JOSEPH L MAREK DC
NPI 1457338139
Chiropractor in Frederic, WI
About Joseph L Marek Dc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOSEPH L MAREK DC (NPI 1457338139) is an individual chiropractor in Frederic, Wisconsin, licensed in Wisconsin (3097) and active in the NPI registry since December 2005.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Joseph L Marek Dc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Joseph Marek reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Webster, WI 54893
- Reassigned Medicare billing, Wisconsin enrollment
- 13 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.
Other Providers at the Same Location NPPES
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 Joseph Marek's NPI number?
The NPI number for Joseph Marek is 1457338139. It was assigned to this individual provider in the NPPES registry on December 23, 2005.
Where is Joseph Marek located?
Joseph Marek practices at 101 United Way, Frederic, WI 54837. The listed phone number is (715) 327-4253.
What is Joseph Marek's specialty?
The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.
Is Joseph Marek enrolled in Medicare?
Yes. Joseph Marek is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Joseph Marek's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joseph Marek reassigns Medicare benefits to St. Croix Tribal Council (Webster, 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 Joseph Marek's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Joseph Marek was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.
# Joseph L Marek, DC · NPI 1457338139
Chiropractor provider in Frederic, Wisconsin. Individual provider, active in the CMS NPPES registry since December 23, 2005.
## Identity
- **NPI:** 1457338139 (Entity type: Individual)
- **Enumerated:** December 23, 2005
- **Primary specialty:** Chiropractor · taxonomy 111N00000X
- **State license:** 3097 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 101 UNITED WAY, Frederic, WI 54837
- **Phone:** (715) 327-4253 · **Fax:** (715) 327-4253
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Bills Medicare through:** St. Croix Tribal Council (NPI 1831170091, Webster, WI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 13, 2026
- **Other identifiers:** Medicaid 38878700 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1457338139) · Data from the CMS NPPES public registry.