Eastern Sierra Guide Service is a California Department of Fish and Wildlife (CDFW) licensed hunting and fishing guide service based in Mammoth Lakes, California. Licensed guides: Devin Preston and Patrick Jaeger.

Licensed services: guided hunting (rifle/shotgun), general, fly, boat and catch & release fishing and packing.

Species: bass, striped bass, perch, steelhead, trout and waterfowl.

Counties served: Inyo, Madera, Mono, San Bernardino, Shasta and Siskiyou.

License information from the CDFW public guide license lookup, October 2026. Is this your business? Claim this listing to add photos, your website and hunt details.