EILEEN MARY O'CONNELL NP-C
NPI 1811278641
Nurse Practitioner - Adult Health in West Islip, NY
About Eileen Mary O'connell Np-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
EILEEN MARY O'CONNELL NP-C (NPI 1811278641) is an individual adult health provider in West Islip, New York, licensed in New York (F301919-1) and active in the NPI registry since September 2011. 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)
Eileen Mary O'connell Np-c is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Eileen O'connell reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
West Islip, NY 11795
- Reassigned Medicare billing, New York enrollment
- 395 clinicians in this Medicare group
West Islip, NY 11795
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Samaritan Medical Services PC
- 209 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 11795 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.
WEST ISLIP, NY 11795
WEST ISLIP, NY 11795
WEST ISLIP, NY 11795
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 Eileen O'connell's NPI number?
The NPI number for Eileen O'connell is 1811278641. It was assigned to this individual provider in the NPPES registry on September 7, 2011.
Where is Eileen O'connell located?
Eileen O'connell practices at 1000 Montauk Hwy, West Islip, NY 11795. The listed phone number is (631) 376-3000.
What is Eileen O'connell's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.
Is Eileen O'connell enrolled in Medicare?
Yes. Eileen O'connell is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Eileen O'connell's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Eileen O'connell reassigns Medicare benefits to 2 organizations: Good Samaritan Hospital Medical Center (West Islip, NY) and Samaritan Medical Services, P.C. (West Islip, NY). 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 Eileen O'connell'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 Eileen O'connell was last updated on September 7, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Eileen Mary O'connell, NP-C · NPI 1811278641
Adult Health physician in West Islip, New York. Individual provider, active in the CMS NPPES registry since September 7, 2011.
## Identity
- **NPI:** 1811278641 (Entity type: Individual)
- **Enumerated:** September 7, 2011
- **Primary specialty:** Nurse Practitioner - Adult Health · taxonomy 363LA2200X
- **State license:** F301919-1 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 1000 MONTAUK HWY, West Islip, NY 11795-4927
- **Phone:** (631) 376-3000
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Good Samaritan Hospital Medical Center (NPI 1518901180, West Islip, NY); Samaritan Medical Services, P.C. (NPI 1124184544, West Islip, NY) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 7, 2011
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Source: [NPI Profile](https://npiprofile.com/npi/1811278641) · Data from the CMS NPPES public registry.