Here is some more information on this linking word. Note the use of punctuation.
Linking word: In addition
Meaning: As well as; plus
Common use 1: Connects between sentences
Grammar: Complete clause. Linking word + comma + complete clause
Example: Many hospitals try to raise money privately. In addition, they receive government subsidies.
Common error: Many hospitals try to raise money privately, in addition they receive government subsidies.
Common use 2: At the end of the sentence
Grammar: Complete clause + comma + noun phrase
Example: Many hospitals try to raise money privately, receiving government subsidies in addition.
Common error: Many hospitals try to raise money privately, receive Government subsidies in addition.