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MINDY L. SIMPSON M.D.
NPI 1164477246
Pediatrics - Pediatric Hematology-Oncology in Chicago, IL

Active since May 24, 2006PECOS Enrolled
1653 W CONGRESS PKWY, 1591 JELKE, CHICAGO, IL 60612(312) 942-8114(312) 942-8975 Get Directions Write a Review

NPPES record last updated: August 6, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Aug 6, 2026, Jan 13, 2026, Mar 7, 2023 (3 updates tracked since 2023).

About Mindy L. Simpson M.d. NPPES

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

MINDY L. SIMPSON M.D. (NPI 1164477246) is an individual pediatric hematology-oncology provider in Chicago, Illinois, licensed in Illinois (036-114998) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1164477246
Entity TypeIndividualFemale
Primary Taxonomy2080P0207X
Provider Legal NameMINDY L. SIMPSONCredential: M.D.
Location Address1653 W CONGRESS PKWY, 1591 JELKEChicago, IL 60612-3833
Mailing Address1653 W Congress PkwyChicago, IL 60612-3833 · (312) 942-8114 · Fax (312) 942-8975
Phone(312) 942-8114
Fax(312) 942-8975
Sole ProprietorNo
Enumeration DateMay 24, 2006
Last NPPES UpdateAugust 6, 20263 updates tracked since enumeration
NPPES CertifiedAugust 6, 2026
✔ NPI 1164477246 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Pediatric Hematology-OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0207X
License✔ Licensed in IL · 036-114998
Definition
A pediatrician trained in the combination of pediatrics, hematology and oncology to recognize and manage pediatric blood disorders and cancerous diseases.
Also ListedPediatricsTaxonomy 208000000X · License 036-114998 (IL)
1653 W CONGRESS PKWY, Chicago, IL 60612
Open in Google Maps ↗

Other Names 1

Former Name (1)Mindy L. Grunzke

Secondary Practice Locations 3

Location 11725 W Harrison StChicago, IL 60612-3841 · Phone (312) 942-3034 ext. 23034
Location 21800 McDonough RdHoffman Estates, IL 60192-4566 · Phone (312) 942-3034
Location 31620 W Harrison StChicago, IL 60612-3801 · Phone (312) 942-3034

Other Identifiers 1

Medicaid036114998IL

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter 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)

Mindy L. Simpson 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

3

Medicare enrollment records show Mindy Simpson reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Rush University Medical Center
0.1 mi
Diagnostic Radiology
1620 W HARRISON ST
Chicago, IL 60612
  • Reassigned Medicare billing, Illinois enrollment
  • Medicare enrollment name: Rush University Medical Group
  • 2,169 clinicians in this Medicare group
NPI 1184269425 (312) 563-4270
Board Of Trustees Fo The University Of Illinois
0.3 mi
Oral and Maxillofacial Surgery
811 S PAULINA ST # MC588
Chicago, IL 60612
  • Reassigned Medicare billing, Illinois enrollment
  • Medicare enrollment name: The Board Of Trustees Of The University Of Illinois
  • 2,127 clinicians in this Medicare group
NPI 1326483991 (312) 996-7546
Lurie Children's Medical Group Inc
2.9 mi
Pediatrics
225 E CHICAGO AVE
Chicago, IL 60611
  • Reassigned Medicare billing, Illinois enrollment
  • 826 clinicians in this Medicare group
NPI 1518064716 (312) 227-6412

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 20

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

KAITLIN ROBLING MD
Radiology (Diagnostic Radiology)
1653 W CONGRESS PKWY
CHICAGO, IL 60612
Cook County (312) 942-5000
LAUREN ELIZABETH ARSENAULT MD
Radiology (Diagnostic Radiology)
1653 W CONGRESS PKWY
CHICAGO, IL 60612
Cook County (312) 942-5781
ALEX MICHAEL JAMES
Student in an Organized Health Care Education/Training Program
1653 W CONGRESS PKWY
CHICAGO, IL 60612
Cook County (888) 352-7874
WERNER MEIER M.D.
Pediatrics (Neonatal-Perinatal Medicine)
1653 W CONGRESS PKWY
CHICAGO, IL 60612
Cook County (312) 942-7154
UNIVERSITY PATHOLOGISTS P C
Pathology (Anatomic Pathology & Clinical Pathology)
1653 W CONGRESS PKWY
CHICAGO, IL 60612
Cook County (312) 942-5700
RUSH UNIVERSITY MEDICAL CENTER
Clinical Medical Laboratory
1653 W CONGRESS PKWY, ROOM 1188-JELKE
CHICAGO, IL 60612
Cook County (312) 942-2054
DR. PATOULA PANAGOS-BILLIRIS MD
Pediatrics (Neonatal-Perinatal Medicine)
1653 W CONGRESS PKWY, 3 PAVILLION
CHICAGO, IL 60612
Cook County (312) 942-3306
KAREN HARVEY
Nurse Practitioner (Psychiatric/Mental Health)
1653 W CONGRESS PKWY
CHICAGO, IL 60612
Cook County (312) 947-0100

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 Mindy Simpson's NPI number?

The NPI number for Mindy Simpson is 1164477246. It was assigned to this individual provider in the NPPES registry on May 24, 2006. The provider is also known as Mindy L. Grunzke.

Where is Mindy Simpson located?

Mindy Simpson practices at 1653 W Congress Pkwy 1591 Jelke, Chicago, IL 60612. The listed phone number is (312) 942-8114.

What is Mindy Simpson's specialty?

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

Is Mindy Simpson enrolled in Medicare?

Yes. Mindy Simpson is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Mindy Simpson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mindy Simpson reassigns Medicare benefits to 3 organizations: Rush University Medical Center (Chicago, IL), Board Of Trustees Fo The University Of Illinois (Chicago, IL) and Lurie Children's Medical Group Inc (Chicago, IL). 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 Mindy Simpson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mindy Simpson accept?

Health plans from Ambetter Health list Mindy Simpson 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 Mindy Simpson was last updated on August 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.