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DR. JILLIAN KATERI WAREJKO-ROSSI MD
NPI 1811284920
Pediatrics - Pediatric Nephrology in New Haven, CT

Active since July 09, 2011PECOS EnrolledAccepts Medicare Assignment
73.56/100
CMS Quality Rating
1 PARK STREET, SECTION OF PEDIATRIC NEPHROLOGY, NEW HAVEN, CT 06510(203) 785-4081 Get Directions Write a Review

NPPES record last updated: January 23, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jul 21, 2022, Aug 17, 2017 (2 updates tracked since 2017).

About Dr. Jillian Kateri Warejko-rossi Md NPPES

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

DR. JILLIAN KATERI WAREJKO-ROSSI MD (NPI 1811284920) is an individual pediatric nephrology provider in New Haven, Connecticut, licensed in Connecticut (56725) and active in the NPI registry since July 2011. She is enrolled in Medicare PECOS and is a graduate of University Of Rochester School Of Medicine And Dentistry (2011).

NPPES Registry Identity

NPI1811284920
Entity TypeIndividualFemale
Primary Taxonomy2080P0210X
Provider Legal NameDR. JILLIAN KATERI WAREJKO-ROSSICredential: MD
Location Address1 PARK STREET, SECTION OF PEDIATRIC NEPHROLOGYNew Haven, CT 06510
Mailing Address1 Park Street, Section Of Pediatric NephrologyNew Haven, CT 06510 · (203) 785-4081
Phone(203) 785-4081
Sole ProprietorNo
Medical School CMSUniversity Of Rochester School Of Medicine And DentistryGraduated 2011
Enumeration DateJuly 9, 2011
Last NPPES UpdateJanuary 23, 20252 updates tracked since enumeration
NPPES CertifiedJanuary 23, 2025
✔ NPI 1811284920 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0210X
License✔ Licensed in CT · 56725
Definition
A pediatrician who deals with the normal and abnormal development and maturation of the kidney and urinary tract, the mechanisms by which the kidney can be damaged, the evaluation and treatment of renal diseases, fluid and electrolyte abnormalities, hypertension and renal replacement therapy.
1 PARK STREET, New Haven, CT 06510
Open in Google Maps ↗

Other Names 1

Former Name (1)Dr. Jillian Warejko Md

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.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

Dr. Jillian Kateri Warejko-rossi Md 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.

PECOS PAC ID6608149869
PECOS Enrollment IDI20170911000282
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 Reassignment

Medicare enrollment records show Jillian Warejko-rossi reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Yale University
0.6 mi
Advanced Practice Midwife
100 CHURCH ST S STE 200, YALE SCHOOL OF NURSING
New Haven, CT 06519
  • Reassigned Medicare billing, Connecticut enrollment
  • 3,728 clinicians in this Medicare group
NPI 1124148887 (203) 737-5432

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

73.56/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality75.84
Promoting Interoperability74
Improvement Activities40
Cost51.43

Referred Medical Equipment & Supplies CMS DME claims 4

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tacrolimus, extended release, (envarsus xr), oral, 0.25 mg J7503
Treatment-Chemotherapy · category RH002N
1 supplier19 claims7,440 services$1.22 avg. paid by Medicare
Mycophenolate mofetil, oral, 250 mg J7517
Treatment-Treatment - Miscellaneous · category RX029N
1 supplier11 claims2,640 services$0.20 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511
Treatment-Chemotherapy · category RH012N
1 supplier14 claims14 services$19.00 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period Q0512
Treatment-Chemotherapy · category RH012N
1 supplier17 claims17 services$12.66 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. SAMANTHA IRENE PEPE AUD
Audiologist
1 PARK STREET, WEST PAVILLION 218A
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-8836
CHEYENNE MACNARY BEACH M.D.
Pediatrics (Pediatric Cardiology)
1 PARK STREET, YALE NEW HAVEN HOSPITAL WP2
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 785-4081
BRITTON CONROY KEESHAN MD, MPH
Pediatrics (Pediatric Cardiology)
1 PARK STREET
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 785-4081

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 Jillian Warejko-rossi's NPI number?

The NPI number for Jillian Warejko-rossi is 1811284920. It was assigned to this individual provider in the NPPES registry on July 9, 2011. The provider is also known as Dr. Jillian Warejko MD.

Where is Jillian Warejko-rossi located?

Jillian Warejko-rossi practices at 1 Park Street Section Of Pediatric Nephrology, New Haven, CT 06510. The listed phone number is (203) 785-4081.

What is Jillian Warejko-rossi's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Nephrology, with taxonomy code 2080P0210X.

Is Jillian Warejko-rossi enrolled in Medicare?

Yes. Jillian Warejko-rossi 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 Jillian Warejko-rossi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jillian Warejko-rossi reassigns Medicare benefits to Yale University (New Haven, 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 Jillian Warejko-rossi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Jillian Warejko-rossi accept?

Health plans from Anthem Blue Cross and Blue Shield list Jillian Warejko-rossi 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 Jillian Warejko-rossi was last updated on January 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.