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

Individual provider Clinical Psychologist · NPI 1023090990

Dr. John Gavend Sonnenberg, PHD is a Clinical Psychologist in Chicago, Illinois. Licensed in Illinois. Registered with an NPI since 2005.

Licensed in
IL
In the registry since
2005
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

1021 W Lawrence Ave
Chicago, IL 60640-5017
Phone: (773) 989-8313
Fax: (773) 989-9692
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 071005109 (IL)

Record details

NPI number1023090990
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedNovember 16, 2005
Last updated in NPPESMarch 12, 2015

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