Phone Number, 225-663-5501. 9100 Bluebonnet Centre Blvd.The Lincoln National Life Insurance Company. Use black or blue Ink when completing this form. Com or call 800.937.7604. If you need assistance completing this form, please contact your retirement plan representative or the Lincoln Customer Contact Center at 800-234-3500. Bills for 2023 Session. As bills are introduced during the legislative session, the bill number and short description are included in the list below.