The former "The Hills" star announced the happy news on his Instagram page, revealing the babies were finally home after a stint in hospital.
"After a month in the hospital and 2 weeks in the NICU I am happy to announce we brought our sons Maverick and Beau Reinhardt home today," Doug captioned the slideshow of pictures. "Thank you to all of our friends and family who have been so supportive over the last 2 months. We are so blessed to have two beautiful and healthy boys".
He didn't reveal the pair's birth date or weight.
Prior to Maverick and Beau's birth, Mia was put on bed rest to monitor the twins.
She also took to Instagram to express her delight that her sons were home safe and sound, writing: "Welcome home Mav & Beau! Our two little identical twin miracles. There is not one word strong enough to express how incredible it feels to finally get to this very day!".
While the babies are the first children for Doug, Mia is already mother to son Koby.