Charity ranks.

L.A. charities are growing faster than those in many other U.S. cities, and the area has the third-highest concentration of charities promoting health.

Those are among the findings of a recent study by Charity Navigator, which determined that 112 of the nation's top charities were based in L.A.

Charity Navigator ranked the city's individual charities for efficiency in fundraising, expenses and growth potential.

Among the highest-ranking charities were the Music Center Foundation, the Jonsson Cancer Center Foundation, Catholic Charities of Los Angeles and Vista Del Mar Child and Family Services,

Los Angeles ranked 16th out of 25 in the Charity Navigator's overall score, which covers efficiency, growth and expenses. Pittsburgh ranked highest.

Tim Gamory, Charity Navigator's spokesman, said L.A.'s role in the world of charity is most notable on the health care front, especially considering donations for research. "Los Angeles plays a vital role in our country because they are positioning to continue this important work," he said.