Individual provider · Type 1 NPI

William Henry Mazzarella Jr., COUNSELOR

Addiction (Substance Use Disorder) Registered Nurse · San Diego, CA

NPI number 1770787111 Active

About NPI 1770787111

William Henry Mazzarella Jr., COUNSELOR's National Provider Identifier is 1770787111, issued on Jun 11, 2007. The primary taxonomy on file is Addiction (Substance Use Disorder) Registered Nurse (163WA0400X), and the practice location is in San Diego, CA. The record was last updated on May 17, 2026.