Individual Healthcare Provider
Nicholas Karjun Chan, M.D.
Provider's NPPES record last updated: January 5, 2026
Overview
- Entity Type
- Individual Healthcare Provider
- NPI
- 1396132403
- Primary Specialty
- Ophthalmology
- Practice Location
- Oak Lawn, Illinois
- Sole Proprietor
- No
Federal Screening
NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.
List of Excluded Individuals/Entities (LEIE)
HHS Office of Inspector General
No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.
- Source data
- September 10, 2026
- Records indexed
- 84,001
- Screened
- Sep 19, 2026, 12:04 PM UTC
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
SAM.gov Exclusions
U.S. General Services Administration
SAM.gov Exclusions was not checked.
SAM.gov screening is not configured on this deployment. No SAM check has been performed.
- Screened
- Not checked
This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Ophthalmology
Allopathic & Osteopathic Physicians
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.
Taxonomy code 207W00000X
Provider-Reported License Information
- Ophthalmology (Illinois)
- 036152835
Practice Locations
Practice Location
6201 W 95th St
Oak Lawn, Illinois 60453-3888
Phone: (708) 636-9393
Additional Practice Location
259 E Erie St Ste 1520
Chicago, Illinois 60611-3111
Phone: (312) 695-8150
Fax: (312) 695-3652
Additional Practice Location
100 Woodruff Cir Ne
Suite 327
Atlanta, Georgia 30322-1020
Phone: (404) 727-5658
Additional Practice Location
14494 John Humphrey Dr
Orland Park, Illinois 60462-2638
Phone: (708) 226-9393
Fax: (708) 403-5751
Additional Practice Location
4459 N Kedzie Ave
Chicago, Illinois 60625-4785
Phone: (773) 866-2020
Fax: (773) 866-2022
Additional Practice Location
68 W Dundee Rd
Buffalo Grove, Illinois 60089-3758
Phone: (847) 541-3334
Fax: (847) 541-8442
Additional Practice Location
17w682 Butterfield Rd
Oakbrook Terrace, Illinois 60181-4029
Phone: (708) 636-9393
Fax: (708) 636-2022
Additional Practice Location
1760 W Wise Rd
Schaumburg, Illinois 60193-3524
Phone: (708) 636-9393
Fax: (708) 636-2022
Record Information
- Enumeration Date
- April 16, 2015
- Provider's NPPES Record Last Updated
- January 5, 2026
- Certification Date
- January 5, 2026
- NPISignal NPPES Dataset
- August 2026
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