MS. CLARE MARGARET MORAN MARUSCHAK NP
NPI 1659499309
Nurse Practitioner - Family in Stony Brook, NY
About Ms. Clare Margaret Moran Maruschak Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. CLARE MARGARET MORAN MARUSCHAK NP (NPI 1659499309) is an individual family provider in Stony Brook, New York, licensed in New York (334821) and active in the NPI registry since March 2007. She is enrolled in Medicare PECOS, is affiliated with John T Mather Memorial Hospital Of Port Jefferson, and is a graduate of Other (2006).
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
Ms. Clare Margaret Moran Maruschak Np 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
2Medicare enrollment records show Clare Moran Maruschak reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Stony Brook, NY 11797
- Reassigned Medicare billing, New York enrollment
- 7 clinicians in this Medicare group
Great Neck, NY 11021
- Reassigned Medicare billing, New York enrollment
- 9,353 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 2
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.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
John T Mather Memorial Hospital Of Port Jefferson
Acute Care Hospitals · Port Jefferson, NYSt Charles Hospital
Acute Care Hospitals · Port Jefferson, NYSuny/Stony Brook University Hospital
Acute Care Hospitals · Stony Brook, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11794 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.
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 Clare Moran Maruschak's NPI number?
The NPI number for Clare Moran Maruschak is 1659499309. It was assigned to this individual provider in the NPPES registry on March 27, 2007.
Where is Clare Moran Maruschak located?
Clare Moran Maruschak practices at Hsc Level 3 Room 049, Stony Brook, NY 11794. The listed phone number is (631) 444-2200.
What is Clare Moran Maruschak's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Clare Moran Maruschak enrolled in Medicare?
Yes. Clare Moran Maruschak 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 Clare Moran Maruschak's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Clare Moran Maruschak reassigns Medicare benefits to 2 organizations: Stony Brook Radiation Oncology, University Faculty Practice Corporatio (Stony Brook, NY) and North Shore-Lij Medical PC (Great Neck, 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 Clare Moran Maruschak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Clare Moran Maruschak affiliated with any hospitals?
According to CMS data, Clare Moran Maruschak is affiliated with John T Mather Memorial Hospital Of Port Jefferson, St Charles Hospital and Suny/Stony Brook University Hospital.
When was this NPI record last updated?
The NPPES record for Clare Moran Maruschak was last updated on February 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.
# Ms. Clare Margaret Moran Maruschak, NP · NPI 1659499309
Family physician in Stony Brook, New York. Individual provider, active in the CMS NPPES registry since March 27, 2007.
## Identity
- **NPI:** 1659499309 (Entity type: Individual)
- **Enumerated:** March 27, 2007
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 334821 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** HSC LEVEL 3 ROOM 049, Stony Brook, NY 11794-0001
- **Phone:** (631) 444-2200
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Stony Brook Radiation Oncology, University Faculty Practice Corporatio (NPI 1730126517, Stony Brook, NY); North Shore-Lij Medical PC (NPI 1053688572, Great Neck, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2006
## Record status
- **NPPES last updated:** February 20, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1659499309) · Data from the CMS NPPES public registry.