MRS. LESLIE GISELLE HERTLING FNP
NPI 1225905466
Nurse Practitioner - Family in Greenlawn, NY
About Mrs. Leslie Giselle Hertling Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. LESLIE GISELLE HERTLING FNP (NPI 1225905466) is an individual family provider in Greenlawn, New York, licensed in New York (F357593-01) and active in the NPI registry since October 2025. She is enrolled in Medicare PECOS, is affiliated with Long Island Jewish Medical Center, and is a graduate of Other (2019).
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 and accepts Medicare assignment
Mrs. Leslie Giselle Hertling Fnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Leslie Hertling reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New Hyde Park, NY 11042
- Reassigned Medicare billing, New York enrollment
- 198 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Long Island Jewish Medical Center
Acute Care Hospitals · New Hyde Park, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11740 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 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GREENLAWN, NY 11740
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 Hertling's NPI number?
The NPI number for Leslie Hertling is 1225905466. It was assigned to this individual provider in the NPPES registry on October 22, 2025.
Where is Leslie Hertling located?
Leslie Hertling practices at 270 Pulaski Rd, Greenlawn, NY 11740. The listed phone number is (631) 427-6060.
What is Leslie Hertling's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Leslie Hertling enrolled in Medicare?
Yes. Leslie Hertling is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Leslie Hertling's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Leslie Hertling reassigns Medicare benefits to North Shore Health System Medical Faculty Group Practice Inc (New Hyde Park, 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 Leslie Hertling's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Leslie Hertling affiliated with any hospitals?
According to CMS data, Leslie Hertling is affiliated with Long Island Jewish Medical Center.
When was this NPI record last updated?
The NPPES record for Leslie Hertling was last updated on October 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Mrs. Leslie Giselle Hertling, FNP · NPI 1225905466
Family physician in Greenlawn, New York. Individual provider, active in the CMS NPPES registry since October 22, 2025.
## Identity
- **NPI:** 1225905466 (Entity type: Individual)
- **Enumerated:** October 22, 2025
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** F357593-01 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 270 PULASKI RD, Greenlawn, NY 11740-1605
- **Phone:** (631) 427-6060
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** North Shore Health System Medical Faculty Group Practice Inc (NPI 1003409061, New Hyde Park, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** October 22, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1225905466) · Data from the CMS NPPES public registry.