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

Dr. Gregory N Lewis, PSYD

Individual provider Psychologist · NPI 1063471027

Dr. Gregory N Lewis, PSYD is a Clinical Psychologist in Wheaton, Illinois. Qualified in 1989, 37 years ago. Practices with Alliance Clinical Associates SC, a 19-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Illinois.

Years since qualifying
37
Licensed in
IL
In the registry since
2006
Specialties on file
2
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

7 Blanchard Cir Ste 201
Wheaton, IL 60189-2039
Phone: (630) 653-2300
Fax: (630) 653-2895
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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 071-004107 (IL)
Psychologist Taxonomy 103T00000X · Licence 071004107 (IL)

Record details

NPI number1063471027
Entity typeIndividual (Type 1)
GenderMale
Credentials PSYD
Sole proprietorYes
NPI enumeratedMarch 20, 2006
Last updated in NPPESApril 26, 2021
Certification dateApril 26, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 1989 (37 years in practice)
Group practice Alliance Clinical Associates Sc — 19 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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