ELIZABETH C GRIESER FNP-C
NPI 1801634365
Nurse Practitioner in Providence, RI
About Elizabeth C Grieser Fnp-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ELIZABETH C GRIESER FNP-C (NPI 1801634365) is an individual nurse practitioner in Providence, Rhode Island, licensed in Rhode Island (APRN04089) and active in the NPI registry since July 2024. She is enrolled in Medicare PECOS, is affiliated with Newport Hospital, and is a graduate of Other (2023).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
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
Elizabeth C Grieser Fnp-c 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 Elizabeth Grieser reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Providence, RI 02903
- Reassigned Medicare billing, Rhode Island enrollment
- 201 clinicians in this Medicare group
Providence, RI 02903
- Reassigned Medicare billing, Rhode Island enrollment
- 1,372 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Newport Hospital
Acute Care Hospitals · Newport, RIRhode Island Hospital
Acute Care Hospitals · Providence, RIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02903 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.
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 Elizabeth Grieser's NPI number?
The NPI number for Elizabeth Grieser is 1801634365. It was assigned to this individual provider in the NPPES registry on July 18, 2024.
Where is Elizabeth Grieser located?
Elizabeth Grieser practices at 593 Eddy St. Claverick 2, Providence, RI 02903. The listed phone number is (401) 444-4000.
What is Elizabeth Grieser's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Elizabeth Grieser enrolled in Medicare?
Yes. Elizabeth Grieser 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 Elizabeth Grieser's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Elizabeth Grieser reassigns Medicare benefits to 2 organizations: Brown Emergency Medicine (Providence, RI) and Lifespan Physician Group, Inc. (Providence, RI). 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 Elizabeth Grieser's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Elizabeth Grieser accept?
Health plans from WellSense Health Plan list Elizabeth Grieser as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Elizabeth Grieser affiliated with any hospitals?
According to CMS data, Elizabeth Grieser is affiliated with Newport Hospital and Rhode Island Hospital.
When was this NPI record last updated?
The NPPES record for Elizabeth Grieser was last updated on July 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Elizabeth C Grieser, FNP-C · NPI 1801634365
Nurse Practitioner physician in Providence, Rhode Island. Individual provider, active in the CMS NPPES registry since July 18, 2024.
## Identity
- **NPI:** 1801634365 (Entity type: Individual)
- **Enumerated:** July 18, 2024
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** APRN04089 (Rhode Island)
- **Sole proprietor:** No
## Practice location
- **Address:** 593 EDDY ST., CLAVERICK 2, Providence, RI 02903
- **Phone:** (401) 444-4000
## 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): Brown Emergency Medicine (NPI 1962455022, Providence, RI); Lifespan Physician Group, Inc. (NPI 1407116643, Providence, RI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2023
## Record status
- **NPPES last updated:** July 17, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1801634365) · Data from the CMS NPPES public registry.