The incidents allegedly took place between 2006 and 2015 at the hospital. Dr Muhammad Khan, 54, denies groping staff members.
Dr Khan was reported to the General Medical Council following a police investigation and he has been appearing before the Medical Practitioners Tribunal Service (MPTS) in Manchester.
This week Kevin McCartney, defending Mr Khan, submitted a no case to answer submission in relation to part of the allegations involving one of three female complainants, known as Miss C.
A spokesman from the MPTS said: “During her oral evidence to this tribunal, Miss C admitted to having lied in her witness statement for Mr Khan’s tribunal, in her evidence and in her witness statement for the GMC and in her evidence to this tribunal.
“She had claimed authorship of the anonymous letter which was sent to the trust around September 2013 and which detailed a series of complaints relating to Mr Khan.
However, during her oral evidence to this tribunal she admitted under cross-examination that she was not the author of that letter.
“Mr McCartney made an application for the paragraphs of the allegation relating to Miss C’s complaints to be dismissed on the basis that there is no case to answer.
“In summary, Mr McCartney submitted that Miss C’s lie had fundamentally undermined her credibility to such a degree that the tribunal may conclude that parts of the allegation cannot be found proved on the balance of probabilities.
“The tribunal acknowledged that, in the case of a witness who admits to having lied during the course of their evidence, there is the potential for their credibility to be seriously undermined.
“It was fully aware of the significance and seriousness of a witness lying under oath.
“It accepted that there are some inconsistencies between the recorded accounts of Miss C and other witnesses.
“However, these matters will be subject to close scrutiny when the tribunal reviews the evidence at the facts stage.
“Mr McCartney, on behalf of Mr Khan, will have the opportunity to put forward a defence in due course. He will be able to draw the tribunal’s particular attention to any apparent inconsistencies, some of which he has already rehearsed in his submission in support of this application.”
The tribunal continues.