NEW YORK (

TheStreet

) - Centers for Medicare and Medicaid Services Chief Don Berwick is stepping down after his confirmation didn't past muster in the Senate.

Berwick's resignation goes into effect on Dec. 2, according to

The Associated Press.

The White House

has nominated Marilyn Tavenner

, Berwick's deputy, for the top post.

Forty-two Republican senators asked that Berwick's nomination be withdrawn, the

AP

said. Sen. Orrin Hatch, (R., Utah) led the opposition against Berwick, citing past controversial statements and a lack of management experience.

Berwick is a clinical professor of pediatrics and health care policy at Harvard's medical school and was previously a pediatrician.

Tavenner managed Virginia's health department under then Governor Tim Kaine. She is a nurse and has been at the CMS for more than a year.

--

Written by Alexandra Zendrian in New York

.

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Alexandra Zendrian

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