The boy was born at 12:02 a.m. to San Francisco residents Samantha Powell and Martin Dominguez and weighs 6 pounds and 10 ounces, a hospital spokeswoman said.
Powell is a psychiatrist with California Pacific Medical Center and Dominguez is a cardiology fellow at UCSF. This is their first child.
Powell said by phone early this morning that her due date was Dec. 31 so "we thought it was a possibility" to have a New Year's baby.
She said the couple moved to San Francisco from the Philadelphia area about a year ago and her mother came from across the country as the due date approached.
Powell thanked "the most amazing team at UCSF" for delivering the baby and asked to "give a special shout-out to my nurse Vanessia."
Another boy was born seven minutes later at 12:09 a.m. at the Kaiser Permanente Antioch Medical Center to a Pittsburg mother, a Kaiser spokesman said.
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