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DR. COLLEEN BRIDGET NASH M.D., M.P.H.
NPI 1891029146
Pediatrics - Pediatric Infectious Diseases in Chicago, IL

Active since September 18, 2009PECOS Enrolled
5841 S MARYLAND AVE # MC6054, UNIVERSITY OF CHICAGO MEDICINE, CHICAGO, IL 60637(773) 702-1000(773) 702-1196 Get Directions Write a Review

NPPES record last updated: April 28, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Colleen Bridget Nash M.d., M.p.h. NPPES

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

DR. COLLEEN BRIDGET NASH M.D., M.P.H. (NPI 1891029146) is an individual pediatric infectious diseases provider in Chicago, Illinois, licensed in Illinois (036130390) and active in the NPI registry since September 2009. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1891029146
Entity TypeIndividualFemale
Primary Taxonomy2080P0208X
Provider Legal NameDR. COLLEEN BRIDGET NASHCredential: M.D., M.P.H.
Location Address5841 S MARYLAND AVE # MC6054, UNIVERSITY OF CHICAGO MEDICINEChicago, IL 60637-1447
Mailing Address165 N Canal St, Unit 1320Chicago, IL 60606-1549 · (312) 559-1840
Phone(773) 702-1000
Fax(773) 702-1196
Sole ProprietorYes
Enumeration DateSeptember 18, 2009
Last NPPES UpdateApril 28, 2021
NPPES CertifiedApril 28, 2021
✔ NPI 1891029146 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Pediatric Infectious DiseasesAllopathic & Osteopathic Physicians
Taxonomy Code2080P0208X
License✔ Licensed in IL · 036130390
Definition
A pediatrician trained to care for children in the diagnosis, treatment and prevention of infectious diseases. This specialist can apply specific knowledge to affect a better outcome for pediatric infections with complicated courses, underlying diseases that predispose to unusual or severe infections, unclear diagnoses, uncommon diseases and complex or investigational treatments.
Also ListedPediatricsTaxonomy 208000000X · License 125056108 (IL)
5841 S MARYLAND AVE # MC6054, Chicago, IL 60637
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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, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Colleen Bridget Nash M.d., M.p.h. 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

4

Medicare enrollment records show Colleen Nash reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Cook County
0.8 mi
Primary Care
6337 S WOODLAWN AVE
Chicago, IL 60637
  • Reassigned Medicare billing, Illinois enrollment
  • 1,047 clinicians in this Medicare group
NPI 1497874325 (773) 753-5500
The Board Of Trustees Of The University Of Illinois
2.1 mi
Federally Qualified Health Center (FQHC)
6835 S NORMAL BLVD
Chicago, IL 60621
  • Reassigned Medicare billing, Illinois enrollment
  • 2,127 clinicians in this Medicare group
NPI 1427600345 (312) 355-5801
Rush University Medical Center
5.3 mi
Internal Medicine
1411 S MICHIGAN AVE
Chicago, IL 60605
  • Reassigned Medicare billing, Illinois enrollment
  • Medicare enrollment name: Rush University Medical Group
  • 2,169 clinicians in this Medicare group
NPI 1689165540 (312) 563-0654
Lurie Children's Medical Group Inc
7.5 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 5

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

DR. SHELBY ALEXIS SIEVERS MD
Pediatrics (Pediatric Infectious Diseases)
5841 S MARYLAND AVE # MC6054
CHICAGO, IL 60637
Cook County (773) 702-6176
YEO WON AHN MD
Pediatrics
5841 S MARYLAND AVE # MC6054
CHICAGO, IL 60637
Cook County (773) 702-6176
DAVID D ZHANG
Pediatrics (Pediatric Infectious Diseases)
5841 S MARYLAND AVE # MC6054
CHICAGO, IL 60637
Cook County (773) 834-8518
JUDITH MARIE POPOVICH FNP
Nurse Practitioner (Family)
5841 S MARYLAND AVE # MC6054, ROOM 623
CHICAGO, IL 60637
Cook County (773) 702-5290
DR. MANINDER KAUR M.D.
Pediatrics
5841 S MARYLAND AVE # MC6054
CHICAGO, IL 60637
Cook County (773) 702-0420

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 Colleen Nash's NPI number?

The NPI number for Colleen Nash is 1891029146. It was assigned to this individual provider in the NPPES registry on September 18, 2009.

Where is Colleen Nash located?

Colleen Nash practices at 5841 S Maryland Ave # Mc6054 University Of Chicago Medicine, Chicago, IL 60637. The listed phone number is (773) 702-1000.

What is Colleen Nash's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Infectious Diseases, with taxonomy code 2080P0208X.

Is Colleen Nash enrolled in Medicare?

Yes. Colleen Nash is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Colleen Nash's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Colleen Nash reassigns Medicare benefits to 4 organizations: Cook County (Chicago, IL), The Board Of Trustees Of The University Of Illinois (Chicago, IL), Rush University Medical Center (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 Colleen Nash's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Colleen Nash accept?

Health plans from Ambetter Health and Ambetter Health of Delaware list Colleen Nash 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 Colleen Nash was last updated on April 28, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.