An influential committee of MPs is to examine claims of widespread dishonesty by healthcare professionals who carry out face-to-face assessments of disability benefit claimants.

Last week, Disability News Service (DNS) published the results of a two-month investigation that suggested a serious, institutional problem that spreads across the Department for Work and Pensions (DWP) and the two private sector contractors – Atos and Capita – that assess eligibility for personal independence payment (PIP) on its behalf.

DNS included evidence from more than 20 disabled people who had contacted DNS over the last year or had commented on previous DNS news stories to claim that their assessors – usually qualified nurses – lied repeatedly in reports they produced for DWP.

Since publication, DNS has collected more than 20 further reports – some through comments on last week’s stories, and others with detailed evidence shared with DNS – from disabled people who say their assessment reports were dishonest and deeply misleading.

As a result of that evidence, the chair of the Commons work and pensions select committee, the Labour MP Frank Field (pictured), said today (Thursday): “The committee has been presented with some concerning reports about the operation of the PIP assessment process.

“I’m looking at those reports, and the issues they raise, very carefully. It will then be for the committee to decide how it wants to respond.”

The team reviewing PIP on behalf of DWP has also confirmed that it will accept evidence collected during the DNS investigation. Paul Gray’s second review of PIP is due to be published in April.

DWP has continued to show no interest in the results of the investigation and to insist that there is no dishonesty at all among its benefits assessors.

Meanwhile, a former Atos assessor has told DNS why she believes there are so many examples of dishonest assessment reports.

The former nurse worked for Atos for about six months in 2014 and 2015 before she left because she was not meeting her target of eight paper-based assessments a day.

Although she left before the period covered by the latest reports – which focus on the last 12 months – she said she believes the pressure on her former colleagues to reach their targets for completing reports left them little time to research the conditions they are assessing.

She said: “I know staff would make assumptions rather than facts… to get the reports done quickly and hope it didn’t get audited.

“Some were like me very conscientious and others banged them out for the financial incentive, with little compassion or research on conditions.”

She added: “The lack of knowledge on conditions, drugs and side-effects is shocking, but in reality assessors cannot know about every possible condition but have no time… to look them up and research the condition and effects.”

She particularly highlighted the lack of knowledge about mental health conditions, which she said meant assessors were often “totally subjective rather than objective with no time to look up the condition or read up the effects of the prescribed medication and side effects”.

She also blamed “target-driven management” and assessors “making assumptions rather than using facts”, while the risk of losing their jobs if they failed to achieve targets for the number of assessments they carried out meant assessors were “not always reading all of the evidence”.

And, she said, many assessors often wanted to finish their reports quickly “so they could be paid overtime”.

Atos has again refused to comment this week, while a DWP spokeswoman said of the former assessor’s claims: “We can’t respond on Atos’s behalf. I suggest you refer that question to them.”

In another development, one PIP claimant has provided evidence which may explain why so few complaints about assessors are upheld by DWP’s “independent” complaints body, the Independent Case Examiner (ICE), which is staffed by DWP civil servants.

He has shown DNS an email from a member of the DWP customer services team which makes it clear that he is not allowed to lodge complaints about his PIP assessor with ICE because his concerns were “regarding the decision making process so are not considered as a complaint and as such would not be signposted to ICE as a result”.

A DWP press officer responded to a question about the email just before this week’s DNS deadline to say that she could not comment because “we have not been given any details about the email or claimant you’re referring to”.

By the time she replied, it was too late to secure permission from the PIP claimant to share his email with the DWP press office.

Last week, DWP said: “Assessment providers have their own complaints processes in place, and if claimants are not satisfied with providers’ response they will be signposted to the Independent Case Examiner (ICE).

“Over 1.9 million PIP claims have been decided since April 2013 to September 2016 and in this time only a tiny fraction of complaints regarding providers’ service standards have been upheld by ICE.”