MS. LESLIE G HOROWITZ ARNP
NPI 1942433990
Nurse Practitioner in Jupiter, FL
About Ms. Leslie G Horowitz Arnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. LESLIE G HOROWITZ ARNP (NPI 1942433990) is an individual nurse practitioner in Jupiter, Florida, licensed in Florida (ARNP1881242) and active in the NPI registry since August 2009. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Ms. Leslie G Horowitz Arnp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Leslie Horowitz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Jupiter, FL 33458
- Reassigned Medicare billing, Florida enrollment
- 80 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
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 33458 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
Reported Quality Measures
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
JUPITER, FL 33458
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 Leslie Horowitz's NPI number?
The NPI number for Leslie Horowitz is 1942433990. It was assigned to this individual provider in the NPPES registry on August 25, 2009.
Where is Leslie Horowitz located?
Leslie Horowitz practices at 601 University Blvd Ste 202, Jupiter, FL 33458. The listed phone number is (561) 658-1323.
What is Leslie Horowitz's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Leslie Horowitz enrolled in Medicare?
Yes. Leslie Horowitz is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Leslie Horowitz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Leslie Horowitz reassigns Medicare benefits to American Arthritis & Rheumatology Associates LLC (Jupiter, FL). 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 Leslie Horowitz'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 Leslie Horowitz was last updated on April 13, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.