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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MARJORIE H MAYER MD
NPI 1770569006
Internal Medicine - Endocrinology, Diabetes & Metabolism in Winnetka, IL

Active since December 19, 2005
542 LINCOLN AVE, WINNETKA, IL 60093(847) 446-1829(847) 446-1118 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Marjorie H Mayer Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARJORIE H MAYER MD (NPI 1770569006) is an individual endocrinology, diabetes & metabolism provider in Winnetka, Illinois and active in the NPI registry since December 2005.

NPPES Registry Identity

NPI1770569006
Entity TypeIndividualFemale
Primary Taxonomy207RE0101X
Provider Legal NameMARJORIE H MAYERCredential: MD
Location Address542 LINCOLN AVEWinnetka, IL 60093-2308
Mailing Address542 Lincoln AveWinnetka, IL 60093-2308 · (847) 446-1829 · Fax (847) 446-1118
Phone(847) 446-1829
Fax(847) 446-1118
Sole ProprietorNo
Enumeration DateDecember 19, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1770569006 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
542 LINCOLN AVE, Winnetka, IL 60093
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Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Marjorie Mayer's NPI number?

The NPI number for Marjorie Mayer is 1770569006. It was assigned to this individual provider in the NPPES registry on December 19, 2005.

Where is Marjorie Mayer located?

Marjorie Mayer practices at 542 Lincoln Ave, Winnetka, IL 60093. The listed phone number is (847) 446-1829.

What is Marjorie Mayer's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

When was this NPI record last updated?

The NPPES record for Marjorie Mayer was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 40 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.