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WAHID KASSAR MD LTD
NPI 1356961304
Internal Medicine - Endocrinology, Diabetes & Metabolism in Chicago, IL

Active since April 20, 2020
7447 W TALCOTT AVE STE 467, CHICAGO, IL 60631(630) 866-3636(773) 692-2035 Get Directions Write a Review

NPPES record last updated: October 2, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 12, 2023, Sep 16, 2021, Apr 20, 2020 (3 updates tracked since 2020).

About Wahid Kassar Md Ltd NPPES

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

WAHID KASSAR MD LTD (NPI 1356961304), doing business as Elite Endocrinology, is a healthcare organization registered as an endocrinology, diabetes & metabolism in Chicago, Illinois and active in the NPI registry since April 2020. The organization maintains a secondary practice location in Woodridge and lists Wahid Kassar, Owner, as its authorized official.

NPPES Registry Identity

NPI1356961304
Entity TypeOrganization
Primary Taxonomy207RE0101X
Legal Business NameWAHID KASSAR MD LTD
Location Address7447 W TALCOTT AVE STE 467Chicago, IL 60631-3715
Mailing Address7447 W Talcott Ave Ste 467Chicago, IL 60631-3715 · (630) 866-3636 · Fax (773) 692-2035
Phone(630) 866-3636
Fax(773) 692-2035
Organization SubpartNo
Authorized OfficialWahid KassarOwner · (630) 866-3636
Enumeration DateApril 20, 2020
Last NPPES UpdateOctober 2, 20253 updates tracked since enumeration
NPPES CertifiedOctober 2, 2025
✔ NPI 1356961304 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.
7447 W TALCOTT AVE STE 467, Chicago, IL 60631
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Other Names 1

Doing Business AsElite Endocrinology

Secondary Practice Location 1

Location 1900 S Frontage Rd Ste 375Woodridge, IL 60517-5144 · Phone (630) 866-3636 · Fax (773) 692-2035

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Wahid Kassar Md Ltd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Wahid Kassar MD Ltd, which bills Medicare for the services this clinician delivers.

Clinician (1)

Wahid Kassar, M.D.
Endocrinology
NPI 1144203647
7447 W TALCOTT AVE STE 467
Chicago, IL 60631
(630) 866-3636
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Wahid Kassar MD Ltd's NPI number?

The NPI number for Wahid Kassar MD Ltd is 1356961304. It was assigned to this organization in the NPPES registry on April 20, 2020. The provider is doing business as Elite Endocrinology.

Where is Wahid Kassar MD Ltd located?

Wahid Kassar MD Ltd is located at 7447 W Talcott Ave Ste 467, Chicago, IL 60631. The listed phone number is (630) 866-3636.

What is Wahid Kassar MD Ltd's specialty?

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

Is Wahid Kassar MD Ltd enrolled in Medicare?

Yes. Wahid Kassar MD Ltd is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Wahid Kassar MD Ltd?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Endocrinology) reassigns their Medicare billing to Wahid Kassar MD Ltd. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Wahid Kassar MD Ltd was last updated on October 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months 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.