
    Dean Philip HARRIS, Plaintiff-Appellant, v. VARGO, Dr.; et al., Defendants-Appellees.
    No. 10-35490.
    United States Court of Appeals, Ninth Circuit.
    Submitted Sept. 19, 2012.
    
    Filed Sept. 26, 2012.
    Dean Philip Harris, Salem, OR, pro se.
    Michael A. Casper, Assistant Attorney-General, AGOR-Office of the Oregon Attorney General, Salem, OR, for Defendants-Appellees.
    Before: LEAVY, HAWKINS, and HURWITZ, Circuit Judges.
    
      
       The panel unanimously concludes this case is suitable for decision without oral argument. See Fed. R.App. P. 34(a)(2).
    
   MEMORANDUM

Oregon state prisoner Dean Philip Harris appeals pro se from the district court’s summary judgment in his 42 U.S.C. § 1983 action alleging that defendants were deliberately indifferent to his serious medical needs. We have jurisdiction under 28 U.S.C. § 1291. We review de novo, Toguchi v. Chung, 391 F.3d 1051, 1056 (9th Cir.2004), and we affirm.

The district court properly granted summary judgment to Hardy Myers, the former Oregon Attorney General, because Harris failed to raise a genuine dispute of material fact as to whether Myers was personally involved in any alleged deprivation of Harris’s rights. See Barren v. Harrington, 152 F.3d 1193, 1194 (9th Cir.1998) (order) (“Liability under § 1983 must be based on the personal involvement of the defendant.”).

The district court properly granted summary judgment to the remaining defendants because Harris failed to raise a genuine dispute of material fact as to whether defendants were deliberately indifferent to his chronic back pain. See Toguchi, 391 F.3d at 1060 (“Deliberate indifference is a high legal standard.”); see also Wilhelm v. Rotman, 680 F.3d 1113, 1122 (9th Cir.2012) (difference of medical opinion is insufficient to establish deliberate indifference).

Contrary to Harris’s contention, his consent to the magistrate judge’s designation was not required because the magistrate judge did not enter dispositive orders and the district court judge conducted de novo review. See 28 U.S.C. § 636(b)(1); Estate of Conners by Meredith v. O’Connor, 6 F.3d 656, 658 (9th Cir.1993) (discussing scope of magistrate judge’s authority under § 636(b)(1)(B)).

We do not consider issues not explicitly and distinctly raised and argued in the opening brief, nor arguments and allegations raised for the first time on appeal. See Padgett v. Wright, 587 F.3d 983, 985 n. 2 (9th Cir.2009) (per curiam).

Harris’s motion to strike, received on August 6, 2012, is granted.

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