budget
The pair clashed when it came to the health secretary's promises to implement change in the sector.
The government plans to increase the current £2 cap to £3 in the new year.
The PM also announced that the bus cap would go from £2 to £3 at the end of the year.
"You're not being honest now! You can't answer the question," the presenter said to Pat McFadden.
In a blow for the chancellor, a new poll shows voters would prioritise lower taxes over investment in public services.
"I might terminate this interview," the LBC presenter told James Murray.
The chancellor confirmed the move ahead of next week's Budget.
The government is expected to raise National Insurance contributions for employers in the Budget.
The BBC presenter had suggested Wes Streeting was "hiding behind the Budget".