The sessions, lasting two hours, are usually led by healthcare assistants or admin staff, while doctors also attend for part of the appointment, to discuss potential treatment.
Joyce Robins from the campaign group Patient Concern called the group appointments a "ghastly idea" and highlighted the personal nature of most patients' conversations with Global Positioning System.
Group consultations of up to 15 patients are likely to be made "the default" for the NHS in its ten-year plan to tackle waiting times, it was claimed last night.
Following positive feedback, the option of a group appointment is set to be rolled out nationally.
There is a United Kingdom shortage of Global Positioning System and medical staff, which has been exasperated by a decline in European Union applicants to work as nurses and some NHS staff returning to European Union countries.
Group GP appointments allowing patients to have their consultation together are being trialled across England.
Where can I get a shared GP appointment?
The group appointments option is not presently available.
Trials among patients with the same condition have taken place at surgeries in London, Manchester, Birmingham, Newcastle, Berkshire and Sheffield, according to the Daily Telegraph.
Surgeries that offer shared appointments for groups of patients with similar conditions have had "very positive" feedback, family doctors say.
She continued: 'Some patients have even said they have benefited from the support they receive from their fellow patients, in addition to the care they receive from their GP.
'If you're discussing things in front of a group of strangers, you might as well tell the local town crier so he can shout it from the rooftops.
Chief executive Rachel Power said: "It could also be reassuring to patients to see others share their concerns and challenges, and can provide the benefit of peer support".
The new model of appointments is intended as an alternative to one-to-one GP appointments, and not to replace them.
"But patients must be given the choice as to whether to participate, or to continue with more traditional GP services".