MARY CAITLIN STASAITIS
NPI 1982350146
Nurse Practitioner in Chicago, IL
About Mary Caitlin Stasaitis NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY CAITLIN STASAITIS (NPI 1982350146) is an individual nurse practitioner in Chicago, Illinois, licensed in Illinois (209.028934) and active in the NPI registry since February 2022. She is enrolled in Medicare PECOS, is affiliated with Advocate Illinois Masonic Medical Center, and maintains a secondary practice location in Chicago.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
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
Mary Caitlin Stasaitis 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 Reassignment
Medicare enrollment records show Mary Stasaitis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Chicago, IL 60657
- Reassigned Medicare billing, Illinois enrollment
- 4,870 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.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Advocate Illinois Masonic Medical Center
Acute Care Hospitals · Chicago, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60657 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 60657
CHICAGO, IL 60657
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 Mary Stasaitis's NPI number?
The NPI number for Mary Stasaitis is 1982350146. It was assigned to this individual provider in the NPPES registry on February 25, 2022.
Where is Mary Stasaitis located?
Mary Stasaitis practices at 3134 N Clark St, Chicago, IL 60657. The listed phone number is (773) 880-9722.
What is Mary Stasaitis's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Mary Stasaitis enrolled in Medicare?
Yes. Mary Stasaitis 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 organization bills Medicare for Mary Stasaitis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Stasaitis reassigns Medicare benefits to Advocate Health And Hospitals Corp. (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 Mary Stasaitis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Stasaitis accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list Mary Stasaitis as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Mary Stasaitis affiliated with any hospitals?
According to CMS data, Mary Stasaitis is affiliated with Advocate Illinois Masonic Medical Center.
When was this NPI record last updated?
The NPPES record for Mary Stasaitis was last updated on April 9, 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.