MRS. MARIA G BAYAS NP
NPI 1972740660
Nurse Practitioner - Acute Care in Evergreen Park, IL
About Mrs. Maria G Bayas Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. MARIA G BAYAS NP (NPI 1972740660) is an individual acute care provider in Evergreen Park, Illinois, licensed in Illinois (209-001111) and active in the NPI registry since January 2009. She is enrolled in Medicare PECOS, is affiliated with Osf Little Company Of Mary Medical Center, and maintains a secondary practice location in Chicago.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 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
Mrs. Maria G Bayas Np 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 Maria Bayas reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chicago, IL 60637
- Reassigned Medicare billing, Illinois enrollment
- 635 clinicians in this Medicare group
Peoria, IL 61615
- Reassigned Medicare billing, Illinois enrollment
- 2,944 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 2
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.
Osf Little Company Of Mary Medical Center
Acute Care Hospitals · Evergreen Park, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60805 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.
EVERGREEN PARK, IL 60805
EVERGREEN PARK, IL 60805
EVERGREEN PARK, IL 60805
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 Maria Bayas's NPI number?
The NPI number for Maria Bayas is 1972740660. It was assigned to this individual provider in the NPPES registry on January 16, 2009.
Where is Maria Bayas located?
Maria Bayas practices at 2800 W 95th St, Evergreen Park, IL 60805. The listed phone number is (708) 229-4714.
What is Maria Bayas's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.
Is Maria Bayas enrolled in Medicare?
Yes. Maria Bayas 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 Maria Bayas's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Maria Bayas reassigns Medicare benefits to 2 organizations: The University Of Chicago Medical Center (Chicago, IL) and Osf Multi-Specialty Group (Peoria, 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 Maria Bayas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Maria Bayas accept?
Health plans from Ambetter Health list Maria Bayas 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 Maria Bayas affiliated with any hospitals?
According to CMS data, Maria Bayas is affiliated with Osf Little Company Of Mary Medical Center.
When was this NPI record last updated?
The NPPES record for Maria Bayas was last updated on August 29, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Mrs. Maria G Bayas, NP · NPI 1972740660
Acute Care physician in Evergreen Park, Illinois. Individual provider, active in the CMS NPPES registry since January 16, 2009.
## Identity
- **NPI:** 1972740660 (Entity type: Individual)
- **Enumerated:** January 16, 2009
- **Primary specialty:** Nurse Practitioner - Acute Care · taxonomy 363LA2100X
- **State license:** 209-001111 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 2800 W 95TH ST, Evergreen Park, IL 60805-2795
- **Phone:** (708) 229-4714
## 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): The University Of Chicago Medical Center (NPI 1033218128, Chicago, IL); Osf Multi-Specialty Group (NPI 1154908929, Peoria, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Rush Medical College Of Rush University, class of 1998
## Record status
- **NPPES last updated:** August 29, 2019
- **Other identifiers:** Other 209-001111 (IL)
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Source: [NPI Profile](https://npiprofile.com/npi/1972740660) · Data from the CMS NPPES public registry.