CLARE M MCMAHON I MSOT, OTR/L
NPI 1467912725
Occupational Therapist in Oak Lawn, IL
About Clare M Mcmahon I Msot, Otr/l NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CLARE M MCMAHON I MSOT, OTR/L (NPI 1467912725) is an individual occupational therapist in Oak Lawn, Illinois, licensed in Illinois (056.012977) and active in the NPI registry since March 2019. She maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Clare M Mcmahon I Msot, Otr/l is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Clare Mcmahon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Oak Lawn, IL 60453
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Advocate Health And Hospitals Corporation
- 4,870 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
OAK LAWN, IL 60453
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 Clare Mcmahon's NPI number?
The NPI number for Clare Mcmahon is 1467912725. It was assigned to this individual provider in the NPPES registry on March 22, 2019.
Where is Clare Mcmahon located?
Clare Mcmahon practices at 4440 W 95th St, Oak Lawn, IL 60453. The listed phone number is (708) 684-1560.
What is Clare Mcmahon's specialty?
The primary specialty registered for this NPI is Occupational Therapist with taxonomy code 225X00000X.
Is Clare Mcmahon enrolled in Medicare?
Yes. Clare Mcmahon is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Clare Mcmahon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Clare Mcmahon reassigns Medicare benefits to Advocate Health & Hospitals Corporation (Oak Lawn, IL). 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 Clare Mcmahon'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 Clare Mcmahon was last updated on June 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.