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

Individual provider Clinical Psychologist · NPI 1558589267

Dr. David Duncan, PSYD is a Clinical Psychologist in Naperville, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2007
What do these letters mean?
PSYD — Doctor of Psychology
A doctoral psychologist trained primarily for clinical practice.

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Practice location Address checks out

1555 N Naperville Wheaton Rd #115
Naperville, IL 60563-1557
Phone: (630) 375-7634
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X (IL)

Record details

NPI number1558589267
Entity typeIndividual (Type 1)
GenderMale
Credentials PSYD
Sole proprietorYes
NPI enumeratedApril 20, 2007
Last updated in NPPESJuly 8, 2007
Mailing address2026 Colonial St, Aurora, IL 60503-4771

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