ELLEN DAILY STEPHEN MD
NPI 1225521776
Internal Medicine - Allergy & Immunology in Chicago, IL
About Ellen Daily Stephen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ELLEN DAILY STEPHEN MD (NPI 1225521776) is an individual allergy & immunology provider in Chicago, Illinois, licensed in Illinois (036.155856) and active in the NPI registry since June 2018. She is enrolled in Medicare PECOS and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Ellen Daily Stephen Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Ellen Stephen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chicago, IL 60612
- Reassigned Medicare billing, Illinois enrollment
- 2,169 clinicians in this Medicare group
Stockton, CA 95210
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
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 60612 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Ellen Stephen's NPI number?
The NPI number for Ellen Stephen is 1225521776. It was assigned to this individual provider in the NPPES registry on June 10, 2018.
Where is Ellen Stephen located?
Ellen Stephen practices at 1725 W Harrison St Ste 117, Chicago, IL 60612. The listed phone number is (312) 942-6296.
What is Ellen Stephen's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Allergy & Immunology, with taxonomy code 207RA0201X.
Is Ellen Stephen enrolled in Medicare?
Yes. Ellen Stephen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Ellen Stephen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ellen Stephen reassigns Medicare benefits to 2 organizations: Rush University Medical Group (Chicago, IL) and Permanente Medical Group Inc (Stockton, CA). 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 Ellen Stephen'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 Ellen Stephen was last updated on August 9, 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.
# Ellen Daily Stephen, MD · NPI 1225521776
Allergy & Immunology physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since June 10, 2018.
## Identity
- **NPI:** 1225521776 (Entity type: Individual)
- **Enumerated:** June 10, 2018
- **Primary specialty:** Internal Medicine - Allergy & Immunology · taxonomy 207RA0201X
- **State license:** 036.155856 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 1725 W HARRISON ST STE 117, Chicago, IL 60612-3848
- **Phone:** (312) 942-6296
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Rush University Medical Group (NPI 1093819542, Chicago, IL); Permanente Medical Group Inc (NPI 1548343510, Stockton, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** August 9, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1225521776) · Data from the CMS NPPES public registry.