DR. JOHN W YANG MD
NPI 1942315312
Ophthalmology in Chicago, IL
About Dr. John W Yang Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN W YANG MD (NPI 1942315312) is an individual ophthalmology provider in Chicago, Illinois and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Northwestern Memorial Hospital, and is a graduate of Northwestern University Feinberg Medical School (1996).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
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
Dr. John W Yang Md 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 John Yang reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Chicago, IL 60611
- Reassigned Medicare billing, Illinois enrollment
- 5 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 14
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northwestern Memorial Hospital
Acute Care Hospitals · Chicago, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60611 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Other Providers at the Same Location NPPES 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHICAGO, IL 60611
CHICAGO, IL 60611
CHICAGO, IL 60611
CHICAGO, IL 60611
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 John Yang's NPI number?
The NPI number for John Yang is 1942315312. It was assigned to this individual provider in the NPPES registry on August 19, 2006.
Where is John Yang located?
John Yang practices at 676 N St Clair #320, Chicago, IL 60611. The listed phone number is (312) 475-1000.
What is John Yang's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is John Yang enrolled in Medicare?
Yes. John Yang 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 John Yang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Yang reassigns Medicare benefits to University Eye Specialists Ltd (Chicago, 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 John Yang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is John Yang affiliated with any hospitals?
According to CMS data, John Yang is affiliated with Northwestern Memorial Hospital.
When was this NPI record last updated?
The NPPES record for John Yang was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Dr. John W Yang, MD · NPI 1942315312
Ophthalmology physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since August 19, 2006.
## Identity
- **NPI:** 1942315312 (Entity type: Individual)
- **Enumerated:** August 19, 2006
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **Sole proprietor:** No
## Practice location
- **Address:** 676 N ST CLAIR, #320, Chicago, IL 60611
- **Phone:** (312) 475-1000 · **Fax:** (312) 475-1006
## 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:** University Eye Specialists Ltd (NPI 1760592398, Chicago, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Northwestern University Feinberg Medical School, class of 1996
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Medicare ID-Type Unspecified 479560; Medicare UPIN H 18073
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Source: [NPI Profile](https://npiprofile.com/npi/1942315312) · Data from the CMS NPPES public registry.