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Locations

Downers Grove

1327 Butterfield RoadDowners Grove, Illinois 60515
630-322-8300

Naperville

808 Rickert DriveNaperville, Illinois 60540
630-322-8300

About Charles S. Ahn, MD

Philosophy of Care

I believe in treating patients with their best interest in mind and to treat them with compassion as I would want to be treated. I strive to utilize the latest in technology, techniques and expertise in managing patients to obtain the best possible outcomes.

Languages

English

Korean

Clinical Interests

Complex cataract surgeries, Corneal transplantations, Refractive surgery

Personal Interests

Spending time with my family, Humanitarian work involving mission trips to provide both medical and surgical care to those in need, Tennis, Golf, Skiing, Ice hockey

Memberships

American Academy of Ophthalmology

American Society of Cataract and Refractive Surgery

Illinois Association of Ophthalmology

International Society of Refractive Surgery

Awards & Accolades

Castle Connolly 2025 Top Doctor

2025

Chicago Magazine, Top Doctors

2022

Resident Research Fellowship, University of Illinois

2000

Education
Schools
University of MichiganGraduation Date: 1993Degree: MD
Residency
University of Illinois at ChicagoResident in Ophthalmology
Fellowships
University of Utah, John Moran Eye CenterCornea, External Disease and Refractive Surgery
Internships
St. Joseph Mercy HospitalInternal Medicine

Ratings and Comments

Comments are collected in our Press Ganey Patient Satisfaction Surveys. Patients are de-identified to protect confidentiality and patient privacy. Learn more about our patient satisfaction survey.

Dr. Ahn is a wonderful communicator and an excellent Ophthalmologist. You are lucky to have him. Treat him well.

5

Nov 9, 2025

From beginning to end the care provided by Doctor AHN and the staff was excellent.

5

Oct 23, 2025

Dr. Ahn understood at once what the problem was with my eye and was able to correct it immediately.

5

Oct 1, 2025

Good exam by the Doctor, but he provided little feedback about my condition. He never did tell me how my eye pressure was. That is important to me, as I have Glaucoma in my family. He did tell me the condition of my cataract after I asked him. Wish he would share more without me asking.

3.2

Sep 29, 2025

Dr. Ahn's team works efficiently and professionally. They made me feel very comfortable. Very caring and kind.

5

Sep 19, 2025

Patient Satisfaction Rating

4.8

595 Reviews

The Patient Satisfaction Rating score is an average of all responses to care provider related questions on our independent rating system, the Press Ganey Patient Satisfaction Survey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Learn more about our patient satisfaction survey.

Contact Us
Need Help?
Corporate Mailing Address1100 W 31st Street
Downers Grove, Illinois 60515
Main Line - (630) 469 9200Billing Customer Service - (866) 734 7680
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