Margot Gay Mahan, PSY.D.
Clinical Psychologist · Naperville, IL
Margot Gay Mahan, PSY.D. is a clinical psychologist with a practice address in Naperville, Illinois, and NPI 1669568077, issued on Oct 4, 2006. Check the license (Illinois 071-0066277, as entered in NPPES) with the Illinois board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Margot Gay Mahan
- Credential
- PSY.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- 071-0066277 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1555 Naperville-Wheaton RD Suite 113, Naperville, IL 60563
- Phone
- (312) 719-1360
- Enumerated
- Oct 4, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20101019000410); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 3,947 in Illinois → Look up another NPI →
Verify Margot Gay Mahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 071-0066277Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Margot Gay Mahan among 3,947 clinical psychologist records in Illinois
Margot Gay Mahan, PSY.D. is one of 3,947 clinical psychologist records with a practice address in Illinois. 16% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 76% newer
- In a Medicare fileNo · 16% of these records are
- In the CMS Doctors and Clinicians fileYes · 27% of these records are
- Graduated1999 · median 2004 among the 1,081 with a school on file
- Record last updated2007 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
137 clinical psychologist records list a practice address in Naperville
They are 137 of the 4,634 NPPES records with a practice address in Naperville, and 3,947 clinical psychologist records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 3,947 in Illinois → Every provider in Naperville → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Richard Alford, PH DNaperville, IL 605631144231911
- Mary Ellen BratuNaperville, IL 605631396783767
- Shirley Dorough-Carlson, PSYDNaperville, IL 605631578654455
- Jenny Ebeid, PSYDNaperville, IL 605631710998679
- Angela Gillham, PSY.D.Naperville, IL 605631194878405
- Mary Goebel, PSY.D.Naperville, IL 605631497830418
- Karin Johnson, PSYDNaperville, IL 605631699837310
- Tracy Leung, PSYDNaperville, IL 605631154423929
Common questions
What is Margot Gay Mahan, PSY.D.'s NPI number?
Margot Gay Mahan, PSY.D.'s National Provider Identifier (NPI) is 1669568077, issued on Oct 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Margot Gay Mahan, PSY.D. located?
The NPPES record lists a practice address at 1555 Naperville-Wheaton RD Suite 113, Naperville, IL, 60563. Phone: (312) 719-1360. Providers update this record themselves, so call before visiting.
How can I verify Margot Gay Mahan, PSY.D.'s license?
NPPES lists Illinois license number 071-0066277, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.