The primary care trust has undergone reorganisation and is now Hartlepool & Stockton CCG. Elm Tree Surgery is part of the Hartlepool & Stockton CCG. Details of primary medical services can be obtained from here. If you wish to contact them their details are as follows:
Hartlepool & Stockton CCG
1st Floor
Billingham Health Centre
Quensway
Billingham
TS23 2LA