MEMORANDUM AND ORDER
DONALD W. BOSTWICK U.S. MAGISTRATE JUDGE
Defendant, Nash Oil & Gas, Inc. (Nash) has filed a Motion to Quash Records Subpoena Issued to Platt, Sparks & Associates, Consulting Petroleum Engineers, Inc., along with a supporting memorandum brief. (Doc’s 608, 609.) Plaintiff, Northern Natural Gas Company (Northern), has filed its Response (Doc. 622), and Nash has filed a Reply Memorandum. (Doc. 629.) After reviewing the motion and briefs, the Court is prepared to rule. For the reasons set forth below, the motion is granted.
At a status conference on October 19, 2012, the Court entered an order requiring defendants serve a designation of experts they intend to use in this case not later than November 19, 2012. (Doc. 570, at 7.) The Court had previously required Northern to file a designation of any expert witnesses it intended to call by October 15, 2012. (Doc. 508, at 5.)
A week after the status conference, and before defendants were required to identify their experts, Northern filed its Notice of Intent to Issue Subpoenas to Produce Documents, Information or Objects from seventeen separate individuals or entities, including a subpoena to be directed to Platt, Sparks & Associates Consulting Petroleum Engineers, Inc. (Platt Sparks) (Doc. 576-10.) That subpoena set out six paragraphs of documents which were to be produced by Platt Sparks, including opinions and conclusions concerning petroleum engineering consulting services performed by Platt Sparks for Nash in 2009, and services performed by Platt Sparks concerning any wells located in the Expansion Area which is the subject of this condemnation action. (Doc. 576-10, at Ex. B.)
Thereafter, on November 19, 2012, the producer defendants, including Nash, filed a joint designation of expert witnesses identifying seven individuals as experts. (Doc. 599.) Of the seven individuals identified, the producers stated that six of them “may provide testimony” on various identified topics. As to the seventh individual, Cary McGregor of Platt Sparks, the designation stated that he “will provide testimony” on topics of petroleum engineering and valuation of oil and gas properties. (Doc. 599, at 2.) Counsel for Nash then contacted Northern’s counsel and argued that the subpoena was improper and stated that if Northern pushed forward with the subpoena, Nash would have to move to quash it. (Doc. 609-1.) Apparently, Northern decided not to withdraw the subpoena, and Nash filed the present motion to quash this subpoena.
It is important to note that the court’s requirement that defendants identify the names of experts they intend to use in this case was a preliminary matter designed to identify potential experts prior to establishing a later formal deadline for expert reports pursuant to Fed.R.Civ.P. 26(a)(2)(B). As the court noted during the hearing, “ We're not trying to hold you [defendants] to anything at this point in time in terms of who your experts are going to be.” (Doc. 575, at 37, lines 23-25.) Therefore, Nash’s statement that it has not finally designated Platt Sparks as a testifying expert is understandable, notwithstanding the specific language used in the written designation.
Furthermore, even if Platt Sparks has been currently identified as a testifying expert for defendants, this does not preclude a party from switching a testifying expert to the position of a consulting expert. See e.g., Matt Corbin and Casey Tourtillott, “Fair Game or Out of Bounds: Tackling Expert Discovery in Kansas Federal Courts, ” 82 Kan. Bar Assoc. Journal 30, 32 (2013). Thus, at this preliminary stage of the proceedings, it is uncertain which rules will ultimately govern attempted discovery of McGregor and Platt Sparks.
However, even assuming arguendo that Platt Sparks’ Cary McGregor is a testifying expert, the court has concerns about allowing subpoenas for records from the expert prior to his publication of an expert report stating his opinions which is required by Rule 26(a)(2)(B). Clearly, as Northern acknowledges, if a testifying expert is required to prepare a written report under Rule 26(a)(2)(B), no party may seek to take a deposition of a testifying expert until that expert has submitted a report. Fed.R.Civ.P. 26(b)(4)(A). Northern argues, however, that Rule 26(b)(4)(A) does not bar discovery of an expert by means other than a deposition, and that the time limitations applicable to depositions in Rule 26(b)(4)(A) do not apply to other types of expert discovery such as records subpoenas.
Northern cites the 2010 Notes of Advisory Committee as well as two opinions from Kansas courts for the general proposition that discovery of an expert may be conducted by discovery procedures other than depositions. Northern would also construe these authorities to imply that the timing limitation applicable to depositions is not applicable to other types of discovery so that other discovery, such as records subpoenas, can be initiated and served at any time. In making that argument, Northern concedes that none of the cited authorities specifically states that such discovery can proceed prior to issuance of an expert report, and also concedes that the two Kansas cases involve factual situations where the disputed subpoenas were only issued after the preparation of the expert’s formal written report. (Doc. 622, at 5 n. 3.)
The fact that Northern can cite no case where the court allowed document subpoenas to be issued to an expert witness prior to the preparation and submission of the expert’s written report supports this court’s understanding of the normal federal practice of expert discovery in this district – first the expert report, then, if necessary, additional discovery. The court does not believe that the authorities cited by Northern can be construed to change this normal procedure.
Even if the authorities did impliedly allow for non-deposition discovery of an expert witnesses prior to preparation of the expert’s report, this court has the power to establish the priority of discovery by specific order. In this case the court has determined, and therefore orders, that any discovery of testifying expert witnesses shall be allowed only after such testifying expert has prepared and produced a formal written report at the time required by the court. Since no deadline has yet been set for defendants to submit formal written expert reports, the subpoena to Platt Sparks is premature.
Northern argues that even if it is unable to receive discovery until after Platt Sparks has issued its expert report, it should be entitled to receive documents in Platt Sparks possession concerning prior engagements in which Platt Sparks served as “an expert or consultant.” (Doc. 622, at 6.) The court disagrees. To begin expert discovery piecemeal before issuance of an expert report, would necessarily lead to confusion and likely duplication of efforts, with resulting additional burden and expense on the producing party. Where the legal right to commence early expert discovery is substantially in dispute, as it is here, any additional ...