Our Lady of the Lake Regional Medical Center 5000 Hennessey Boulevard Baton Rouge, La 70808 (225) 765-8819 Our Lady of the Lake Ascension 1125 W. Highway 30 Gonzales, LA 70737 (225) 647-5008 Thomas J. Moran Imaging Center (Provides a full line of Oncology Imaging Services) 4950 Essen Lane Baton Rouge, LA 70808 (225) 374-1800 Lake Imaging Center.