The de Blasio administration is reviewing how the city delivers health care on Rikers Island. The review comes after 15 city inmates died over a five-year period when they did not receive adequate medical care. That health care provider made a rare appearance before the City Council today. NY1’s Courtney Gross filed the following report.

Something you don't see very often is a city contractor and officials from a private health care company, taking pointed questions from members of the City Council.

"They are in your care. What is the leadership doing at Corizon to stop this from happening?" asked Councilman Corey Johnson.

"The leadership of Corizon is very committed to providing very high quality health care,” answered Dr. Calvin Johnson.

Health care this for-profit company has delivered on Rikers Island since 2001.

Its contract: $140 million per year.

"I am passionate about the care that we deliver at Rikers Island, but there is some obstacles to us being able to deliver those, that care,” said Dr. Jay Cowan of Correctional Medical Associates of New York, a subsidiary of Corizon.

It's a multi-million dollar deal now under scrutiny as the de Blasio administration assesses how health care is delivered on Rikers Island.

"We fully recognize that the model of care delivery that we currently have isn't meeting the goals of this administration and our community at large,” said Deputy Health Commissioner Sonia Angell.

This study is occurring after multiple inmate deaths where the quality of health care was questioned. Like in the case of Bradley Ballard, who died in his cell after he had been there alone for seven days. He was diagnosed with schizophrenia and diabetes, and at the time of his death he was found naked in his cell covered in feces and urine, and he had sepsis.

"We have more of these awful cases that we are hearing about because people are being denied the treatment that they deserve,” said Councilman Johnson.

Corizon's contract with the city expires in December. After officials were grilled by council members, they were asked whether they were worried that contract may not be renewed.

"We want to be a good partner. We stand by our statement today and let it articulate the important points, and so we appreciate you guys covering it for us and we're going to keep working hard at this,” said Dr. Johnson.

A de Blasio administration official says the review of how health care is delivered on Rikers Island will be completed this summer.