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

William Ayala, BA

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1538327325

William Ayala, BA is an Addiction (Substance Use Disorder) Counselor in Pasadena, California. Registered with an NPI since 2008.

In the registry since
2008
What do these letters mean?
BA — Bachelor of Arts
An undergraduate arts degree.

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Practice location Address checks out

1450 N Lake Ave # 150
Pasadena, CA 91104-2301
Phone: (626) 794-1161
Fax: (626) 794-6071
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Addiction (Substance Use Disorder) Counselor (primary) Taxonomy 101YA0400X

Record details

NPI number1538327325
Entity typeIndividual (Type 1)
GenderMale
Credentials BA
Sole proprietorNo
NPI enumeratedMay 28, 2008
Last updated in NPPESJanuary 2, 2018
Mailing address1450 N Lake Ave # 150, Pasadena, CA 91104-2301

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