MRS. ELLEN F LASSER NURSE PRACTITIONER
NPI 1659582674
Nurse Practitioner - Pediatrics in Cortlandt Manor, NY
About Mrs. Ellen F Lasser Nurse Practitioner NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. ELLEN F LASSER NURSE PRACTITIONER (NPI 1659582674) is an individual pediatrics provider in Cortlandt Manor, New York, licensed in New York (F380025-1) and active in the NPI registry since May 2007. 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)
Mrs. Ellen F Lasser Nurse Practitioner is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Ellen Lasser reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Cortlandt Manor, NY 10567
- Reassigned Medicare billing, New York enrollment
- 307 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 10567 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CORTLANDT MANOR, NY 10567
CORTLANDT MANOR, NY 10567
CORTLANDT MANOR, NY 10567
CORTLANDT MANOR, NY 10567
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 Ellen Lasser's NPI number?
The NPI number for Ellen Lasser is 1659582674. It was assigned to this individual provider in the NPPES registry on May 24, 2007.
Where is Ellen Lasser located?
Ellen Lasser practices at 1985 Crompond Rd, Cortlandt Manor, NY 10567. The listed phone number is (914) 737-3346.
What is Ellen Lasser's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.
Is Ellen Lasser enrolled in Medicare?
Yes. Ellen Lasser is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Ellen Lasser's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ellen Lasser reassigns Medicare benefits to The Westchester Medical Practice, PC (Cortlandt Manor, 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 Ellen Lasser'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 Ellen Lasser was last updated on April 11, 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.
# Mrs. Ellen F Lasser, NURSE PRACTITIONER · NPI 1659582674
Pediatrics physician in Cortlandt Manor, New York. Individual provider, active in the CMS NPPES registry since May 24, 2007.
## Identity
- **NPI:** 1659582674 (Entity type: Individual)
- **Enumerated:** May 24, 2007
- **Primary specialty:** Nurse Practitioner - Pediatrics · taxonomy 363LP0200X
- **State license:** F380025-1 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 1985 CROMPOND RD, Cortlandt Manor, NY 10567-4146
- **Phone:** (914) 737-3346 · **Fax:** (914) 737-3211
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** The Westchester Medical Practice, PC (NPI 1982109120, Cortlandt Manor, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 11, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1659582674) · Data from the CMS NPPES public registry.