MADISON AREA RENAL SPECIALISTS, SC
NPI 1104834894
Internal Medicine - Nephrology in Fitchburg, WI
About Madison Area Renal Specialists, Sc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MADISON AREA RENAL SPECIALISTS, SC (NPI 1104834894) is a healthcare organization registered as a nephrology in Fitchburg, Wisconsin and active in the NPI registry since August 2006. The organization lists Christoph Eggert, Md, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Madison Area Renal Specialists, Sc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
6Medicare enrollment records show 6 clinicians reassign Medicare billing to Madison Area Renal Specialists, Sc, which bills Medicare for the services they deliver. Of these, 3 practice at this address and 4 within 10 miles. They are listed nearest first.
Clinicians, nearest first (6)
Madison, WI 53713
Madison, WI 53792
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Madison Area Renal Specialists, Sc's NPI number?
The NPI number for Madison Area Renal Specialists, Sc is 1104834894. It was assigned to this organization in the NPPES registry on August 4, 2006.
Where is Madison Area Renal Specialists, Sc located?
Madison Area Renal Specialists, Sc is located at 2840 Index Rd, Fitchburg, WI 53713. The listed phone number is (608) 229-7221.
What is Madison Area Renal Specialists, Sc's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Madison Area Renal Specialists, Sc enrolled in Medicare?
Yes. Madison Area Renal Specialists, Sc is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Madison Area Renal Specialists, Sc?
According to the CMS Revalidation Reassignment List (October 2026 release), 6 clinicians in 2 Medicare specialties reassign their Medicare billing to Madison Area Renal Specialists, Sc. A 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 the clinician's services. The largest specialties are Nephrology (5) and Nurse Practitioner (1). Of these, 3 practice at this address and 4 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Madison Area Renal Specialists, Sc accept?
Health plans from Anthem Blue Cross and Blue Shield, Dean Health Plan and Quartz list Madison Area Renal Specialists, Sc 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 Madison Area Renal Specialists, Sc was last updated on April 9, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Madison Area Renal Specialists, Sc · NPI 1104834894
Nephrology organization in Fitchburg, Wisconsin. Organization record, active in the CMS NPPES registry since August 4, 2006.
## Identity
- **NPI:** 1104834894 (Entity type: Organization)
- **Enumerated:** August 4, 2006
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **Organization subpart:** No
- **Authorized official:** Christoph Eggert, MD
## Practice location
- **Address:** 2840 INDEX RD, Fitchburg, WI 53713-3117
- **Phone:** (608) 229-7221 · **Fax:** (608) 826-2710
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 6 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nephrology (5), Nurse Practitioner (1); 3 practice at this address and 4 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 9, 2021
- **Other identifiers:** Medicaid 21271100 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1104834894) · Data from the CMS NPPES public registry.