Independent Health Concern candidate Richard Taylor has retained Wyre Forest but his majority was cut by 13,000.
Dr Richard Taylor's majority was cut to 11%
He won the seat in 2001 with a majority of 17,630 votes following the decision to downgrade facilities at Kidderminster Hospital.
For the second election in a row, the Lib Dems decided not to contest the seat and Dr Taylor was returned to it with a majority of 11%.
Dr Taylor has denied doing any deals with the Lib Dems.
He said: "There's still a lot to do at the hospital. The education issue locally is absolutely vital with the change from three tiers to two.
"I wanted to be around to watch the kids who go through the change and keep an eye on staff. All staff have to re-apply for their own jobs.
"I didn't realise until I got here tonight how much I wanted to retain the enormous privilege you gave me four years ago of representing local people."
Dr Taylor polled 18,739 votes, with Conservative candidate Mark Garnier coming second with 13,489, and Labour's Marc Bayliss getting 10,716.
Labour's Trade and Industry Minister, Jacqui Smith, who was defending Redditch, which is home to many former MG Rover workers, increased her majority by just over 200 votes to 2,716.
Elsewhere in Herefordshire and Worcestershire, the results proved to be predictable with all the sitting MPs holding onto their seats.
The Conservatives retained seats in Leominster, Worcestershire Mid, Worcestershire West and Bromsgrove.
In Worcestershire West Sir Michael Spicer's majority was halved to about 2,500.
Bill Wiggin increased his share of the vote to 52% in Leominster, the safest seat in the two counties, at the expense of the second-placed Lib Dems.
In Bromsgrove, the Conservatives' Julie Kirkbride increased her majority over Labour to 10,080.
Labour's Mike Foster, who introduced the controversial hunting bill, also held onto Worcester.
Lib Dem candidate Paul Keetch, who has represented Hereford since 1997, will also remain in Parliament, after maintaining a lead of fewer than 1,000 votes over the Tories.