DR. NICHOLAS KARJUN CHAN M.D.
NPI 1396132403
Ophthalmology in Oak Lawn, IL
About Dr. Nicholas Karjun Chan M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NICHOLAS KARJUN CHAN M.D. (NPI 1396132403) is an individual ophthalmology provider in Oak Lawn, Illinois, licensed in Illinois (036152835) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS, is affiliated with Osf Little Company Of Mary Medical Center, and maintains 7 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 7
Accepted Insurance
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. Nicholas Karjun Chan M.d. 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 Nicholas Chan 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
- 23 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 16
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.
Osf Little Company Of Mary Medical Center
Acute Care Hospitals · Evergreen Park, 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.
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 Nicholas Chan's NPI number?
The NPI number for Nicholas Chan is 1396132403. It was assigned to this individual provider in the NPPES registry on April 16, 2015.
Where is Nicholas Chan located?
Nicholas Chan practices at 6201 W 95th St, Oak Lawn, IL 60453. The listed phone number is (708) 636-9393.
What is Nicholas Chan's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Nicholas Chan enrolled in Medicare?
Yes. Nicholas Chan 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 Nicholas Chan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Chan reassigns Medicare benefits to Family Eye Physicians, Ltd (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 Nicholas Chan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Nicholas Chan accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana and Blue Cross and Blue Shield of Oklahoma and 9 other insurers list Nicholas Chan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Nicholas Chan affiliated with any hospitals?
According to CMS data, Nicholas Chan is affiliated with Osf Little Company Of Mary Medical Center.
When was this NPI record last updated?
The NPPES record for Nicholas Chan was last updated on January 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.