CHELESSA LEE USSELMAN ACNP-BC, BSN
NPI 1225309230
Nurse Practitioner in Oak Lawn, IL
About Chelessa Lee Usselman Acnp-bc, Bsn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHELESSA LEE USSELMAN ACNP-BC, BSN (NPI 1225309230) is an individual nurse practitioner in Oak Lawn, Illinois, licensed in Illinois (209-011016) and active in the NPI registry since January 2012. She is enrolled in Medicare PECOS, is affiliated with Advocate Christ Hospital & Medical Center, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 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
Chelessa Lee Usselman Acnp-bc, Bsn 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
3Medicare enrollment records show Chelessa Usselman reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oak Lawn, IL 60453
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Advocate Health And Hospitals Corporation
- 4,870 clinicians in this Medicare group
Chicago, IL 60637
- Reassigned Medicare billing, Illinois enrollment
- 635 clinicians in this Medicare group
Westmont, IL 60559
- Reassigned Medicare billing, Illinois enrollment
- 561 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Advocate Christ Hospital & Medical Center
Acute Care Hospitals · Oak Lawn, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60453 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 18
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 Chelessa Usselman's NPI number?
The NPI number for Chelessa Usselman is 1225309230. It was assigned to this individual provider in the NPPES registry on January 23, 2012.
Where is Chelessa Usselman located?
Chelessa Usselman practices at 4400 W 95th St Ste 407, Oak Lawn, IL 60453. The listed phone number is (708) 684-9600.
What is Chelessa Usselman's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Chelessa Usselman enrolled in Medicare?
Yes. Chelessa Usselman 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 Chelessa Usselman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Chelessa Usselman reassigns Medicare benefits to 3 organizations: Advocate Health & Hospitals Corporation (Oak Lawn, IL), The University Of Chicago Medical Center (Chicago, IL) and Edward Health Ventures (Westmont, 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 Chelessa Usselman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Chelessa Usselman affiliated with any hospitals?
According to CMS data, Chelessa Usselman is affiliated with Advocate Christ Hospital & Medical Center.
When was this NPI record last updated?
The NPPES record for Chelessa Usselman was last updated on October 7, 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.
# Chelessa Lee Usselman, ACNP-BC, BSN · NPI 1225309230
Nurse Practitioner physician in Oak Lawn, Illinois. Individual provider, active in the CMS NPPES registry since January 23, 2012.
## Identity
- **NPI:** 1225309230 (Entity type: Individual)
- **Enumerated:** January 23, 2012
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 209-011016 (Illinois)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 4400 W 95TH ST STE 407, Oak Lawn, IL 60453-2654
- **Phone:** (708) 684-9600 · **Fax:** (708) 520-1880
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Advocate Health & Hospitals Corporation (NPI 1912936014, Oak Lawn, IL); The University Of Chicago Medical Center (NPI 1033218128, Chicago, IL); Edward Health Ventures (NPI 1275903494, Westmont, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2011
## Record status
- **NPPES last updated:** October 7, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1225309230) · Data from the CMS NPPES public registry.