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

Ernest Donell Williamson Jr.

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1649782954

Ernest Donell Williamson Jr. is an Addiction (Substance Use Disorder) Counselor in Stockton, California. Practices as a sole proprietor. Registered with an NPI since 2017.

In the registry since
2017

Practice location Address checks out

1111 N El Dorado St
Stockton, CA 95202-1305
Phone: (209) 938-0228
Fax: (209) 938-0281
Show map & directions

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 number1649782954
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedOctober 26, 2017
Last updated in NPPESOctober 26, 2017

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