JADWIGA KRETOWICZ RN, FNP
NPI 1730581893
Nurse Practitioner - Family in Greenwich, CT
About Jadwiga Kretowicz Rn, Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JADWIGA KRETOWICZ RN, FNP (NPI 1730581893) is an individual family provider in Greenwich, Connecticut, licensed in Connecticut (13044) and active in the NPI registry since September 2014. She is enrolled in Medicare PECOS, maintains a secondary practice location in Greenwich, and is a graduate of Other (2023).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 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
Jadwiga Kretowicz Rn, Fnp 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 Jadwiga Kretowicz reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Greenwich, CT 06830
- Reassigned Medicare billing, Connecticut enrollment
- 268 clinicians in this Medicare group
New Haven, CT 06519
- Reassigned Medicare billing, Connecticut enrollment
- 3,728 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 06830 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 19
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GREENWICH, CT 06830
GREENWICH, CT 06830
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 Jadwiga Kretowicz's NPI number?
The NPI number for Jadwiga Kretowicz is 1730581893. It was assigned to this individual provider in the NPPES registry on September 20, 2014.
Where is Jadwiga Kretowicz located?
Jadwiga Kretowicz practices at 77 Lafayette Pl, Greenwich, CT 06830. The listed phone number is (203) 863-3700.
What is Jadwiga Kretowicz's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Jadwiga Kretowicz enrolled in Medicare?
Yes. Jadwiga Kretowicz 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 Jadwiga Kretowicz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jadwiga Kretowicz reassigns Medicare benefits to 2 organizations: Greenwich Hospital (Greenwich, CT) and Yale University (New Haven, CT). 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 Jadwiga Kretowicz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Jadwiga Kretowicz accept?
Health plans from Anthem Blue Cross and Blue Shield list Jadwiga Kretowicz 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 Jadwiga Kretowicz was last updated on July 29, 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.
# Jadwiga Kretowicz, RN, FNP · NPI 1730581893
Family physician in Greenwich, Connecticut. Individual provider, active in the CMS NPPES registry since September 20, 2014.
## Identity
- **NPI:** 1730581893 (Entity type: Individual)
- **Enumerated:** September 20, 2014
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 13044 (Connecticut)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 77 LAFAYETTE PL, Greenwich, CT 06830-5437
- **Phone:** (203) 863-3700
## 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): Greenwich Hospital (NPI 1609846088, Greenwich, CT); Yale University (NPI 1124148887, New Haven, CT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2023
## Record status
- **NPPES last updated:** July 29, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1730581893) · Data from the CMS NPPES public registry.