Which physician was involved with the rebuilding of the Louvre?

Claude Perrault was pivotal in the rebuilding of the Louvre, particularly in the context of the Classical architecture that characterized the building's expansion during the 17th century. He is particularly noted for designing the central pavilion of the east front, which was a significant addition to the original structure. Perrault's work brought a neoclassical elegance to the Louvre, aligning with the ideals of that period, emphasizing harmony, proportion, and the use of classical elements such as columns and pediments.

The involvement of other individuals mentioned in the options is worth noting for context. Louis Le Vau was known for his role in designing several royal buildings and gardens, including parts of the Louvre, but his prominent contributions were more about the overall architecture of the palace rather than the specific rebuilding efforts. Charles Le Brun was primarily an artist and architect, celebrated for his work as a painter and for designing the decorative schemes within the Louvre, rather than its structural renovations. Jean Baptiste Colbert, as a statesman, played a significant role in the financial and administrative aspects of the arts in France, assisting in promoting cultural initiatives and projects, but did not directly involve himself in architectural design or rebuilding efforts.