(CNN) Dr. James T. Goodrich, the neurosurgeon who allowed CNN inside a remarkable operation to separate twins Jadon and Anias McDonald, died on Monday after complications related to Covid-19, according to the hospital where he worked.

"Dr. Goodrich was a beacon of our institution and he will be truly missed," said Montefiore Medicine CEO Dr. Philip O. Ozuah. "His expertise and ability were second only to his kind heart and manner."

The hospital described Goodrich as a "humble and truly caring man" who "did not crave the limelight and was beloved by his colleagues and staff." They spoke of his skills as a neurosurgeon, but also of his spirit, including how he baked cookies during the holidays and hand-delivered them to nurses.

"Jim was in many ways the heart and soul of our department - a master surgeon, a world-class educator, and a beloved colleague for all," Dr. Emad Eskandar, chair of the department of neurosurgery at the Albert Einstein College of Medicine and Montefiore Medical Center said. "His sudden loss is heart-breaking and his memory will always remain foremost in our thoughts."

The hospital called Goodrich a pioneer in the field of helping children with complex neurological conditions; he developed a multi-stage approach for separating craniopagus twins, like Jadon and Anias McDonald, who were fused at the brain and skull.

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