MRS. ANN ELSA HACKFORT DO
NPI 1538470398
Internal Medicine in Oswego, IL
About Mrs. Ann Elsa Hackfort Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. ANN ELSA HACKFORT DO (NPI 1538470398) is an individual internal medicine provider in Oswego, Illinois, licensed in Illinois (036-133744) and active in the NPI registry since June 2010. She is enrolled in Medicare PECOS, is affiliated with Advocate Good Samaritan Hospital, and maintains a secondary practice location in Naperville.
NPPES Registry Identity
Specialties & Licenses 2
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. Ann Elsa Hackfort Do 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 Ann Hackfort reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Aurora, IL 60506
- Reassigned Medicare billing, Illinois enrollment
- 383 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 9
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 Good Samaritan Hospital
Acute Care Hospitals · Downers Grove, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60543 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
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 Ann Hackfort's NPI number?
The NPI number for Ann Hackfort is 1538470398. It was assigned to this individual provider in the NPPES registry on June 27, 2010.
Where is Ann Hackfort located?
Ann Hackfort practices at 80 Templeton Dr, Oswego, IL 60543. The listed phone number is (630) 554-3456.
What is Ann Hackfort's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Ann Hackfort enrolled in Medicare?
Yes. Ann Hackfort 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 Ann Hackfort's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ann Hackfort reassigns Medicare benefits to Advocate Health And Hospitals Corporation (Aurora, 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 Ann Hackfort's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ann Hackfort accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list Ann Hackfort 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 Ann Hackfort affiliated with any hospitals?
According to CMS data, Ann Hackfort is affiliated with Advocate Good Samaritan Hospital.
When was this NPI record last updated?
The NPPES record for Ann Hackfort was last updated on May 13, 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.
# Mrs. Ann Elsa Hackfort, DO · NPI 1538470398
Internal Medicine physician in Oswego, Illinois. Individual provider, active in the CMS NPPES registry since June 27, 2010.
## Identity
- **NPI:** 1538470398 (Entity type: Individual)
- **Enumerated:** June 27, 2010
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 036-133744 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 80 TEMPLETON DR, Oswego, IL 60543-7000
- **Phone:** (630) 554-3456
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** Advocate Health And Hospitals Corporation (NPI 1003542184, Aurora, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2010
## Record status
- **NPPES last updated:** May 13, 2024
- **Other identifiers:** Medicaid 036133744 (IL)
---
Source: [NPI Profile](https://npiprofile.com/npi/1538470398) · Data from the CMS NPPES public registry.