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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.

LILY ZEXTER MD
NPI 1417756925
Internal Medicine in Chicago, IL

Active since March 10, 2025PECOS Enrolled
1620 W HARRISON ST CHICAGO, CHICAGO, IL 60612(312) 942-5495 Get Directions Write a Review

NPPES record last updated: July 6, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Jul 6, 2026, Mar 10, 2025 (2 updates tracked since 2025).

About Lily Zexter Md NPPES

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

LILY ZEXTER MD (NPI 1417756925) is an individual internal medicine provider in Chicago, Illinois, licensed in Illinois (125.087617) and active in the NPI registry since March 2025. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1417756925
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameLILY ZEXTERCredential: MD
Location Address1620 W HARRISON ST CHICAGOChicago, IL 60612
Mailing Address1620 W Harrison St ChicagoChicago, IL 60612
Phone(312) 942-5495
Sole ProprietorNo
Enumeration DateMarch 10, 2025
Last NPPES UpdateJuly 6, 20262 updates tracked since enumeration
NPPES CertifiedJuly 6, 2026
✔ NPI 1417756925 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in IL · 125.087617
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1620 W HARRISON ST CHICAGO, Chicago, IL 60612
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Lily Zexter Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60612 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$138.86 typical visit price
range $60.08 – $183.39
Typical copayment $34.71 (range $15.02 – $45.84)
Most-billed visit code 99204
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Lily Zexter's NPI number?

The NPI number for Lily Zexter is 1417756925. It was assigned to this individual provider in the NPPES registry on March 10, 2025.

Where is Lily Zexter located?

Lily Zexter practices at 1620 W Harrison St Chicago, Chicago, IL 60612. The listed phone number is (312) 942-5495.

What is Lily Zexter's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Lily Zexter enrolled in Medicare?

Yes. Lily Zexter is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Lily Zexter was last updated on July 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 54 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.