. To allow Plaintiff to continue to engage in fact discovery after the expiration of the April 6, 2016, discovery deadline renders all deadlines set forth in any court scheduling order meaningless. See Clarke v. Mellon Bank, N.A., 1993 WL 170950, at *6 (E.D. Pa. May 11, 1993). Because Plaintiff did not seek an extension of the discovery deadline, and waited almost four months after the expiration of the deadline to issue the subpoenas for non-party witnesses, the subpoenas must be quashed. See Reith v. Trevi Icos Corp., 2013 WL 5574467, at *1 (E.D. Pa. Oct. 9, 2013) (granting motion to quash where the plaintiff had ample time before the discovery deadline to seek discovery from known witness); Puritan Inv. Corp. v. ASLL Corp., 1997 WL 793569, at *2 (E.D. Pa. Dec. 9, 1997).

Defendants argue that sanctions of $300.00, the cost of preparing the instant motion, are warranted. The October 6, 2015 scheduling order stated that “[a]ny failure to comply with this Order may result in sanctions.” [ECF 23]. Rule 16(f) permits a federal court to impose sanctions where a party or attorney “fails to obey a scheduling or other pretrial order.” Fed. R. Civ. P. 16(f)(1)(C). A federal court, “[i]nstead of or in addition to any other sanction ... must order the party, its attorney, or both to pay the reasonable expenses ... incurred because of any noncompliance with this rule ....” Id. at 16(f)(2). Defendants have represented that their costs for filing the motion to quash was $300.00, a sum this Court finds to be reasonable. Sanctioning Plaintiff in this amount for his failure to comply with the scheduling order compensates Defendants for the costs they incurred to compel Plaintiffs compliance.