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License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

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Specialties & Research

Dr. John Hahn, FACS, MD is board certified in Ophthalmology.

  • He has special expertise in 1 area:
  • Lens Implants (Intraocular Lens Implantation)

Education & Awards

Dr. Hahn graduated from Northwestern University, Chicago.


Dr. Hahn has 4 hospital affiliations:

  • Elmhurst Memorial Hospital 
  • Advocate Good Samaritan Hospital 

> > > > Dr. John Hahn, FACS, MD

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Additional Information
Dr. John M Hahn FACS and MD is a male Ophthalmologist, has 14 years of experience and practices in Ophthalmology.
Where does Dr. John M. Hahn practice?
Dr. John Hahn has 4 office locations.
Dr. John Hahn practices Ophthalmology near Sterling, IL.
Additional practice locations include: Lombard, IL and Dixon, IL.
See Sterling Ophthalmologists.