LEANNA MARIE DUERST AA
NPI 1104131796
Anesthesiologist Assistant in La Crosse, WI
About Leanna Marie Duerst Aa NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LEANNA MARIE DUERST AA (NPI 1104131796) is an individual anesthesiologist assistant in La Crosse, Wisconsin, licensed in Wisconsin (1) and active in the NPI registry since August 2010. She is affiliated with Gundersen Lutheran Medical Center and is a graduate of Other (2010).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
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
Leanna Marie Duerst Aa 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 Leanna Duerst reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
La Crosse, WI 54601
- Reassigned Medicare billing, Wisconsin enrollment
- 928 clinicians in this Medicare group
La Crosse, WI 54601
- Reassigned Medicare billing, Wisconsin enrollment
- 1,457 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Gundersen Lutheran Medical Center
Acute Care Hospitals · La Crosse, WIOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LA CROSSE, WI 54601
LA CROSSE, WI 54601
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 Leanna Duerst's NPI number?
The NPI number for Leanna Duerst is 1104131796. It was assigned to this individual provider in the NPPES registry on August 9, 2010. The provider is also known as Leanna Marie Proper Aa.
Where is Leanna Duerst located?
Leanna Duerst practices at 1836 South Ave, La Crosse, WI 54601. The listed phone number is (608) 782-7300.
What is Leanna Duerst's specialty?
The primary specialty registered for this NPI is Anesthesiologist Assistant with taxonomy code 367H00000X.
Is Leanna Duerst enrolled in Medicare?
Yes. Leanna Duerst 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 Leanna Duerst's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Leanna Duerst reassigns Medicare benefits to 2 organizations: Gundersen Clinic Ltd (La Crosse, WI) and Gundersen Lutheran Medical Center, Inc (La Crosse, WI). 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 Leanna Duerst's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Leanna Duerst affiliated with any hospitals?
According to CMS data, Leanna Duerst is affiliated with Gundersen Lutheran Medical Center.
When was this NPI record last updated?
The NPPES record for Leanna Duerst was last updated on March 5, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Leanna Marie Duerst, AA · NPI 1104131796
Anesthesiologist Assistant physician in La Crosse, Wisconsin. Individual provider, active in the CMS NPPES registry since August 9, 2010.
## Identity
- **NPI:** 1104131796 (Entity type: Individual)
- **Enumerated:** August 9, 2010
- **Primary specialty:** Anesthesiologist Assistant · taxonomy 367H00000X
- **State license:** 1 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 1836 SOUTH AVE, La Crosse, WI 54601-5429
- **Phone:** (608) 782-7300
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Gundersen Clinic Ltd (NPI 1851343115, La Crosse, WI); Gundersen Lutheran Medical Center, Inc (NPI 1619210895, La Crosse, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2010
## Record status
- **NPPES last updated:** March 5, 2014
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Source: [NPI Profile](https://npiprofile.com/npi/1104131796) · Data from the CMS NPPES public registry.