Endocrine and Thyroid Specialists 2449 Hospital Dr, Suite 400 Bossier City, LA 71111 (318) 212-7902 (318) 212-7905 (Fax) Office Hours Our office is staffed from 8:00 a.m. to 5:00 p.m., Monday through Friday. After Hours & Emergencies If you are in an emergency situation and it is outside of office hours, the answering service will answer your call and ensure you are guided in the right direction. If you are unable to receive the call center, contact 911 immediately.