TAMMY RAE KARLS NP
NPI 1043933955
Nurse Practitioner in Fond Du Lac, WI
About Tammy Rae Karls Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TAMMY RAE KARLS NP (NPI 1043933955) is an individual nurse practitioner in Fond Du Lac, Wisconsin, licensed in Wisconsin (13153-33) and active in the NPI registry since September 2022. She is enrolled in Medicare PECOS and is a graduate of Other (2022).
NPPES Registry Identity
Specialties & Licenses
Other Names 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
Tammy Rae Karls 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 Reassignment
Medicare enrollment records show Tammy Karls reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Neenah, WI 54956
- Reassigned Medicare billing, Wisconsin enrollment
- 444 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 4
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 54935 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.
FOND DU LAC, WI 54935
FOND DU LAC, WI 54935
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 Karls's NPI number?
The NPI number for Tammy Karls is 1043933955. It was assigned to this individual provider in the NPPES registry on September 26, 2022. The provider is also known as Tammy Smith.
Where is Tammy Karls located?
Tammy Karls practices at 420 E Division St, Fond Du Lac, WI 54935. The listed phone number is (920) 926-8495.
What is Tammy Karls's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Tammy Karls enrolled in Medicare?
Yes. Tammy Karls 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 Karls's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tammy Karls reassigns Medicare benefits to Ascension Medical Group-Fox Valley Wisconsin, Inc (Neenah, WI). 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 Karls's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Tammy Karls accept?
Health plans from Anthem Blue Cross and Blue Shield list Tammy Karls 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.
When was this NPI record last updated?
The NPPES record for Tammy Karls was last updated on September 26, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.