Guentzel scored two goals in Wednesday's 5-2 win over the Avalanche.
Guentzel set up two goals Monday in a 3-2 overtime win over Nashville.
Guentzel recorded two assists in Friday's 4-1 win over the Hurricanes.
Guentzel (undisclosed) is practicing on the top line Friday, Gabby Shirley of Bally Sports Florida reports.
Guentzel was not on the ice for practice Tuesday with an undisclosed injury, Eduardo A. Encina of the Tampa Bay Times reports.
Guentzel will skate on the Lightning's top line with Nikita Kucherov and Brayden Point.
Guentzel signed a seven-year, $63 million contract with Tampa Bay on Monday.
Tampa Bay acquired the negotiating rights to Guentzel from Carolina on Sunday in exchange for a 2025 third-round pick.
Guentzel scored a goal on two shots in Thursday's 3-2 overtime loss to the Rangers in Game 3.
Guentzel scored a goal on two shots and picked up a power-play assist in Monday's 5-3 Game 2 victory over the Islanders.