HUNTINGTON-HILL IMAGING CENTER, WEST COVINA Huntington-Hill Imaging Center – West Covina, formerly San Gabriel Valley Diagnostic Center, is now owned by The Hill Medical Corporation. We are pleased to make high-quality imaging services even more convenient, including 3T, CT, specialty Ultrasound, Screening Mammography, DEXA and X-ray services. The Hill Medical Corporation brings more than 50 years of experience as an ACR certified out-patient imaging provider with a patient-centered approach, we will continue to service the imaging needs of West Covina.