Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

William Henry Mazzarella Jr., COUNSELOR

Individual provider Addiction (Substance Use Disorder) Registered Nurse · NPI 1770787111

William Henry Mazzarella Jr., COUNSELOR is an Addiction (Substance Use Disorder) Registered Nurse in San Diego, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007

Practice location Address checks out

2456 E St
San Diego, CA 92102-2024
Phone: (619) 503-7680
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Addiction (Substance Use Disorder) Registered Nurse (primary) Taxonomy 163WA0400X · Licence 530630 (CA)

Record details

NPI number1770787111
Entity typeIndividual (Type 1)
GenderMale
Credentials COUNSELOR
Sole proprietorNo
NPI enumeratedJune 11, 2007
Last updated in NPPESMay 17, 2026
Certification dateMay 17, 2026

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