Mrs Azarnykh was sanctioned on 5 May.
He said it would formalise joint efforts on an oncology vaccine, representing a new phase in bilateral healthcare cooperation.
Cuban President Miguel Díaz-Canel warned against military action by the United States of America.
Cuba has confirmed that officials from Havana and Washington recently held talks on the island, amid heightened tensions with the United States under President Donald Trump.
He said Cuba is willing to engage with Washington on migration, drug trafficking and security, but only based on “respect and equality”.
This development brings the total number of people released from the Cuban prison to 11,000.
Russia accused the U.S. of attempting to strangle Cuba’s economy through sanctions and other restrictive measures.
The UN has warned of potential humanitarian “collapse” in Cuba, following Washington’s attempt to block oil supplies from reaching the island.
The State Department in January paused immigrant visa processing from 75 countries “whose migrants take welfare from the American people at unacceptable rates”.
The U.S. noted that indefinite pause to visa processing for the countries would take effect from January 21.
