Labour MP Fleur Anderson has challenged the government over the removal of patients from GP lists and secured a meeting to examine the safeguards used in the process.
Anderson told the Commons that 344,000 registrations had been removed over the previous six months, with 44% of those cases in London.
She asked ministers to pause the exercise and review whether people were being wrongly removed, potentially disrupting access to appointments, prescriptions and screening.
Health minister Diana Johnson said GP registers contain around six million more entries than England's population and that list cleaning is necessary to improve accuracy and funding allocation.
Johnson said most flagged records concerned people believed to have moved abroad. She added that removal was not based on a single data indicator or one unanswered letter and that the process usually took more than five months.
The government did not agree to a pause, but the promised meeting gives Anderson an opportunity to test the evidence, regional impact and protections for patients who remain entitled to NHS care.
