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. Mark Duffy, MD, PHD is board certified in Ophthalmology.
He has special expertise in 4 Areas, including Eye Surgery Ophthalmologic Surgical Procedures, Plastic Surgery (Cosmetic & Reconstructive Surgery), and Plastic Surgery Cosmetic & Reconstructive Surgery.1 more special expertise area
More Specialties & Research
Education & Awards
Dr. Duffy graduated from University of Illinois at Chicago.More Education & Awards
Dr. Duffy has 20 hospital affiliations:
- Aurora BayCare Medical Center
- St. Mary`s Hospital Medical Center-Madison
Accepted Insurance Plans
Dr. Duffy accepts these health insurances in at least one office:
- United Healthcare - 2 plans
- Great-West Healthcare - 2 plans
- Medica Health Plans - 2 plans
- Anthem - 2 plans
- Evercare - 2 plans
- Humana - 2 plans
- Cigna - 2 plans
- Dean Health Plan - 1 plan
More Accepted Insurance
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- Additional Information
- Where does Dr. Mark T. Duffy practice?
Dr. Mark Duffy practices Ophthalmology near Green Bay, WI.
Additional practice locations include: Oshkosh, WI and Muskego, WI.
See Green Bay Ophthalmologists.
- Similar Physician Names
- Dr. Marc Duffy, Dr. Marcel Duffy, Dr. Marcelino Duffy, Dr. Marcellus Duffy, Dr. Marcelo Duffy, Dr. Marco Duffy