Dear Mr. Cuddy,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located 57 record series related to hospitals, 180 record series with records related to medical matters, and 2 record series and 3 file units relating to medical policies in the Records of the U.S. Forces in Southeast Asia (Record Group 472). For more information about these non-digitized records, please contact the National Archives at College Park - Textual Reference (RDT2) via email at Archives2reference@nara.gov.
Due to the COVID-19 pandemic and pursuant to guidance received from the Office of Management and Budget (OMB), NARA has adjusted its normal operations to balance the need of completing its mission-critical work while also adhering to the recommended social distancing for the safety of NARA staff. As a result of this re-prioritization of activities, you may experience a delay in receiving an initial acknowledgement as well as a substantive response to your reference request from RDT2. We apologize for this inconvenience and appreciate your understanding and patience.
We searched online and located a publication on Medical Support of the US Army in Vietnam, 1965-1970 that may be useful.
We hope this is helpful. Best of luck with your research!