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DR. NATALIE LOUISE STEWART M.D.
NPI 1356665244
Pediatrics - Pediatric Critical Care Medicine in Louisville, KY

Active since March 21, 2010PECOS Enrolled
100/100
CMS Quality Rating
200 E CHESTNUT ST, LOUISVILLE, KY 40202(502) 629-6000(502) 629-5865 Get Directions Write a Review

NPPES record last updated: May 19, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 19, 2025, Oct 19, 2020, Jun 15, 2016 (3 updates tracked since 2016).

About Dr. Natalie Louise Stewart M.d. NPPES

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

DR. NATALIE LOUISE STEWART M.D. (NPI 1356665244) is an individual pediatric critical care medicine provider in Louisville, Kentucky, licensed in Kentucky (45901) and active in the NPI registry since March 2010. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1356665244
Entity TypeIndividualFemale
Primary Taxonomy2080P0203X
Provider Legal NameDR. NATALIE LOUISE STEWARTCredential: M.D.
Location Address200 E CHESTNUT STLouisville, KY 40202-1831
Mailing AddressPo Box 776879Chicago, IL 60677-6879 · (502) 588-9490 · Fax (502) 272-5116
Phone(502) 629-6000
Fax(502) 629-5865
Sole ProprietorNo
Enumeration DateMarch 21, 2010
Last NPPES UpdateMay 19, 20253 updates tracked since enumeration
NPPES CertifiedMay 19, 2025
✔ NPI 1356665244 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Pediatric Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080P0203X
License✔ Licensed in KY · 45901
Definition
A pediatrician expert in advanced life support for children from the term or near-term neonate to the adolescent. This competence extends to the critical care management of life-threatening organ system failure from any cause in both medical and surgical patients and to the support of vital physiological functions. This specialist may have administrative responsibilities for intensive care units and also facilitates patient care among other specialists.
Also ListedPediatricsTaxonomy 208000000X · License 45901 (KY)
200 E CHESTNUT ST, Louisville, KY 40202
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Other Names 1

Former Name (1)Natalie Stewart Henderson Md

Other Identifiers 2

Medicaid201231540IN
Medicaid7100172360KY

Accepted Insurance

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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Natalie Louise Stewart M.d. 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 Natalie Stewart reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of Louisville Physicians, Inc.
0.2 mi
Geriatric Psychiatry
401 E CHESTNUT ST, SUITE 610
Louisville, KY 40202
  • Reassigned Medicare billing, Kentucky enrollment
  • 2,337 clinicians in this Medicare group
NPI 1417219148 (502) 813-6600
Norton Children's Medical Group, LLC
10 mi
Clinical Genetics (M.D.)
4803 OLYMPIA PARK PLZ STE 1100
Louisville, KY 40241
  • Reassigned Medicare billing, Kentucky enrollment
  • Medicare enrollment name: Norton Childrens Medical Group LLC
  • 1,008 clinicians in this Medicare group
NPI 1013559921 (502) 272-5336

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.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Promoting Interoperability100
Improvement Activities40

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.

CATHERINE JARRETT PA-C
Physician Assistant (Medical)
200 E CHESTNUT ST, SUITE 303
LOUISVILLE, KY 40202
Jefferson County (502) 629-5552
BENJAMIN MARTIN CHOI SAMPEDRO C.R.N.A.
Nurse Anesthetist, Certified Registered
200 E CHESTNUT ST
LOUISVILLE, KY 40202
Jefferson County (214) 687-0001
KEVIN DANIEL MAHONEY APRN
Nurse Practitioner (Acute Care)
200 E CHESTNUT ST
LOUISVILLE, KY 40202
Jefferson County (502) 634-6767
ANN ADAMS FRASER CRNA
Nurse Anesthetist, Certified Registered
200 E CHESTNUT ST
LOUISVILLE, KY 40202
Jefferson County (502) 629-8000
NORTON HEALTHCARE
Pharmacy (Institutional Pharmacy)
200 E CHESTNUT ST
LOUISVILLE, KY 40202
Jefferson County (502) 629-7273
AARON NEAL SKINNER MD
Internal Medicine
200 E CHESTNUT ST, SUITE 303
LOUISVILLE, KY 40202
Jefferson County (502) 629-5552
DR. KEVIN ANTHONY MARQUES
Obstetrics & Gynecology
200 E CHESTNUT ST
LOUISVILLE, KY 40202
Jefferson County (502) 629-8000
SHAUN MADAHAR M.D.
Internal Medicine
200 E CHESTNUT ST, SERVICE BUILDING SUITE 303
LOUISVILLE, KY 40202
Jefferson County (502) 629-5552

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 Natalie Stewart's NPI number?

The NPI number for Natalie Stewart is 1356665244. It was assigned to this individual provider in the NPPES registry on March 21, 2010. The provider is also known as Natalie Stewart Henderson MD.

Where is Natalie Stewart located?

Natalie Stewart practices at 200 E Chestnut St, Louisville, KY 40202. The listed phone number is (502) 629-6000.

What is Natalie Stewart's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Critical Care Medicine, with taxonomy code 2080P0203X.

Is Natalie Stewart enrolled in Medicare?

Yes. Natalie Stewart is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Natalie Stewart's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Natalie Stewart reassigns Medicare benefits to 2 organizations: University Of Louisville Physicians, Inc. (Louisville, KY) and Norton Children's Medical Group, LLC (Louisville, KY). 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 Natalie Stewart's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Natalie Stewart accept?

Health plans from Anthem Blue Cross and Blue Shield and CareSource list Natalie Stewart 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 Natalie Stewart was last updated on May 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.