NATALIE MARIE LEMON
NPI 1154902575
Emergency Medicine in Oak Lawn, IL
About Natalie Marie Lemon NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NATALIE MARIE LEMON (NPI 1154902575) is an individual emergency medicine provider in Oak Lawn, Illinois, licensed in Illinois (036-173497) and active in the NPI registry since April 2021. She is enrolled in Medicare PECOS, is affiliated with Advocate Trinity Hospital, and maintains a secondary practice location in Chicago.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Natalie Marie Lemon 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.
Medicare Billing Reassignment
Medicare enrollment records show Natalie Lemon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Oak Lawn, IL 60453
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Advocate Health And Hospitals Corporation
- 4,870 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Advocate Trinity Hospital
Acute Care Hospitals · Chicago, ILAdvocate Illinois Masonic Medical Center
Acute Care Hospitals · Chicago, ILAdvocate Christ Hospital & Medical Center
Acute Care Hospitals · Oak Lawn, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60453 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
OAK LAWN, IL 60453
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 Lemon's NPI number?
The NPI number for Natalie Lemon is 1154902575. It was assigned to this individual provider in the NPPES registry on April 16, 2021.
Where is Natalie Lemon located?
Natalie Lemon practices at 4440 W 95th St, Oak Lawn, IL 60453. The listed phone number is (708) 684-5354.
What is Natalie Lemon's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Natalie Lemon enrolled in Medicare?
Yes. Natalie Lemon 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 Natalie Lemon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Natalie Lemon 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 Natalie Lemon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Natalie Lemon affiliated with any hospitals?
According to CMS data, Natalie Lemon is affiliated with Advocate Trinity Hospital, Advocate Illinois Masonic Medical Center and Advocate Christ Hospital & Medical Center.
When was this NPI record last updated?
The NPPES record for Natalie Lemon was last updated on June 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.
# Natalie Marie Lemon · NPI 1154902575
Emergency Medicine physician in Oak Lawn, Illinois. Individual provider, active in the CMS NPPES registry since April 16, 2021.
## Identity
- **NPI:** 1154902575 (Entity type: Individual)
- **Enumerated:** April 16, 2021
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 036-173497 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 4440 W 95TH ST, Oak Lawn, IL 60453-2600
- **Phone:** (708) 684-5354 · **Fax:** (708) 684-1028
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Advocate Health & Hospitals Corporation (NPI 1912936014, Oak Lawn, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Loyola University Of Chicago, Stritch School Of Medicine, class of 2022
## Record status
- **NPPES last updated:** June 24, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1154902575) · Data from the CMS NPPES public registry.