Darnold missed two games with the injury. He sat out two other games earlier in the season with a sprained AC joint in the same shoulder.
"It's been a good week for Sam," said Gase.
The 23-year-old has thrown for 1,045 yards with three touchdowns and six interceptions in six appearances this year.
Gase has also said a healthier lineup with Darnold and the wideouts will give 0-10 New York a chance to see "what maybe (the offense) could have been."
The Dolphins blanked the Jets 24-0 in their first meeting this season, a game Darnold didn't play.