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This provider does not allow online scheduling.

Please call 630-322-8300 to schedule an appointment.

Locations

Downers Grove

1327 Butterfield RoadSuite 618Downers Grove, Illinois 60515
630-322-8300

Naperville

808 Rickert DriveSuite 201Naperville, 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 2026 Top Doctor

2026

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.

Always a pleasant experience

5

Apr 1, 2026

Very good first time appointment here. Explains well things I have been dealing with for years.

5

Apr 1, 2026

Dr. And and his entire staff is phenomenal!

5

Mar 31, 2026

As always, very thorough, professional, and timely.

5

Mar 30, 2026

There was a fire alam during the visit because we had to leave the building until Fire departmentGave the okay to return everything was delayed and a bit rushed,

4

Mar 25, 2026

Patient Satisfaction Rating

4.8

645 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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