1. Home
  2. Directory
  3. Illinois
  4. Oak Lawn
  5. Pediatrics
  6. NPI Profile

DR. KACIE ERIN MCMAHON D.O.
NPI 1417239583
Pediatrics - Neonatal-Perinatal Medicine in Oak Lawn, IL

Active since September 15, 2011PECOS Enrolled
4440 W 95TH ST STE 250N, OAK LAWN, IL 60453(847) 723-5313(847) 723-2338 Get Directions Write a Review

NPPES record last updated: February 20, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jan 27, 2021, Mar 17, 2018 (2 updates tracked since 2018).

About Dr. Kacie Erin Mcmahon D.o. NPPES

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

DR. KACIE ERIN MCMAHON D.O. (NPI 1417239583) is an individual neonatal-perinatal medicine provider in Oak Lawn, Illinois, licensed in Illinois (036135248) and active in the NPI registry since September 2011. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2011).

NPPES Registry Identity

NPI1417239583
Entity TypeIndividualFemale
Primary Taxonomy2080N0001X
Provider Legal NameDR. KACIE ERIN MCMAHONCredential: D.O.
Location Address4440 W 95TH ST STE 250NOak Lawn, IL 60453-2600
Mailing Address29373 Network PlChicago, IL 60673-1293 · (847) 390-5900
Phone(847) 723-5313
Fax(847) 723-2338
Sole ProprietorYes
Medical School CMSOtherGraduated 2011
Enumeration DateSeptember 15, 2011
Last NPPES UpdateFebruary 20, 20262 updates tracked since enumeration
NPPES CertifiedFebruary 20, 2026
✔ NPI 1417239583 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Neonatal-Perinatal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080N0001X
License✔ Licensed in IL · 036135248
Definition
A pediatrician who is the principal care provider for sick newborn infants. Clinical expertise is used for direct patient care and for consulting with obstetrical colleagues to plan for the care of mothers who have high-risk pregnancies.
Also ListedPediatricsTaxonomy 208000000X · License 125059213 (IL)
4440 W 95TH ST STE 250N, Oak Lawn, IL 60453
Open in Google Maps ↗

Secondary Practice Locations 2

Location 12160 S 1st AveMaywood, IL 60153-3328 · Phone (708) 216-3145
Location 2225 E Chicago AveChicago, IL 60611-2991 · Phone (312) 227-7408

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Kacie Erin Mcmahon D.o. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8325524473
PECOS Enrollment IDI20260108002986
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 Kacie Mcmahon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

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

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 5

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

DR. SYED TARIQ KHALIL MD
Pediatrics (Neonatal-Perinatal Medicine)
4440 W 95TH ST STE 250N
OAK LAWN, IL 60453
Cook County (847) 723-5313
SYBELLE CANO NNP
Nurse Practitioner (Neonatal)
4440 W 95TH ST STE 250N
OAK LAWN, IL 60453
Cook County (708) 684-5722
DR. APRIL DAWN JONES D.O.
Pediatrics (Neonatal-Perinatal Medicine)
4440 W 95TH ST STE 250N
OAK LAWN, IL 60453
Cook County (708) 684-5722
DR. BERENICE ARELLANO DNP APRN ACCNS-N NNP
Nurse Practitioner (Neonatal)
4440 W 95TH ST STE 250N
OAK LAWN, IL 60453
Cook County (847) 684-5722
BHAVNA GUPTA M.D
Pediatrics (Neonatal-Perinatal Medicine)
4440 W 95TH ST STE 250N
OAK LAWN, IL 60453
Cook County (847) 723-5313

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 Kacie Mcmahon's NPI number?

The NPI number for Kacie Mcmahon is 1417239583. It was assigned to this individual provider in the NPPES registry on September 15, 2011.

Where is Kacie Mcmahon located?

Kacie Mcmahon practices at 4440 W 95th St Ste 250N, Oak Lawn, IL 60453. The listed phone number is (847) 723-5313.

What is Kacie Mcmahon's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Neonatal-Perinatal Medicine, with taxonomy code 2080N0001X.

Is Kacie Mcmahon enrolled in Medicare?

Yes. Kacie Mcmahon is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Kacie Mcmahon's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kacie Mcmahon reassigns Medicare benefits to Advocate Health & Hospitals Corporation (Oak Lawn, IL). 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 Kacie Mcmahon'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 Kacie Mcmahon was last updated on February 20, 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.