Long Beach Medical Center Medical Records Department 2801 Atlantic Avenue Long Beach, CA 90806 Phone: (562) 933-1141 Fax: (562) 933-1185 Hours: 8:00 AM to 4:00 PM. Miller Children's Hospital Long Beach Medical Records Department 2801 Atlantic Avenue Long Beach, CA 90806 Phone: (562) 933-1141 Fax: (562) 933-1185 Hours: 8:00 AM to 4:00 PM Map ....