About GEM CITY HOME CARE, LLC. Gem City Home Care, Llc is a provider established in Dayton, Ohio specializing in home health. The NPI number of Gem City Home Care, Llc is 1790788776 and was assigned on May 2005. The practitioner's primary taxonomy code is 251E00000X with license number 0000 (OH). The provider is registered as an organization and their NPI record was last updated 5 years ago..