No, ILS Washington is the outsourcing company that the Russian consulate uses to process their visas. All Individuals and third party agencies are required to submit their visa requests to ILS Washington.
When using our service you must select ILS Washington in the section of the application that asks "Select the location where you will be applying for your visa"
The Embassy of Russia in Washington, D.C. is the diplomatic mission of the Russian Federation to the United States. You will not want to apply through the Embassy directly. Do not select this on the application.
This section is towards the end of the application.