MEMORANDUM

Douglas Dees appeals the district court’s order compelling arbitration and its denial of his motion to vacate an arbitration award. We review the district court’s decision to compel arbitration de novo. Chiron Corp. v. Ortho Diagnostic Sys., Inc., 207 F.3d 1126, 1130 (9th Cir.2000). We reverse the order compelling arbitration, vacate the arbitration award, and remand the matter for further proceedings in district court.

I

The magistrate judge erred to the extent he used the choice-of-law provisions within the arbitration agreement to determine the foundational question of whether the arbitration agreement itself was enforceable, and by misapplying the Nevada substantive relationship test to the question of enforceability. A federal court sitting in diversity must apply the substantive law of the state in which it sits, including that state’s choice-of-law rules. See Klaxon Co. v. Stentor Elec. Mfg. Co., 313 U.S. 487, 496 , 61 S.Ct. 1020 , 85 L.Ed. 1477 (1941). Nevada has adopted the substantial relationship test for resolving contract conflict-of-laws issues. See Williams v. United Servs. Auto. Ass’n, 109 Nev. 333 , 849 P.2d 265, 266 (1993). Whether a substantial relationship exists between the foreign jurisdiction and the transaction is determined by the parties’ expectations at the time of contracting. Id.

Dees, a Nevada citizen and resident, signed the arbitration agreement in a Nevada doctor’s office, which he was referred to by his own Nevada primary physician. There was no evidence that Dees had any knowledge the doctor resided or maintained offices in California or that Dees had any reason to believe he would be undergoing any type of treatment in California at the time he signed the arbitration agreement. Therefore, Nevada law applies to the question whether the arbitration agreement is enforceable.

II

Under Nevada law, a contract of adhesion is “a standardized contract form offered to consumers ... on a ‘take it or leave it’ basis, without affording the consumer a realistic opportunity to bargain.” Obstetrics and Gynecologists v. Pepper, 101 Nev. 105 , 693 P.2d 1259, 1260 (1985). “The distinctive feature of an adhesion contract is that the weaker party has no choice as to its terms.” Id.

The arbitration agreement was a contract of adhesion because it was given to Dees on a take it or leave it basis with no explanation or indication that he could nevertheless obtain treatment from the clinic. Under Nevada law, a contract of adhesion may still be enforceable if (1) there is “plain and clear notification of the terms,” (2) there is an “understanding consent,” and (3) the clause “falls within the reasonable expectations” of the weaker party. Burch v. Second Judicial Dist. Court, 118 Nev. 438 , 49 P.3d 647, 649 (2002). The doctors have not satisfied their burden of proving all of these ele ments existed at the time Dees signed the arbitration agreement. See Pepper, 693 P.2d at 1260 .

Accordingly, arbitration under the agreement should not have been compelled and the arbitration award must be vacated. We remand this matter to the district court for further proceedings on the merits of Dees’ complaint.

REVERSED; VACATED; AND REMANDED.

This disposition is not appropriate for publication and is not precedent except as provided by 9th Cir. R. 36-3.