Home California Castro Valley, CA Eden Medical Center Eden Medical Center Contact Information 20103 Lake Chabot Rd, Castro Valley, CA, California 94546 (510) 537-1234 https://www.cvsan.org/zero_waste/coll... Hours This is a 24-hour drop-off site. Hazardous Medications 1 2 3 4 50.000 Does this listing contain inaccurate information? If so please send us a correction. Your name Your email Subject Please describe what corrections need to be made to the listing.