The cases had come to light in responses to an NZMSA member survey.
Almost 750 students have now responded, with 381 saying they had been bullied. The student body was now contacting victims to see if they would make formal complaints.
Berryman said since the survey's preliminary release the NZMSA had been invited to join a medical task force to tackle the issue of bullying in the New Zealand healthcare sector.
The collective will release an industry-wide statement next month drawing attention to unacceptable behaviour in the workplace.
Discussions have also started with medical schools to devise a system for distressed students to lodge anonymous complaints.
The discussion would also include whether complaints could be heard by the Medical Council.
Since last weekend's report, some consultants had addressed students to ensure their conduct was acceptable.
The consultants' Council of Medical Colleges had also invited the NZMSA and the Resident Doctors' Association, which represents junior doctors, to present a briefing highlighting bullying at its October board meeting.
Berryman hoped the address would emphasise how good and bad learning experiences affected student learning.
Association of Salaried Medical Specialists executive director Ian Powell told the Herald on Sunday last weekend that the difficult hospital workplace created an environment of considerable pressure, but that shouldn't be an excuse for inappropriate behaviour.
"I suspect some of these areas of lower levels of inappropriate behaviour are not even seen that way by the perpetrators of it, so by raising awareness I think that will go a long way to its reduction," he said.