Dobson played for the first time since Nov. 27 as the Islanders defeated the Lightning 5-1 on Monday.
Leddy (lower body) won't suit up in Monday's clash against Tampa Bay, Andrew Gross of Newsday reports.
Varlamov will guard the road net in Monday's tilt against the Lightning, Chip Alexander of The Raleigh News & Observer reports.
Dal Colle has been a healthy scratch for four of the last five games for the Islanders.
Leddy was forced to leave the game early Saturday with what looked like a leg injury, Andrew Gross of Newsday reports.
Greiss will be in goal for Saturday's road game in Dallas.
Varlamov was the first goalie off the ice from practice Friday, Arthur Staple of The Athletic reports.
The Islanders loaned Koivula to AHL Bridgeport on Friday.
Pulock scored the game-winning goal on the power play and had three shots with three blocks and two hits in Thursday's 3-2 overtime win over Vegas.
Nelson scored a goal on three shots in a 3-2 overtime win versus the Golden Knights on Thursday.
Clutterbuck (face) scored his third goal of the season and dished out five hits in Thursday's 3-2 overtime win over Vegas.
Varlamov stopped 31 of 33 shots in Thursday's 3-2 overtime win against Vegas.
Boychuk hasn't registered a point for the Islanders in his last 14 games.
Clutterbuck (face) will be in the lineup for Thursday's matchup with Vegas, Brian Compton of NHL.com reports.
Varlamov was the first goalie off the ice ahead of Thursday's matchup with Vegas and will get the starting nod at home, Arthur Staple of The Athletic reports.
Kuhnhackl (lower body) was designated for long-term injured reserve and sent down to AHL Bridgeport for a conditioning assignment.
Coach Barry Trotz did not have an update as to the status of Clutterbuck after he took an unpenalized cross-check to the face versus Montreal on Tuesday, Andrew Gross of Newsday reports.
Clutterbuck suffered an injury in the first period of Tuesday's game against the Canadiens, Andrew Gross of Newsday reports.
Koivula was a healthy scratch for the third time in the last five games for the Islanders on Tuesday versus Montreal.
Greiss will guard the cage during Tuesday's road clash with the Canadiens.
Komarov collected an assist, three hits and a plus-2 rating in Monday's 4-1 win over the Red Wings.
Leddy posted a power-play assist and two PIM in Monday's 4-1 win over the Red Wings.
Bailey produced an assist and a plus-2 rating in Monday's 4-1 win over the Red Wings.
Barzal generated an assist in Monday's 4-1 win over the Red Wings.
Pulock registered three assists and a plus-3 rating in Monday's 4-1 win over the Red Wings.