Summary

Dr. Charles Ahn is an ophthalmologist with 65 years of medical experience who earned his medical degree from the University of Michigan Medical School. He completed his residency training at St Joseph Mercy Hospital of Ann Arbor and the University of Illinois at Chicago in 1994, with additional residency experience in internal medicine at several institutions including Huron Hospital-Cleveland Clinic and Veterans Affairs Medical Center. Dr. Ahn holds board certification in Nuclear Medicine from the American Board of Nuclear Medicine and communicates with patients in English.

Dr. Ahn practices at Duly Health and Care locations in Naperville and Downers Grove, Illinois, and maintains hospital affiliations with Advocate Good Samaritan Hospital. His ophthalmology practice focuses on treating common eye conditions such as blepharitis and cataracts. He also provides care for cellulitis affecting the eye area. Patients have given him an average rating of 4.7 stars for his care.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.7
  • 65 years of experience
  • 12 insurance plans accepted
  • speaks English
  • Columbus-Cuneo-Cabrini Mc, Internal Medicine; Huron Hosp -Cleveland Clinic, Internal Medicine; Vet Affairs Med Ctr, Internal Medicine; St Michael'S Med Ctr, Internal Medicine; St Michael'S Med Ctr, Flexible Or Transitional Year
  • 32 written reviews
  • 1 award
  • 1 specialty
  • 11 areas of expertise
  • 1 board certification
  • 1 hospital affiliation
  • 2 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Awards

  • Vitals Preferred Provider

    • Vitals Preferred Provider Award
      • Preferred Provider badge recognizes providers that are committed to transparency, responsiveness and great service to patients, and have earned a high patient satisfaction rating.

  • Click for our Methodology

Office Locations

Charles S Ahn has 2 locations

Duly Health and Care

808 Rickert DrNaperville, IL 60540

Duly Health and Care

1327 Butterfield RdDowners Grove, IL 60515

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Charles S Ahn, MD
Dr. Patricia Louise Davis, MD
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Charles S Ahn, MDDr. Patricia Louise Davis, MDDr. Sunil Raichand, MDDr. Ryan Alexander Gallo
OphthalmologyOphthalmologyOphthalmologyOphthalmology
Accepts New Patients Accepts New Patients Accepts New Patients
4.7 
4.5 
3.7 
65 Years of Experience 39 Years of Experience 2 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English Speaks English, Spanish Speaks English
Naperville , ILLisle , ILDowners Grove , ILChicago , IL
Med School: University of Michigan Medical School Med School: Perelman School Of Medicine At University Of Pennsylvania Med School: University Of Miami Leonard M Miller School Of Medicine
Current Profile
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Insurance Plans Accepted by Charles S Ahn

  • Aetna
  • Blue Cross Blue Shield of Illinois
  • Cigna
  • Humana
  • Humana - Medicare (Advantage HMO)
  • Medicare
  • Medicare - Medicare
  • Meritain Health
  • North Shore LIJ CareConnect
  • North Shore LIJ CareConnect - IPA
  • Oscar Health Insurance
  • UnitedHealthcare

Medical Specialties

Charles S Ahn has the following specialty

Specialty Expertise

Charles S Ahn has the following 11 areas of expertise

  • Blindness
  • Cataract
  • Cataract Surgery
  • Corneal Diseases
  • Diabetic Retinopathy
  • Eye Exam
  • Eye Pain
  • Glaucoma
  • Lasik Surgery
  • Macular Degeneration
  • Vision Issues

Certifications, License, & Education

65 Years Experience

Charles S Ahn holds an expired medical license in the state of Illinois. They are board certified in Nuclear Medicine by the American Board of Nuclear Medicine.

Board Certifications

Board certified in Nuclear Medicine by the American Board of Nuclear Medicine.

Medical License

Medical Doctor with an expired medical license in the state of Illinois that expired in 2026.

Education & Training

Residency

Completed their residency at Columbus-Cuneo-Cabrini Mc, Internal Medicine; Huron Hosp -Cleveland Clinic, Internal Medicine; Vet Affairs Med Ctr, Internal Medicine; St Michael'S Med Ctr, Internal Medicine; St Michael'S Med Ctr, Flexible Or Transitional Year, St Joseph Mercy Hospital Of Ann Arbor in 1994, and University Of Illinois At Chicago in 1994.

Medical School

Graduated from University of Michigan Medical School in 1993 and Seoul Natl Univ- Coll Of Med- Chongno-Ku- Seoul- So Korea in 1961.

NPI Number

Charles S Ahn's NPI number is 1942260278.

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Frequently Asked Questions

Is Charles Ahn accepting new patients?
Charles Ahn is accepting new patients on Vitals. View Charles Ahn's profile on Vitals to make an appointment.
How can I make an appointment with Charles Ahn?
You can find contact information for Charles Ahn here on Vitals.
Does Charles Ahn accept my insurance?
You can see the insurance plans that Charles Ahn accepts on their Vitals profile.
What languages does Charles Ahn speak?
Charles Ahn speaks English.
Does Charles Ahn accept virtual/telehealth appointments?
Charles Ahn has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.

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