The hospital stood about 3/4 mile away at the site of old Fort Petite Coquilles. None of these outside structures remain today.
http://www.jcs-group.com/military/land-based/pike.html

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Here is information on photos related to the hospital

FORT PIKE
Photo Collection
FORT PIKE COLLECTION
Pix # Date of Pix Size of Pix No. of Pix Kind of image Negative

5 8 x 10 1 B&W print none

Plans for the complete Fort Pike complex from Rigolets to Lake Pontchartrain including the Fort-Shell Road-Hospital.

6 8 x 10 1 B&W print none

Plan of Hospital Site at Fort Pike complex.
http://www.southeastern.edu/acad_research/programs/csls/historical_collections/photo_collections/e_g_photos/fort_pike.html