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

Individual provider Clinical Psychologist · NPI 1831564228

Dr. Douglas Demerchant, PSYD is a Clinical Psychologist in Wheaton, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2015
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

620 W Roosevelt Rd Ste D1
Wheaton, IL 60187-2306
Phone: (630) 462-1999
Fax: (630) 462-0069
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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 071003669 (IL)

Record details

NPI number1831564228
Entity typeIndividual (Type 1)
GenderMale
Credentials PSYD
Sole proprietorYes
NPI enumeratedDecember 10, 2015
Last updated in NPPESDecember 10, 2015

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