Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Nader M. Beshay, MD

Works at hospitals in Oak Lawn, IL · Chicago, IL · Harvey, IL · Illinois

Summary

Nader M. Beshay, MD (Internal Medicine) is listed by Medicare at 3 hospitals in Oak Lawn, IL, Chicago, IL and Harvey, IL. NPI 1780673897. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Nader M. Beshay, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
42Years since medical school (graduated 1984)
MaleGender (as listed)
Advocate Health and Hospitals CorporationGroup practice

Quick answers

Which hospitals does Nader M. Beshay work at?
Medicare's official clinician data lists Nader M. Beshay at 3 hospitals: Advocate Christ Hospital & Medical Center, Advocate Trinity Hospital and Ingalls Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Nader M. Beshay see patients?
Medicare's clinician data lists 4 practice locations, including Buffalo Grove, IL, Hazel Crest, IL and Olympia Fields, IL. Call before your visit to confirm the address.
What is Nader M. Beshay's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Nader M. Beshay accept Medicare assignment?
Yes. Medicare's clinician data says Nader M. Beshay accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does Nader M. Beshay offer telehealth?
Medicare's clinician data says Nader M. Beshay offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Nader M. Beshay?
(847) 459-1160, as listed in official Medicare / NPI Registry data.
What is Nader M. Beshay's NPI number?
1780673897. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Nader M. Beshay works

Medicare's Facility Affiliation Data lists Nader M. Beshay at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Nader M. Beshay is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Nader M. Beshay as a member of this group (CMS data updated 2026-10-02).

  • Advocate Health and Hospitals Corporation3,118 clinicians in the group

Specialties

Find other Internal Medicine doctors in Illinois →

Other internal medicine doctors in Buffalo Grove

Clinicians with the same Medicare primary specialty in Buffalo Grove, IL — not a recommendation.

All internal medicine doctors in Buffalo Grove →

Clinician information

CredentialMD
Graduation year1984
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1780673897
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians