JOAN E FILLA MD
NPI 1851396741
Internal Medicine in La Crosse, WI
About Joan E Filla Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOAN E FILLA MD (NPI 1851396741) is an individual internal medicine provider in La Crosse, Wisconsin, licensed in Wisconsin (39197) and active in the NPI registry since June 2005. She is enrolled in Medicare PECOS, is affiliated with Gundersen Palmer Lutheran Hospital And Clinics, and is a graduate of University Of Wisconsin School Of Medicine (1996).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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
Joan E Filla Md 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
6Medicare enrollment records show Joan Filla reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
La Crosse, WI 54601
- Reassigned Medicare billing, Minnesota and Wisconsin enrollments
- 141 clinicians in this Medicare group
La Crosse, WI 54601
- Reassigned Medicare billing, Wisconsin enrollment
- 1,457 clinicians in this Medicare group
Blair, WI 54616
- Reassigned Medicare billing, Wisconsin enrollment
- 293 clinicians in this Medicare group
Hillsboro, WI 54634
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: St Josephs Health Services Inc
- 282 clinicians in this Medicare group
Boscobel, WI 53805
- Reassigned Medicare billing, Wisconsin enrollment
- 299 clinicians in this Medicare group
Friendship, WI 53934
- Reassigned Medicare billing, Wisconsin enrollment
- 280 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 6
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Gundersen Palmer Lutheran Hospital And Clinics
Critical Access Hospitals · West Union, IAGundersen Lutheran Medical Center
Acute Care Hospitals · La Crosse, WIGundersen St Josephs Hospital And Clinics
Critical Access Hospitals · Hillsboro, WITomah Memorial Hospital
Critical Access Hospitals · Tomah, WIVernon Memorial Hospital
Critical Access Hospitals · Viroqua, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 54601 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 4
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.
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 Joan Filla's NPI number?
The NPI number for Joan Filla is 1851396741. It was assigned to this individual provider in the NPPES registry on June 16, 2005.
Where is Joan Filla located?
Joan Filla practices at 1836 South Ave, La Crosse, WI 54601. The listed phone number is (608) 782-7300.
What is Joan Filla's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Joan Filla enrolled in Medicare?
Yes. Joan Filla 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 Joan Filla's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joan Filla reassigns Medicare benefits to 6 organizations: Gundersen Clinic Ltd (La Crosse, WI), Gundersen Lutheran Medical Center, Inc (La Crosse, WI), Tri-County Memorial Hospital, Inc. (Blair, WI), St. Joseph's Health Services, Inc. (Hillsboro, WI), Memorial Hospital Of Boscobel (Boscobel, WI) and 1 more organization, listed in the Medicare section above. 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 Joan Filla's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Joan Filla accept?
Health plans from Group Health Cooperative-SCW list Joan Filla 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 Joan Filla affiliated with any hospitals?
According to CMS data, Joan Filla is affiliated with Gundersen Palmer Lutheran Hospital And Clinics, Gundersen Lutheran Medical Center, Gundersen St Josephs Hospital And Clinics, Tomah Memorial Hospital and Vernon Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Joan Filla was last updated on January 11, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Joan E Filla, MD · NPI 1851396741
Internal Medicine physician in La Crosse, Wisconsin. Individual provider, active in the CMS NPPES registry since June 16, 2005.
## Identity
- **NPI:** 1851396741 (Entity type: Individual)
- **Enumerated:** June 16, 2005
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 39197 (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
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 6 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); Tri-County Memorial Hospital, Inc. (NPI 1659625192, Blair, WI); St. Joseph's Health Services, Inc. (NPI 1972591410, Hillsboro, WI); Memorial Hospital Of Boscobel (NPI 1306804794, Boscobel, WI); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Wisconsin School Of Medicine, class of 1996
## Record status
- **NPPES last updated:** January 11, 2016
- **Other identifiers:** Medicare PIN 0418 (WI); Medicare UPIN G60115; Medicaid 32384100 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1851396741) · Data from the CMS NPPES public registry.