DR. PETER NGUYEN M.D.
NPI 1649653494
Pediatrics - Pediatric Emergency Medicine in Oak Lawn, IL

Q: What is Peter Nguyen's NPI number?

The NPI number for Peter Nguyen is 1649653494. It was assigned to this individual provider in the NPPES registry on June 29, 2015.

Q: What is Peter Nguyen's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Emergency Medicine, with taxonomy code 2080P0204X.

Q: When was this NPI record last updated?

The NPPES record for Peter Nguyen was last updated on April 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.

Active since June 29, 2015PECOS Enrolled

4440 W 95TH ST STE 1200H, OAK LAWN, IL 60453(708) 684-5341(708) 684-4715 Get Directions Write a Review

NPPES record last updated: April 18, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Dr. Peter Nguyen M.d. NPPES

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

DR. PETER NGUYEN M.D. (NPI 1649653494) is an individual pediatric emergency medicine provider in Oak Lawn, Illinois, licensed in Illinois (036-172737) and active in the NPI registry since June 2015. He is enrolled in Medicare PECOS and maintains a secondary practice location in Grand Rapids.

NPPES Registry Identity

NPI1649653494

Entity TypeIndividualMale

Primary Taxonomy2080P0204X

Provider Legal NameDR. PETER NGUYENCredential: M.D.

Location Address4440 W 95TH ST STE 1200HOak Lawn, IL 60453-2600

Mailing Address29373 Network PlChicago, IL 60673-1293 · (847) 390-5900

Phone(708) 684-5341

Fax(708) 684-4715

Sole ProprietorNo

Enumeration DateJune 29, 2015

Last NPPES UpdateApril 18, 2025

NPPES CertifiedApril 18, 2025

✔ NPI 1649653494 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPediatrics · Pediatric Emergency MedicineAllopathic & Osteopathic Physicians

Taxonomy Code2080P0204X

License✔ Licensed in IL · 036-172737

Definition

A pediatrician who has special qualifications to manage emergencies in infants and children.

Also ListedEmergency Medicine · Pediatric Emergency MedicineTaxonomy 207PP0204X · License 4301115622 (MI)

Also ListedPediatricsTaxonomy 208000000X · License 125067744 (IL)

4440 W 95TH ST STE 1200H, Oak Lawn, IL 60453

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Secondary Practice Location 1

Location 1100 Michigan St NE # Mc49Grand Rapids, MI 49503 · Phone (616) 391-1680

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware, Priority Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Peter Nguyen M.d. 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.

Medicare Billing Reassignments

Medicare enrollment records show Peter Nguyen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Advocate Health & Hospitals Corporation

Same address

Medical Specialty

4440 W 95TH ST
Oak Lawn, IL 60453

Reassigned Medicare billing, Illinois enrollment
Medicare enrollment name: Advocate Health And Hospitals Corporation
4,870 clinicians in this Medicare group

NPI 1912936014 (847) 390-5900

University Pediatricians

245 mi

Nurse Practitioner

3901 BEAUBIEN
Detroit, MI 48201

Reassigned Medicare billing, Michigan enrollment
360 clinicians in this Medicare group

NPI 1033143904 (313) 745-5214

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

Other Providers at the Same Location NPPES 11

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

MARY V FOWLER CPNP

Nurse Practitioner (Pediatrics)

4440 W 95TH ST STE 1200H
OAK LAWN, IL 60453

Cook County (708) 684-3133

RASHA RAHIM KAZI MD

Pediatrics (Pediatric Emergency Medicine)

4440 W 95TH ST STE 1200H
OAK LAWN, IL 60453

Cook County (708) 684-5341

DR. CYNTHIA JANE MEARS DO

Pediatrics

4440 W 95TH ST STE 1200H, ADVOCATE CHILDRENS HOSPITAL OAK LAWN
OAK LAWN, IL 60453

Cook County (708) 684-5341

NICOLE RUTH JOHNSON M.D.

Pediatrics (Child Abuse Pediatrics)

4440 W 95TH ST STE 1200H
OAK LAWN, IL 60453

Cook County (708) 684-5341

KATHLEEN MARY ARES PSY.D.

Clinical Neuropsychologist

4440 W 95TH ST STE 1200H
OAK LAWN, IL 60453

Cook County (708) 684-5580

BAILEY ROBINSON

Physician Assistant

4440 W 95TH ST STE 1200H
OAK LAWN, IL 60453

Cook County (708) 684-5437

NOELLE TRAN DO

Pediatrics (Pediatric Emergency Medicine)

4440 W 95TH ST STE 1200H
OAK LAWN, IL 60453

Cook County (708) 684-5341

MISS APRIL LYNN WILLIAMS FNP

Nurse Practitioner (Family)

4440 W 95TH ST STE 1200H
OAK LAWN, IL 60453

Cook County (708) 684-5341

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 Peter Nguyen's NPI number?

The NPI number for Peter Nguyen is 1649653494. It was assigned to this individual provider in the NPPES registry on June 29, 2015.

Where is Peter Nguyen located?

Peter Nguyen practices at 4440 W 95th St Ste 1200H, Oak Lawn, IL 60453. The listed phone number is (708) 684-5341.

What is Peter Nguyen's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Emergency Medicine, with taxonomy code 2080P0204X.

Is Peter Nguyen enrolled in Medicare?

Yes. Peter Nguyen is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Peter Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Peter Nguyen reassigns Medicare benefits to 2 organizations: Advocate Health & Hospitals Corporation (Oak Lawn, IL) and University Pediatricians (Detroit, MI). Each 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 Peter Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Peter Nguyen accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Priority Health list Peter Nguyen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Peter Nguyen was last updated on April 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.