MARZENA GRYCZEWSKI APRN
NPI 1548500663
Nurse Practitioner - Family in Newington, CT
About Marzena Gryczewski Aprn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARZENA GRYCZEWSKI APRN (NPI 1548500663) is an individual family provider in Newington, Connecticut, licensed in Connecticut (004919) and active in the NPI registry since February 2013. She is enrolled in Medicare PECOS and is a graduate of Other (2011).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
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
Marzena Gryczewski Aprn 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 Marzena Gryczewski reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Hartford, CT 06102
- Reassigned Medicare billing, Connecticut enrollment
- Also billed through NPI 1770696643 (Connecticut)
- 1,333 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 06111 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 Marzena Gryczewski's NPI number?
The NPI number for Marzena Gryczewski is 1548500663. It was assigned to this individual provider in the NPPES registry on February 27, 2013.
Where is Marzena Gryczewski located?
Marzena Gryczewski practices at 555 Willard Ave # 506, Newington, CT 06111. The listed phone number is (860) 256-1553.
What is Marzena Gryczewski's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Marzena Gryczewski enrolled in Medicare?
Yes. Marzena Gryczewski 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 Marzena Gryczewski's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marzena Gryczewski reassigns Medicare benefits to Hartford Hospital (Hartford, CT). 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 Marzena Gryczewski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marzena Gryczewski accept?
Health plans from Anthem Blue Cross and Blue Shield list Marzena Gryczewski 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.
When was this NPI record last updated?
The NPPES record for Marzena Gryczewski was last updated on April 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Marzena Gryczewski, APRN · NPI 1548500663
Family physician in Newington, Connecticut. Individual provider, active in the CMS NPPES registry since February 27, 2013.
## Identity
- **NPI:** 1548500663 (Entity type: Individual)
- **Enumerated:** February 27, 2013
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 004919 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 555 WILLARD AVE # 506, Newington, CT 06111-2631
- **Phone:** (860) 256-1553 · **Fax:** (860) 667-6799
## 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:** Hartford Hospital (NPI 1407806391, Hartford, CT), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2011
## Record status
- **NPPES last updated:** April 7, 2023
- **Other identifiers:** Medicaid 004049193 (CT)
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Source: [NPI Profile](https://npiprofile.com/npi/1548500663) · Data from the CMS NPPES public registry.