RUSH UNIVERSITY MEDICAL GROUP
NPI 1093819542
Internal Medicine in Chicago, IL

Q: What is Rush University Medical Group's NPI number?

The NPI number for Rush University Medical Group is 1093819542. It was assigned to this organization in the NPPES registry on September 12, 2006. The provider is doing business as Rush University Internists.

Q: What is Rush University Medical Group's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Active since September 12, 2006

1620 W HARRISON ST, CHICAGO, IL 60612(312) 942-5000 Get Directions Write a Review

NPPES record last updated: July 29, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jun 4, 2024, Jul 13, 2021, Mar 4, 2021 (3 updates tracked since 2021).

On this page

About Rush University Medical Group NPPES

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

RUSH UNIVERSITY MEDICAL GROUP (NPI 1093819542), doing business as Rush University Internists, is a healthcare organization registered as an internal medicine in Chicago, Illinois and active in the NPI registry since September 2006. The organization maintains 2 additional practice locations and lists Scott A Halper, Authorized Official, as its authorized official.

NPPES Registry Identity

NPI1093819542

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameRUSH UNIVERSITY MEDICAL GROUP

Location Address1620 W HARRISON STChicago, IL 60612-3801

Mailing Address1700 W Van Buren St, Suite 500Chicago, IL 60612-3218 · (312) 563-2875 · Fax (312) 942-3012

Phone(312) 942-5000

Organization SubpartYesParent: Rush Medical Group

Authorized OfficialScott A HalperAuthorized Official · (312) 942-7770

Enumeration DateSeptember 12, 2006

Last NPPES UpdateJuly 29, 20253 updates tracked since enumeration

NPPES CertifiedJuly 29, 2025

✔ NPI 1093819542 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 15

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedPsychologist · ClinicalTaxonomy 103TC0700X

Also ListedAllergy & Immunology · AllergyTaxonomy 207KA0200X

Also ListedDermatologyTaxonomy 207N00000X

Also ListedEmergency MedicineTaxonomy 207P00000X

Also ListedFamily MedicineTaxonomy 207Q00000X

Also ListedObstetrics & GynecologyTaxonomy 207V00000X

Also ListedOtolaryngologyTaxonomy 207Y00000X

Also ListedPediatricsTaxonomy 208000000X

Also ListedPhysical Medicine & RehabilitationTaxonomy 208100000X

Also ListedPlastic SurgeryTaxonomy 208200000X

Also ListedPsychiatry & Neurology · NeurologyTaxonomy 2084N0400X

Also ListedRadiology · Diagnostic RadiologyTaxonomy 2085R0202X

Also ListedSurgeryTaxonomy 208600000X

Also ListedUrologyTaxonomy 208800000X

1620 W HARRISON ST, Chicago, IL 60612

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Other Names 1

Doing Business AsRush University Internists

Secondary Practice Locations 2

Location 11700 W Van Buren St, Suite 500Chicago, IL 60612-3218 · Phone (312) 563-2875 · Fax (312) 942-3012

Location 21653 W Congress PkwyChicago, IL 60612-3833 · Phone (312) 942-5000

Other Identifiers 1

Other01622355IL · Bc Group

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

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

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Rush University Medical Group is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

2,164

Medicare enrollment records show 2,164 clinicians reassign Medicare billing to Rush University Medical Group, which bills Medicare for the services they deliver. Of these, 184 practice at this address and 1,407 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 67

Nurse Practitioner402

Pediatric Medicine136

Hospitalist130

Internal Medicine127

Emergency Medicine115

Neurology87

Family Practice86

Diagnostic Radiology84

59 other specialties997

Nearest to this location (20)

See all 2,164

Aamina Ahmad

Hospitalist

NPI 1417698713

1620 W HARRISON ST
Chicago, IL 60612

(312) 942-4200

✔ PECOS✔ Accepts MedicareSame address

Michael Brennan, DO, MPH

Critical Care (Intensivists)

NPI 1811550981

1620 W HARRISON ST
Chicago, IL 60612

(312) 942-5000

✔ PECOS✔ Accepts MedicareSame address

Katherine Chandler, DNP

Nurse Practitioner

NPI 1427946318

1620 W HARRISON ST
Chicago, IL 60612

(312) 947-8800

✔ PECOSSame address

Kathryn Crofton, MD

Obstetrics/Gynecology

NPI 1609453513

1620 W HARRISON ST DEPT OF
Chicago, IL 60612

(312) 327-8850

✔ PECOS✔ Accepts MedicareSame address

Amjad Elmashala, MD

Neurology

NPI 1588140552

1620 W HARRISON ST
Chicago, IL 60612

(319) 471-5605

✔ PECOS✔ Accepts MedicareSame address

Wilson Felix Lao, MD

Otolaryngology

NPI 1447889746

1620 W HARRISON ST
Chicago, IL 60612

(312) 563-4409

✔ PECOS✔ Accepts MedicareSame address

Shannon Neal, M.D.

General Surgery

NPI 1275828246

1620 W HARRISON ST
Chicago, IL 60612

(312) 942-5471

✔ PECOS✔ Accepts MedicareSame address

Julie Neborak, M.D.

Sleep Medicine

NPI 1073992202

1620 W HARRISON ST
Chicago, IL 60612

(312) 942-5000

✔ PECOS✔ Accepts MedicareSame address

Manan Shah, MD

Medical Oncology

NPI 1629636683

1620 W HARRISON ST
Chicago, IL 60612

(312) 942-8174

✔ PECOS✔ Accepts MedicareSame address

Elliott Baker

Psychiatry

NPI 1518537307

1620 W HARRISON ST
Chicago, IL 60612

(312) 942-5000

✔ PECOS✔ Accepts MedicareSame address

Ashley Iannantone, MD

Emergency Medicine

NPI 1164172581

1620 W HARRISON ST
Chicago, IL 60612

(312) 942-5000

✔ PECOS✔ Accepts MedicareSame address

Neha Joshi, MD

Pediatric Medicine

NPI 1598926339

1620 W HARRISON ST KELLOGG BUILDING SUITE 708 KELLOGG BUILDING
Chicago, IL 60612

(312) 942-3034

✔ PECOSSame address

Payman Sattar, MD

Cardiovascular Disease (Cardiology)

NPI 1780609057

1620 W HARRISON ST
Chicago, IL 60612

(312) 942-5020

✔ PECOS✔ Accepts MedicareSame address

Lauren Stoll, RDN

Registered Dietitian or Nutrition Professional

NPI 1881563641

1620 W HARRISON ST
Chicago, IL 60612

(312) 942-5800

✔ Accepts MedicareSame address

Jessica Strzepka, MD

Gastroenterology

NPI 1861015976

1620 W HARRISON ST
Chicago, IL 60612

(312) 942-5000

✔ PECOSSame address

Pallavi Babu, PHD

Clinical Psychologist

NPI 1689442386

1620 W HARRISON ST
Chicago, IL 60612

(312) 942-3232

✔ PECOS✔ Accepts MedicareSame address

Carl Pett, MD

Internal Medicine

NPI 1639792179

1620 W HARRISON ST
Chicago, IL 60612

(312) 942-5000

✔ PECOS✔ Accepts MedicareSame address

Gillian Alex, M.D.

Thoracic Surgery

NPI 1851730907

1653 W CONGRESS PKWY
Chicago, IL 60612

(617) 775-4573

✔ PECOS✔ Accepts MedicareSame address

Shehbaz Ansari

Diagnostic Radiology

NPI 1548935745

1653 W CONGRESS PKWY
Chicago, IL 60612

(702) 849-5920

✔ PECOS✔ Accepts MedicareSame address

Shilpa Arora

Rheumatology

NPI 1699127100

1653 W CONGRESS PKWY
Chicago, IL 60612

(888) 352-7874

✔ PECOS✔ Accepts MedicareSame address

See all 2,164 clinicians

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

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 Rush University Medical Group's NPI number?

The NPI number for Rush University Medical Group is 1093819542. It was assigned to this organization in the NPPES registry on September 12, 2006. The provider is doing business as Rush University Internists.

Where is Rush University Medical Group located?

Rush University Medical Group is located at 1620 W Harrison St, Chicago, IL 60612. The listed phone number is (312) 942-5000.

What is Rush University Medical Group's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Rush University Medical Group enrolled in Medicare?

Yes. Rush University Medical Group is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Rush University Medical Group?

According to the CMS Revalidation Reassignment List (October 2026 release), 2,164 clinicians in 67 Medicare specialties reassign their Medicare billing to Rush University Medical Group. A 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 the clinician's services. The largest specialties are Nurse Practitioner (402), Pediatric Medicine (136) and Hospitalist (130). Of these, 184 practice at this address and 1,407 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Rush University Medical Group accept?

Health plans from Ambetter Health and Ambetter Health of Delaware list Rush University Medical Group 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 Rush University Medical Group was last updated on July 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.