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MARTYNA EWA KARWOWSKA
NPI 1427739267
Nurse Practitioner in New Britain, CT

Active since July 25, 2023PECOS Enrolled
100 GRAND ST, NEW BRITAIN, CT 06052(860) 224-5011 Get Directions Write a Review

NPPES record last updated: July 25, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Martyna Ewa Karwowska NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARTYNA EWA KARWOWSKA (NPI 1427739267) is an individual nurse practitioner in New Britain, Connecticut, licensed in Connecticut (12015) and active in the NPI registry since July 2023. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1427739267
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameMARTYNA EWA KARWOWSKA
Location Address100 GRAND STNew Britain, CT 06052-2016
Mailing Address3 James PlPlainville, CT 06062-2550 · (860) 748-3427
Phone(860) 224-5011
Sole ProprietorNo
Enumeration DateJuly 25, 2023
NPPES CertifiedJuly 25, 2023
✔ NPI 1427739267 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in CT · 12015
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
100 GRAND ST, New Britain, CT 06052
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Martyna Ewa Karwowska is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Martyna Karwowska reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

The Hospital Of Central Connecticut At New Britain General And Bradley
Same address
Hospitalist
100 GRAND ST
New Britain, CT 06052
  • Reassigned Medicare billing, Connecticut enrollment
  • 745 clinicians in this Medicare group
NPI 1063461481 (860) 224-5305
Midstate Medical Center
7.8 mi
General Acute Care Hospital
435 LEWIS AVE
Meriden, CT 06451
  • Reassigned Medicare billing, Connecticut enrollment
  • 505 clinicians in this Medicare group
NPI 1154425288 (860) 696-6287

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 06052 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$93.86 typical visit price
range $60.82 – $183.10
Typical copayment $23.46 (range $15.20 – $45.77)
Most-billed visit code 99203
Established Patient
$106.68 typical visit price
range $19.76 – $149.26
Typical copayment $26.67 (range $4.94 – $37.31)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

MISS NIRMALA BHATT MD
Internal Medicine
100 GRAND ST
NEW BRITAIN, CT 06052
Capitol Planning Region (860) 224-5011
MUHAMMAD YASIR ANWAR MBBS
Hospitalist
100 GRAND ST
NEW BRITAIN, CT 06052
Capitol Planning Region (860) 224-5011
DR. ALEXANDER VDOVENKO M.D.
Pathology (Anatomic Pathology & Clinical Pathology)
100 GRAND ST
NEW BRITAIN, CT 06052
Capitol Planning Region (860) 224-5584
MS. KORTNEY ROSE RIBBECK PA-C
Physician Assistant (Medical)
100 GRAND ST
NEW BRITAIN, CT 06052
Capitol Planning Region (860) 224-5011
SHEILA SANTHAPPA M.D.
Psychiatry & Neurology (Neurology)
100 GRAND ST
NEW BRITAIN, CT 06052
Capitol Planning Region (608) 224-5305
MS. ELLEN ROSENBERG LMSW
Social Worker (Clinical)
100 GRAND ST
NEW BRITAIN, CT 06052
Capitol Planning Region (860) 224-5285
DR. LOUIS GRAFF IV M.D.
Emergency Medicine
100 GRAND ST
NEW BRITAIN, CT 06052
Capitol Planning Region (860) 224-5774
WANDA M KIREJCZYK MD
Radiology (Diagnostic Radiology)
100 GRAND ST
NEW BRITAIN, CT 06052
Capitol Planning Region (860) 225-5556

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 Martyna Karwowska's NPI number?

The NPI number for Martyna Karwowska is 1427739267. It was assigned to this individual provider in the NPPES registry on July 25, 2023.

Where is Martyna Karwowska located?

Martyna Karwowska practices at 100 Grand St, New Britain, CT 06052. The listed phone number is (860) 224-5011.

What is Martyna Karwowska's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Martyna Karwowska enrolled in Medicare?

Yes. Martyna Karwowska is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Martyna Karwowska's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Martyna Karwowska reassigns Medicare benefits to 2 organizations: The Hospital Of Central Connecticut At New Britain General And Bradley (New Britain, CT) and Midstate Medical Center (Meriden, 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 Martyna Karwowska'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 Martyna Karwowska was last updated on July 25, 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.