Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr Margot Gay Mahan & Assoc PC

Organization Clinical Psychologist · NPI 1083929327

Dr Margot Gay Mahan & Assoc PC provides Clinical Psychologist services in Naperville, Illinois. Licensed in Illinois. Registered with an NPI since 2010.

Licensed in
IL
In the registry since
2010
What do these letters mean?
PC — Professional corporation
A form of business registration, not a clinical qualification.

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Practice location Address checks out

1555 Naperville Wheaton Rd Ste 115
Naperville, IL 60563-1557 Not confirmed with CMS for 16 years — call before visiting
Phone: (312) 719-1360
Fax: (773) 751-2250
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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 071006277 (IL)

Record details

NPI number1083929327
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Margot Mahan — President · (312) 719-1360
NPI enumeratedAugust 11, 2010
Last updated in NPPESAugust 11, 2010
Mailing address1555 Naperville Wheaton Rd, Suite 115, Naperville, IL 60563-1557

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