I can tell you for sure that she is an HM2 (SW) USN. Marine Corps correctly identified earlier does not, and never has had a dedicated corpsmen field. As the fleet marine Corpsman possess special credentials and are often deployed in country with the Marine units they are required (and proudly) wear Marine identification.
Correction, she is an HM3 (SW) my old friggin eyes playing tricks on me again. 🌫
NJ Navy Chief wrote: