MRS. SYDNEY HADLEY DO
NPI 1346982634
Internal Medicine in Oak Lawn, IL
About Mrs. Sydney Hadley Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. SYDNEY HADLEY DO (NPI 1346982634) is an individual internal medicine provider in Oak Lawn, Illinois, licensed in Illinois (036.175126) and active in the NPI registry since April 2022. She is enrolled in Medicare PECOS, is affiliated with Wabash General Hospital 1, and is a graduate of Other (2022).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mrs. Sydney Hadley Do 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Wabash General Hospital 1
Critical Access Hospitals · Mount Carmel, 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 Sydney Hadley's NPI number?
The NPI number for Sydney Hadley is 1346982634. It was assigned to this individual provider in the NPPES registry on April 8, 2022. The provider is also known as Ms. Sydney Shan Do.
Where is Sydney Hadley located?
Sydney Hadley practices at 4440 W 95th St, Oak Lawn, IL 60453. The listed phone number is (708) 684-8000.
What is Sydney Hadley's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Sydney Hadley enrolled in Medicare?
Yes. Sydney Hadley 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.
Is Sydney Hadley affiliated with any hospitals?
According to CMS data, Sydney Hadley is affiliated with Wabash General Hospital 1.
When was this NPI record last updated?
The NPPES record for Sydney Hadley was last updated on August 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Mrs. Sydney Hadley, DO · NPI 1346982634
Internal Medicine physician in Oak Lawn, Illinois. Individual provider, active in the CMS NPPES registry since April 8, 2022.
## Identity
- **NPI:** 1346982634 (Entity type: Individual)
- **Enumerated:** April 8, 2022
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 036.175126 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 4440 W 95TH ST, Oak Lawn, IL 60453-2600
- **Phone:** (708) 684-8000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** August 19, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1346982634) · Data from the CMS NPPES public registry.