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

Individual provider Clinical Psychologist · NPI 1649392044

Dr. John F Blattner, PHD is a Clinical Psychologist in Downers Grove, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2007
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

1000 Maple Ave
Downers Grove, IL 60515-4965
Phone: (630) 968-5950
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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 71-4501 (IL)

Record details

NPI number1649392044
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedApril 4, 2007
Last updated in NPPESJuly 8, 2007
Mailing address1000 Maple Ave, Downers Grove, IL 60515-4965

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