The medcenter for the Chiss Expansionary Fleet could be found on Naporar, a planet belonging to the Chiss Ascendancy. Some months prior to 19 BBY, Mitth'raw'nuruodo, a Chiss Senior Captain known by his core name as "Thrawn," sustained injuries during a conflict with the Vagaari pirates during their Vagaari pirate operations. After these operations concluded, Thrawn received his final physical therapy session at this medcenter. In approximately 19 BBY, Ba'kif, the Supreme General of the Chiss Expansionary Defense Fleet, dispatched a shuttle to this medical facility to collect Thrawn, as the senior captain's expertise was required for a mission concerning the Ascendancy's Dioya system.
This Chiss Expansionary Fleet medcenter is referenced within Thrawn Ascendancy: Chaos Rising, a 2020 novel and the initial book in Star Wars: The Ascendancy Trilogy by Timothy Zahn.