SIU YUNG CHOY D.O.
NPI 1679951594
Internal Medicine in Park Ridge, IL
About Siu Yung Choy D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SIU YUNG CHOY D.O. (NPI 1679951594) is an individual internal medicine provider in Park Ridge, Illinois, licensed in Illinois (036147165) and active in the NPI registry since May 2015. She is enrolled in Medicare PECOS, is affiliated with Northshore University Healthsystem - Evanston Hospital, and is a graduate of Arizona College Of Osteopathic Medicine Mid Western University (2015).
NPPES Registry Identity
Specialties & Licenses
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
Siu Yung Choy D.o. 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 Siu Yung Choy reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Park Ridge, IL 60068
- 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.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northshore University Healthsystem - Evanston Hospital
Acute Care Hospitals · Evanston, ILAdvocate Sherman Hospital
Acute Care Hospitals · Elgin, ILAdvocate Lutheran General Hospital
Acute Care Hospitals · Park Ridge, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60068 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 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PARK RIDGE, IL 60068
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 Siu Yung Choy's NPI number?
The NPI number for Siu Yung Choy is 1679951594. It was assigned to this individual provider in the NPPES registry on May 12, 2015.
Where is Siu Yung Choy located?
Siu Yung Choy practices at 1775 Dempster St Rm E592b, Park Ridge, IL 60068. The listed phone number is (847) 723-8080.
What is Siu Yung Choy's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Siu Yung Choy enrolled in Medicare?
Yes. Siu Yung Choy 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 Siu Yung Choy's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Siu Yung Choy reassigns Medicare benefits to Lutheran General Hospital (Park Ridge, 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 Siu Yung Choy's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Siu Yung Choy affiliated with any hospitals?
According to CMS data, Siu Yung Choy is affiliated with Northshore University Healthsystem - Evanston Hospital, Advocate Sherman Hospital and Advocate Lutheran General Hospital.
When was this NPI record last updated?
The NPPES record for Siu Yung Choy was last updated on June 6, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.
# Siu Yung Choy, D.O. · NPI 1679951594
Internal Medicine physician in Park Ridge, Illinois. Individual provider, active in the CMS NPPES registry since May 12, 2015.
## Identity
- **NPI:** 1679951594 (Entity type: Individual)
- **Enumerated:** May 12, 2015
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 036147165 (Illinois)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1775 DEMPSTER ST RM E592B, Park Ridge, IL 60068-1143
- **Phone:** (847) 723-8080 · **Fax:** (847) 723-4378
## 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:** Lutheran General Hospital (NPI 1801809306, Park Ridge, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Arizona College Of Osteopathic Medicine Mid Western University, class of 2015
## Record status
- **NPPES last updated:** June 6, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1679951594) · Data from the CMS NPPES public registry.