The University of the Pacific is California’s oldest chartered university, established in 1851. In the decades since, we have earned a reputation as an innovative leader in higher education. Our Hearing and Balance Center in Stockton exemplifies these values, offering a wide range of hearing care services to residents of Stockton and the surrounding communities. These include complete hearing evaluations, fitting and programming of hearing devices, cochlear implant evaluation and programming and tinnitus evaluation. Externship Information: