MRS. STEPHANIE ELLEN O'BRIEN CPNP
NPI 1801824487
Nurse Practitioner - Pediatrics in Chicago, IL

Q: What is Stephanie O'brien's NPI number?

The NPI number for Stephanie O'brien is 1801824487. It was assigned to this individual provider in the NPPES registry on June 30, 2006.

Q: What is Stephanie O'brien's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.

Q: When was this NPI record last updated?

The NPPES record for Stephanie O'brien was last updated on September 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.

Active since June 30, 2006PECOS Enrolled

255 E. CHICAGO AVENUE, BOX #30, CHICAGO, IL 60611(312) 227-4795 Get Directions Write a Review

NPPES record last updated: September 7, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Mrs. Stephanie Ellen O'brien Cpnp NPPES

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

MRS. STEPHANIE ELLEN O'BRIEN CPNP (NPI 1801824487) is an individual pediatrics provider in Chicago, Illinois, licensed in Illinois (209004699) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1801824487

Entity TypeIndividualFemale

Primary Taxonomy363LP0200X

Provider Legal NameMRS. STEPHANIE ELLEN O'BRIENCredential: CPNP

Location Address255 E. CHICAGO AVENUE, BOX #30Chicago, IL 60611

Mailing Address2236 W Winona StChicago, IL 60625-1832 · (773) 878-2933

Phone(312) 227-4795

Sole ProprietorNo

Enumeration DateJune 30, 2006

Last NPPES UpdateSeptember 7, 2023

NPPES CertifiedJuly 26, 2021

✔ NPI 1801824487 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · PediatricsPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LP0200X

License✔ Licensed in IL · 209004699

255 E. CHICAGO AVENUE, 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)

Mrs. Stephanie Ellen O'brien Cpnp 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 Stephanie O'brien 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.

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.

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 Stephanie O'brien's NPI number?

The NPI number for Stephanie O'brien is 1801824487. It was assigned to this individual provider in the NPPES registry on June 30, 2006.

Where is Stephanie O'brien located?

Stephanie O'brien practices at 255 E. Chicago Avenue Box #30, Chicago, IL 60611. The listed phone number is (312) 227-4795.

What is Stephanie O'brien's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.

Is Stephanie O'brien enrolled in Medicare?

Yes. Stephanie O'brien is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Stephanie O'brien's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stephanie O'brien 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 Stephanie O'brien'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 Stephanie O'brien was last updated on September 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.