"We knew that it was coming and that he was very sick, but I don't think somebody should get that news delivered that way".
The elderly man was suffering from symptoms associated with the chronic lung disease that would rob him of his life.
Mr Quintana's granddaughter Annalisa Wilharm described the moment the remote doctor informed her grandfather of his impending death on the screen.
"Had I been there I would have told him to turn around, roll his a** out and send in a human."
Ernest Quintana died after being told by a doctor who visited him via robot that there were no more treatment options left.
As her grandfather had a hearing problem, she had to relay the news, KTVU reported.
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It was through the video call that the doctor told Quintana that he only had days to live.
"The use of the term "robot" is inaccurate and inappropriate", Gaskill-Hames exclaimed.
"We offer our honest condolences", said Kaiser Permanente senior vice-president Michelle Gaskill-Hames. That evening, Wilharm told her mother and grandmother - Quintana's wife of 58 years - that the pair should go home and get some rest.
Kaiser said they are continuously learning how to best integrate technology into patient interactions and will use this experience as an opportunity to make improvements.
Hospital administration officials claimed that video conferencing has "worked wonders" for their patients and the patient's families because they're warm and intimate.
"This secure video technology is a live conversation with a physician using tele-video technology, and always with a nurse or other physician in the room to explain the objective and function of the technology", Ms Gaskill-Hames said.
"We understand how important this is for all concerned, and regret that we fell short of the family's expectations", she said.
"Our health care staff receive extensive training in the use of telemedicine, but video technology is not used as a replacement for in-person evaluations and conversations with patients", reads the statement, which was published in full by KTVU.