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DR. KRISTEN NELSON MCMILLAN M.D.
NPI 1992842454
Pediatrics - Pediatric Critical Care Medicine in Oak Lawn, IL

Active since January 31, 2007PECOS Enrolled
4440 W 95TH ST, OAK LAWN, IL 60453(708) 684-5580 Get Directions Write a Review

NPPES record last updated: February 24, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Kristen Nelson Mcmillan M.d. NPPES

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

DR. KRISTEN NELSON MCMILLAN M.D. (NPI 1992842454) is an individual pediatric critical care medicine provider in Oak Lawn, Illinois, licensed in Illinois (036-150029) and active in the NPI registry since January 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1992842454
Entity TypeIndividualFemale
Primary Taxonomy2080P0203X
Provider Legal NameDR. KRISTEN NELSON MCMILLANCredential: M.D.
Location Address4440 W 95TH STOak Lawn, IL 60453-2600
Mailing Address29373 Network PlChicago, IL 60673-1293 · (847) 390-5900
Phone(708) 684-5580
Sole ProprietorNo
Enumeration DateJanuary 31, 2007
Last NPPES UpdateFebruary 24, 2026
NPPES CertifiedFebruary 24, 2026
✔ NPI 1992842454 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
Licenses✔ Licensed in IL · 036-150029✔ Licensed in MD · D64882
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 D64882 (MD)
4440 W 95TH ST, Oak Lawn, IL 60453
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware, Oscar Health.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. Kristen Nelson Mcmillan 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

4

Medicare enrollment records show Kristen Mcmillan reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Advocate Health & Hospitals Corporation
Same address
Medical Specialty
4440 W 95TH ST
Oak Lawn, IL 60453
  • Reassigned Medicare billing, Illinois enrollment
  • Medicare enrollment name: Advocate Health And Hospitals Corporation
  • 4,870 clinicians in this Medicare group
NPI 1912936014 (847) 390-5900
The University Of Chicago Medical Center
8.1 mi
General Acute Care Hospital
5841 S MARYLAND AVE
Chicago, IL 60637
  • Reassigned Medicare billing, Illinois enrollment
  • 1,905 clinicians in this Medicare group
NPI 1033218128 (773) 702-1530
University Of Chicago
8.1 mi
Multi-Specialty
5841 S MARYLAND AVE, UCPG/MC 1099
Chicago, IL 60637
  • Reassigned Medicare billing, Illinois enrollment
  • 2,237 clinicians in this Medicare group
NPI 1821048786 (773) 702-9200
Johns Hopkins University
591 mi
Neurological Surgery
8600 OLD GEORGETOWN RD
Bethesda, MD 20814
  • Reassigned Medicare billing, Maryland enrollment
  • 4,483 clinicians in this Medicare group
NPI 1578569240 (410) 955-5000

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

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.

DR. MARK ADRIAN FAASSE MD
Urology
4440 W 95TH ST
OAK LAWN, IL 60453
Cook County (708) 684-4557
DR. MANDY LUMA ENSHIWAT M.D.
Internal Medicine
4440 W 95TH ST
OAK LAWN, IL 60453
Cook County (708) 684-8000
DR. KIM MARIE MIILLER MA, PSYD
Psychologist (Clinical)
4440 W 95TH ST
OAK LAWN, IL 60453
Cook County (708) 684-7482
JENNIFER MARSIGLIO
Occupational Therapist (Physical Rehabilitation)
4440 W 95TH ST
OAK LAWN, IL 60453
Cook County (708) 684-5425
TRACI LYNN TAGUE MA, CCC-SLP
Speech-Language Pathologist
4440 W 95TH ST
OAK LAWN, IL 60453
Cook County (708) 684-1989
ELIZABETH A FOLLIARD OTR/L
Occupational Therapist
4440 W 95TH ST
OAK LAWN, IL 60453
Cook County (708) 684-5369
MICHAEL CIRONE M.D.
Emergency Medicine
4440 W 95TH ST
OAK LAWN, IL 60453
Cook County (708) 684-5375
ANNA MANILLA
Speech-Language Pathologist
4440 W 95TH ST
OAK LAWN, IL 60453
Cook County (248) 701-7523

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 Kristen Mcmillan's NPI number?

The NPI number for Kristen Mcmillan is 1992842454. It was assigned to this individual provider in the NPPES registry on January 31, 2007.

Where is Kristen Mcmillan located?

Kristen Mcmillan practices at 4440 W 95th St, Oak Lawn, IL 60453. The listed phone number is (708) 684-5580.

What is Kristen Mcmillan's specialty?

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

Is Kristen Mcmillan enrolled in Medicare?

Yes. Kristen Mcmillan is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Kristen Mcmillan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kristen Mcmillan reassigns Medicare benefits to 4 organizations: Advocate Health & Hospitals Corporation (Oak Lawn, IL), The University Of Chicago Medical Center (Chicago, IL), University Of Chicago (Chicago, IL) and Johns Hopkins University (Bethesda, MD). 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 Kristen Mcmillan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Kristen Mcmillan accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list Kristen Mcmillan 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 Kristen Mcmillan was last updated on February 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.