"Even though I started with surrogacy, adoption is probably my next step," Martin told Extra after performing with other stars for the CBS special A Home for the Holidays, which raises awareness about adoption.
"I had to be here as a father … 20,000 children have been beautifully impacted by this project. Adoption is beautiful. Give it a try!" Martin, who turns 39 on Christmas Eve, added.
He also revealed the big present he's hoping for this year: "I just want my children to be happy. I want my children to be healthy."
The annual TV event airs Wednesday at 8:00 pm on CBS.