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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.

DR. TREY DEJUAN WILLIAMS MD
NPI 1487302014
Emergency Medicine in Chicago, IL

Active since March 14, 2022PECOS Enrolled
5841 S MARYLAND AVE # MC5068, CHICAGO, IL 60637(773) 702-6250 Get Directions Write a Review

NPPES record last updated: July 21, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 21, 2026, May 2, 2023 (2 updates tracked since 2023).

About Dr. Trey Dejuan Williams Md NPPES

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

DR. TREY DEJUAN WILLIAMS MD (NPI 1487302014) is an individual emergency medicine provider in Chicago, Illinois, licensed in Illinois (036178677) and active in the NPI registry since March 2022. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1487302014
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. TREY DEJUAN WILLIAMSCredential: MD
Location Address5841 S MARYLAND AVE # MC5068Chicago, IL 60637-1443
Mailing Address150 Harvester Dr Ste 300Burr Ridge, IL 60527-5965
Phone(773) 702-6250
Sole ProprietorYes
Enumeration DateMarch 14, 2022
Last NPPES UpdateJuly 21, 20262 updates tracked since enumeration
NPPES CertifiedJuly 21, 2026
✔ NPI 1487302014 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in IL · 036178677
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
5841 S MARYLAND AVE # MC5068, Chicago, IL 60637
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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)

Dr. Trey Dejuan Williams 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 60637 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
$94.06 typical visit price
range $60.08 – $183.39
Typical copayment $23.51 (range $15.02 – $45.84)
Most-billed visit code 99203
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.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

RACHEL MARIE WHITTAKER
Emergency Medicine
5841 S MARYLAND AVE # MC5068
CHICAGO, IL 60637
Cook County (773) 702-9109
MEREDITH HOLLENDER
Emergency Medicine
5841 S MARYLAND AVE # MC5068
CHICAGO, IL 60637
Cook County (737) 029-5007
JACLYN WECHT MD
Student in an Organized Health Care Education/Training Program
5841 S MARYLAND AVE # MC5068
CHICAGO, IL 60637
Cook County (773) 702-9500
UNIVERSITY OF CHICAGO MEDICAL CENTER
General Acute Care Hospital
5841 S MARYLAND AVE # MC5068
CHICAGO, IL 60637
Cook County (773) 702-1000
DR. MICHAEL MCGARY MD
Emergency Medicine
5841 S MARYLAND AVE # MC5068
CHICAGO, IL 60637
Cook County (773) 702-7624
JULIA CAROLYN MURRAY MD
Emergency Medicine
5841 S MARYLAND AVE # MC5068
CHICAGO, IL 60637
Cook County (773) 702-9500
DR. ALI SHAMMOUT MD
Emergency Medicine
5841 S MARYLAND AVE # MC5068
CHICAGO, IL 60637
Cook County (773) 702-9500
MOHAMED ALHADI HAMOUDA MD
Emergency Medicine
5841 S MARYLAND AVE # MC5068
CHICAGO, IL 60637
Cook County (773) 702-3820

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 Trey Williams's NPI number?

The NPI number for Trey Williams is 1487302014. It was assigned to this individual provider in the NPPES registry on March 14, 2022.

Where is Trey Williams located?

Trey Williams practices at 5841 S Maryland Ave # Mc5068, Chicago, IL 60637. The listed phone number is (773) 702-6250.

What is Trey Williams's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Trey Williams enrolled in Medicare?

Yes. Trey Williams is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Trey Williams was last updated on July 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 33 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.