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GRANT RICHARD HAHN M.D.
NPI 1013250885
Pediatrics - Pediatric Critical Care Medicine in Chicago, IL

Active since March 31, 2013PECOS Enrolled
225 E CHICAGO AVE, CHICAGO, IL 60611(618) 638-2964 Get Directions Write a Review

NPPES record last updated: May 1, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 1, 2024, Aug 12, 2019 (2 updates tracked since 2019).

About Grant Richard Hahn M.d. NPPES

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

GRANT RICHARD HAHN M.D. (NPI 1013250885) is an individual pediatric critical care medicine provider in Chicago, Illinois, licensed in Illinois (036.140711) and active in the NPI registry since March 2013. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1013250885
Entity TypeIndividualMale
Primary Taxonomy2080P0203X
Provider Legal NameGRANT RICHARD HAHNCredential: M.D.
Location Address225 E CHICAGO AVEChicago, IL 60611-2991
Mailing Address2119 W School StChicago, IL 60618-6311 · (618) 638-2964
Phone(618) 638-2964
Sole ProprietorYes
Enumeration DateMarch 31, 2013
Last NPPES UpdateMay 1, 20242 updates tracked since enumeration
NPPES CertifiedMay 1, 2024
✔ NPI 1013250885 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Pediatric Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080P0203X
License✔ Licensed in IL · 036.140711
Definition
A pediatrician expert in advanced life support for children from the term or near-term neonate to the adolescent. This competence extends to the critical care management of life-threatening organ system failure from any cause in both medical and surgical patients and to the support of vital physiological functions. This specialist may have administrative responsibilities for intensive care units and also facilitates patient care among other specialists.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
225 E CHICAGO AVE, Chicago, IL 60611
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Grant Richard Hahn 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 Reassignment

Medicare enrollment records show Grant Hahn reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Lurie Children's Medical Group Inc
Same address
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.

BESSEY ELIZABETH JOSE GEEVARGHESE DO
Pediatrics
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (630) 933-6631
CHRISTINA SOOJIN KIM M.D.
Pediatrics
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (443) 928-7458
JESSICA LAUREN OFFENBACH APN
Nurse Practitioner (Pediatrics)
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (312) 227-4000
MS. JENNY KO LEE APN
Nurse Practitioner (Neonatal)
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (847) 962-6268
ERIN COHEN MD
Pediatrics (Hospice and Palliative Medicine)
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (312) 227-4000
DR. JOSEPH HART COLLINS MD
Psychiatry & Neurology (Neurology with Special Qualifications in Child Neurology)
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (312) 227-3550
ALEXIS LYN HARMON
Student in an Organized Health Care Education/Training Program
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (312) 227-4000
SHANNON JULIA CONWAY MD
Student in an Organized Health Care Education/Training Program
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (312) 227-4000

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 Grant Hahn's NPI number?

The NPI number for Grant Hahn is 1013250885. It was assigned to this individual provider in the NPPES registry on March 31, 2013.

Where is Grant Hahn located?

Grant Hahn practices at 225 E Chicago Ave, Chicago, IL 60611. The listed phone number is (618) 638-2964.

What is Grant Hahn's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Critical Care Medicine, with taxonomy code 2080P0203X.

Is Grant Hahn enrolled in Medicare?

Yes. Grant Hahn is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Grant Hahn's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Grant Hahn reassigns Medicare benefits to Lurie Children's Medical Group Inc (Chicago, IL). The 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 Grant Hahn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Grant Hahn was last updated on May 1, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.