MARGARET BESLER NAGEL M.D.
NPI 1841677051
Pediatrics - Pediatric Hematology-Oncology in Peoria, IL

Q: What is Margaret Nagel's NPI number?

The NPI number for Margaret Nagel is 1841677051. It was assigned to this individual provider in the NPPES registry on April 27, 2015. The provider is also known as Margaret Frances Besler MD.

Q: What is Margaret Nagel's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Hematology-Oncology, with taxonomy code 2080P0207X.

Q: When was this NPI record last updated?

The NPPES record for Margaret Nagel was last updated on January 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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 April 27, 2015PECOS Enrolled

530 NE GLEN OAK AVE, PEORIA, IL 61637(309) 624-4945 Get Directions Write a Review

NPPES record last updated: January 16, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Jan 16, 2026, Nov 29, 2022, Feb 11, 2020 (3 updates tracked since 2020).

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About Margaret Besler Nagel M.d. NPPES

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

MARGARET BESLER NAGEL M.D. (NPI 1841677051) is an individual pediatric hematology-oncology provider in Peoria, Illinois, licensed in Texas (T9190) and active in the NPI registry since April 2015. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1841677051

Entity TypeIndividualFemale

Primary Taxonomy2080P0207X

Provider Legal NameMARGARET BESLER NAGELCredential: M.D.

Location Address530 NE GLEN OAK AVEPeoria, IL 61637-0001

Mailing Address530 Ne Glen Oak AvePeoria, IL 61637-0001 · (309) 624-4945

Phone(309) 624-4945

Sole ProprietorNo

Enumeration DateApril 27, 2015

Last NPPES UpdateJanuary 16, 20263 updates tracked since enumeration

NPPES CertifiedJanuary 16, 2026

✔ NPI 1841677051 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 5

★ Primary SpecialtyPediatrics · Pediatric Hematology-OncologyAllopathic & Osteopathic Physicians

Taxonomy Code2080P0207X

Licenses✔ Licensed in TX · T9190✔ Licensed in IL · 036168262

Definition

A pediatrician trained in the combination of pediatrics, hematology and oncology to recognize and manage pediatric blood disorders and cancerous diseases.

Also ListedEmergency MedicineTaxonomy 207P00000X · License 56144 (TN)

Also ListedPediatricsTaxonomy 208000000X · License 56144 (TN)

Also ListedPediatrics · Pediatric Emergency MedicineTaxonomy 2080P0204X · License 56144 (TN)

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

530 NE GLEN OAK AVE, Peoria, IL 61637

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Other Names 1

Former Name (1)Margaret Frances Besler Md

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Margaret Besler Nagel 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.

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.

DR. HAMID MAHMOOD ZIA M.D

Pathology (Anatomic Pathology & Clinical Pathology)

530 NE GLEN OAK AVE, CENTRAL ILLINOIS PATHOLOGY SC
PEORIA, IL 61637

Peoria County (309) 624-9011

THOMAS JAMES MCMORROW MD

Pediatrics