ESTHER NEFF MERMELSTEIN RN
NPI 1114448776
Nurse Practitioner - Family in New York, NY
About Esther Neff Mermelstein Rn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ESTHER NEFF MERMELSTEIN RN (NPI 1114448776) is an individual family provider in New York, New York, licensed in New Jersey (26NJ00826900) and active in the NPI registry since July 2017. She is enrolled in Medicare PECOS and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses 2
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
Esther Neff Mermelstein Rn 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 Reassignments
5Medicare enrollment records show Esther Mermelstein reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hackensack, NJ 07601
- Reassigned Medicare billing, New Jersey enrollment
- 115 clinicians in this Medicare group
Hackensack, NJ 07601
- Reassigned Medicare billing, New Jersey enrollment
- 90 clinicians in this Medicare group
Hackensack, NJ 07601
- Reassigned Medicare billing, New Jersey enrollment
- 90 clinicians in this Medicare group
New Hyde Park, NY 11042
- Reassigned Medicare billing, New Jersey enrollment
- 417 clinicians in this Medicare group
Lakewood, NJ 08701
- Reassigned Medicare billing, New Jersey enrollment
- 101 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 3
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 10033 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Esther Mermelstein's NPI number?
The NPI number for Esther Mermelstein is 1114448776. It was assigned to this individual provider in the NPPES registry on July 3, 2017.
Where is Esther Mermelstein located?
Esther Mermelstein practices at 90 Laurel Hill Ter Apt 3N, New York, NY 10033. The listed phone number is (201) 286-5398.
What is Esther Mermelstein's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Esther Mermelstein enrolled in Medicare?
Yes. Esther Mermelstein 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 organizations bill Medicare for Esther Mermelstein's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Esther Mermelstein reassigns Medicare benefits to 5 organizations: Ennoble Hc Nj PC (Hackensack, NJ), Ennoble Hc Nj II PC (Hackensack, NJ), Ennoble Hc Nj III PC (Hackensack, NJ), Optum Medical Care Of New Jersey PC (New Hyde Park, NY) and Personal Np Services, LLC (Lakewood, NJ). Each 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 Esther Mermelstein'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 Esther Mermelstein was last updated on September 21, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Esther Neff Mermelstein, RN · NPI 1114448776
Family physician in New York, New York. Individual provider, active in the CMS NPPES registry since July 3, 2017.
## Identity
- **NPI:** 1114448776 (Entity type: Individual)
- **Enumerated:** July 3, 2017
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 26NJ00826900 (New Jersey)
- **Sole proprietor:** No
## Practice location
- **Address:** 90 LAUREL HILL TER APT 3N, New York, NY 10033-1624
- **Phone:** (201) 286-5398
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Ennoble Hc Nj PC (NPI 1306500764, Hackensack, NJ); Ennoble Hc Nj II PC (NPI 1871475806, Hackensack, NJ); Ennoble Hc Nj III PC (NPI 1043192099, Hackensack, NJ); Optum Medical Care Of New Jersey PC (NPI 1578665048, New Hyde Park, NY); Personal Np Services, LLC (NPI 1649658105, Lakewood, NJ) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** September 21, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1114448776) · Data from the CMS NPPES public registry.