Do you mean a dependent of a former member of the military, or a dependent of someone currently serving?
Former member of the military
Dear Ms. Major,
Thank you for posting your request on History Hub!
NARA National Personnel Records Center (NPRC) stores inpatient, outpatient, dental and mental health records created at Naval medical treatment facilities since the 1960s and Army, Air Force or Coast Guard facilities from 1954 to the present. These facilities transfer the Dependent Medical Folders (DMFs) to NPRC, generally after 1-5 years of inactivity.
If possible, contact the last medical treatment facility to determine if DMFs have been retired to the NPRC before sending a request. If they did, then send your request to the National Personnel Records Center (NPRC), Military Personnel Records, 1 Archives Drive, St. Louis, MO 63138-1002.
Due to the COVID-19 pandemic, NPRC will continue servicing requests ONLY associated with medical treatments, burials, homeless veterans seeking admittance to a homeless shelter, and those involving the VA Home Loan program. If your request is urgent, please see Emergency Requests and Deadlines. Please refrain from submitting non-emergency requests such as replacement medals, administrative corrections, or records research until NPRC returns to pre-COVID staffing levels. Please check archives.gov/veterans for updates to the NPRC operating hours and status. We apologize for this inconvenience and appreciate your understanding and patience.
We hope this is helpful. Best of luck with your family research!