FLORENCE MERCIER OT
NPI 1104197045
Occupational Therapist in Great Neck, NY
About Florence Mercier Ot NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
FLORENCE MERCIER OT (NPI 1104197045) is an individual occupational therapist in Great Neck, New York, licensed in New York (016387) and active in the NPI registry since January 2012. She maintains a secondary practice location in Brooklyn and is a graduate of Other (2020).
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)
Florence Mercier Ot is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Florence Mercier reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Great Neck, NY 11021
- Reassigned Medicare billing, New York enrollment
- 99 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.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
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 Florence Mercier's NPI number?
The NPI number for Florence Mercier is 1104197045. It was assigned to this individual provider in the NPPES registry on January 24, 2012.
Where is Florence Mercier located?
Florence Mercier practices at 475 Northern Blvd Ste 11, Great Neck, NY 11021. The listed phone number is (516) 829-0030.
What is Florence Mercier's specialty?
The primary specialty registered for this NPI is Occupational Therapist with taxonomy code 225X00000X.
Is Florence Mercier enrolled in Medicare?
Yes. Florence Mercier is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Florence Mercier's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Florence Mercier reassigns Medicare benefits to Reddy Care Physical And Occupational Therapy PLLC (Great Neck, NY). 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 Florence Mercier'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 Florence Mercier was last updated on November 5, 2021. 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.