MATTHEW MALLIN LCSW
NPI 1841884277
Social Worker - Clinical in Fort Atkinson, WI
About Matthew Mallin Lcsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MATTHEW MALLIN LCSW (NPI 1841884277) is an individual clinical provider in Fort Atkinson, Wisconsin, licensed in Wisconsin (7548-123) and active in the NPI registry since February 2021. He is enrolled in Medicare PECOS and maintains a secondary practice location in Fort Atkinson.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Matthew Mallin Lcsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Matthew Mallin reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Fort Atkinson, WI 53538
- Reassigned Medicare billing, Wisconsin enrollment
- 298 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53538 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 7
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 Matthew Mallin's NPI number?
The NPI number for Matthew Mallin is 1841884277. It was assigned to this individual provider in the NPPES registry on February 25, 2021.
Where is Matthew Mallin located?
Matthew Mallin practices at 1520 Madison Ave, Fort Atkinson, WI 53538. The listed phone number is (920) 563-5500.
What is Matthew Mallin's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Matthew Mallin enrolled in Medicare?
Yes. Matthew Mallin is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Matthew Mallin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Matthew Mallin reassigns Medicare benefits to Fort Healthcare, Inc. (Fort Atkinson, 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 Matthew Mallin'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 Matthew Mallin was last updated on October 7, 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.
# Matthew Mallin, LCSW · NPI 1841884277
Clinical provider in Fort Atkinson, Wisconsin. Individual provider, active in the CMS NPPES registry since February 25, 2021.
## Identity
- **NPI:** 1841884277 (Entity type: Individual)
- **Enumerated:** February 25, 2021
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** 7548-123 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 1520 MADISON AVE, Fort Atkinson, WI 53538-3100
- **Phone:** (920) 563-5500
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Fort Healthcare, Inc. (NPI 1811916281, Fort Atkinson, WI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 7, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1841884277) · Data from the CMS NPPES public registry.