JENNIFER SOSTAK AGACNP
NPI 1174912505
Nurse Practitioner - Acute Care in Chicago, IL
About Jennifer Sostak Agacnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JENNIFER SOSTAK AGACNP (NPI 1174912505) is an individual acute care provider in Chicago, Illinois, licensed in Illinois (209011729) and active in the NPI registry since January 2015. She is enrolled in Medicare PECOS and is a graduate of Other (2013).
NPPES Registry Identity
Specialties & Licenses
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
Jennifer Sostak Agacnp 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 Jennifer Sostak 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
- 178 clinicians in this Medicare group
Rockford, IL 61107
- Reassigned Medicare billing, Illinois enrollment
- 562 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHICAGO, IL 60612
CHICAGO, IL 60612
CHICAGO, IL 60612
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 Jennifer Sostak's NPI number?
The NPI number for Jennifer Sostak is 1174912505. It was assigned to this individual provider in the NPPES registry on January 22, 2015.
Where is Jennifer Sostak located?
Jennifer Sostak practices at 1611 W Harrison St, Chicago, IL 60612. The listed phone number is (312) 942-5000.
What is Jennifer Sostak's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.
Is Jennifer Sostak enrolled in Medicare?
Yes. Jennifer Sostak 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 Jennifer Sostak's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jennifer Sostak reassigns Medicare benefits to 2 organizations: Midwest Orthopaedics At Rush, LLC (Chicago, IL) and Orthomidwest, PLLC (Rockford, 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 Jennifer Sostak'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 Jennifer Sostak was last updated on January 22, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Jennifer Sostak, AGACNP · NPI 1174912505
Acute Care physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since January 22, 2015.
## Identity
- **NPI:** 1174912505 (Entity type: Individual)
- **Enumerated:** January 22, 2015
- **Primary specialty:** Nurse Practitioner - Acute Care · taxonomy 363LA2100X
- **State license:** 209011729 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 1611 W HARRISON ST, Chicago, IL 60612-4861
- **Phone:** (312) 942-5000
## 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): Midwest Orthopaedics At Rush, LLC (NPI 1811942451, Chicago, IL); Orthomidwest, PLLC (NPI 1730136474, Rockford, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2013
## Record status
- **NPPES last updated:** January 22, 2015
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Source: [NPI Profile](https://npiprofile.com/npi/1174912505) · Data from the CMS NPPES public registry.