MRS. TAMMY S. ZWEERES APN
NPI 1255690574
Nurse Practitioner in Romeoville, IL
About Mrs. Tammy S. Zweeres Apn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. TAMMY S. ZWEERES APN (NPI 1255690574) is an individual nurse practitioner in Romeoville, Illinois, licensed in Illinois (277004182) and active in the NPI registry since May 2012. She is enrolled in Medicare PECOS, is affiliated with Presence Saint Joseph 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
Mrs. Tammy S. Zweeres Apn 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 Tammy Zweeres reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Des Plaines, IL 60016
- Reassigned Medicare billing, Illinois enrollment
- 443 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 3
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Presence Saint Joseph Medical Center
Acute Care Hospitals · Joliet, ILMorris Hospital & Healthcare Centers
Acute Care Hospitals · Morris, ILPresence Mercy Medical Center
Acute Care Hospitals · Aurora, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60446 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 8
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 Tammy Zweeres's NPI number?
The NPI number for Tammy Zweeres is 1255690574. It was assigned to this individual provider in the NPPES registry on May 7, 2012.
Where is Tammy Zweeres located?
Tammy Zweeres practices at 500 S Weber Rd, Romeoville, IL 60446. The listed phone number is (815) 773-7732.
What is Tammy Zweeres's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Tammy Zweeres enrolled in Medicare?
Yes. Tammy Zweeres 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 Tammy Zweeres's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tammy Zweeres reassigns Medicare benefits to Prime Healthcare Illinois Medical Group LLC (Des Plaines, 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 Tammy Zweeres's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Tammy Zweeres accept?
Health plans from Ambetter Health and Ambetter Health of Delaware list Tammy Zweeres 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 Tammy Zweeres affiliated with any hospitals?
According to CMS data, Tammy Zweeres is affiliated with Presence Saint Joseph Medical Center, Morris Hospital & Healthcare Centers and Presence Mercy Medical Center.
When was this NPI record last updated?
The NPPES record for Tammy Zweeres was last updated on June 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months 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. Tammy S. Zweeres, APN · NPI 1255690574
Nurse Practitioner physician in Romeoville, Illinois. Individual provider, active in the CMS NPPES registry since May 7, 2012.
## Identity
- **NPI:** 1255690574 (Entity type: Individual)
- **Enumerated:** May 7, 2012
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 277004182 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 500 S WEBER RD, Romeoville, IL 60446-6528
- **Phone:** (815) 773-7732
## 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:** Prime Healthcare Illinois Medical Group LLC (NPI 1023837689, Des Plaines, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2011
## Record status
- **NPPES last updated:** June 3, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1255690574) · Data from the CMS NPPES public registry.