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DR. ALISA BRENNAN MD
NPI 1255862744
Pediatrics in Chicago, IL

Active since March 25, 2017PECOS Enrolled
225 E CHICAGO AVE, CHICAGO, IL 60611(800) 543-7362 Get Directions Write a Review

NPPES record last updated: October 18, 2024. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Aug 10, 2023, May 6, 2020, Mar 25, 2017 (3 updates tracked since 2017).

About Dr. Alisa Brennan Md NPPES

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

DR. ALISA BRENNAN MD (NPI 1255862744) is an individual pediatrics provider in Chicago, Illinois, licensed in Illinois (036.152197) and active in the NPI registry since March 2017. She is enrolled in Medicare PECOS and maintains a secondary practice location in Winfield.

NPPES Registry Identity

NPI1255862744
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDR. ALISA BRENNANCredential: MD
Location Address225 E CHICAGO AVEChicago, IL 60611-2991
Mailing Address225 E Chicago AveChicago, IL 60611-2991
Phone(800) 543-7362
Sole ProprietorNo
Enumeration DateMarch 25, 2017
Last NPPES UpdateOctober 18, 20243 updates tracked since enumeration
NPPES CertifiedOctober 18, 2024
✔ NPI 1255862744 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in IL · 036.152197
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
225 E CHICAGO AVE, Chicago, IL 60611
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Secondary Practice Location 1

Location 125 N Winfield RdWinfield, IL 60190-1379 · Phone (630) 933-1602 · Fax (630) 933-6847

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Alisa Brennan Md 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

2

Medicare enrollment records show Alisa Brennan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

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
The University Of Chicago Medical Center
7.5 mi
General Acute Care Hospital
5841 S MARYLAND AVE
Chicago, IL 60637
  • Reassigned Medicare billing, Illinois enrollment
  • 1,905 clinicians in this Medicare group
NPI 1033218128 (773) 702-1530

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60611 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$94.06 typical visit price
range $60.08 – $183.39
Typical copayment $23.51 (range $15.02 – $45.84)
Most-billed visit code 99203
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Alisa Brennan's NPI number?

The NPI number for Alisa Brennan is 1255862744. It was assigned to this individual provider in the NPPES registry on March 25, 2017.

Where is Alisa Brennan located?

Alisa Brennan practices at 225 E Chicago Ave, Chicago, IL 60611. The listed phone number is (800) 543-7362.

What is Alisa Brennan's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Alisa Brennan enrolled in Medicare?

Yes. Alisa Brennan is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Alisa Brennan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alisa Brennan reassigns Medicare benefits to 2 organizations: Lurie Children's Medical Group Inc (Chicago, IL) and The University Of Chicago Medical Center (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 Alisa Brennan'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 Alisa Brennan was last updated on October 18, 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.