Marnix E. Heersink, M.D. graduated Magna Cum Laude with a B.A. degree and an M.D. degree from the University of Western Ontario in London, Ontario. His internship was completed at the Royal Victoria Hospital in Montreal, Quebec, while his residency in ophthalmology was performed at Wills Eye Hospital in Philadelphia, Pennsylvania. He completed a fellowship in cataract surgery and intraocular lens implantation in Philadelphia and following his training came to Dothan for his ophthalmology practice.

As a professional, his activities and affiliations are numerous. He is a Fellow and member of a number of Professional Organizations including the American Academy of Ophthalmology, the International College of Surgeons, the American College of Surgeons, the American Society of Cataract and Refractive Surgery and the Royal College of Physicians and Surgeons.

He is certified by the American Board of Eye Surgeons. His professional memberships also include the Houston County Medical Society, the Medical Association of the State of Alabama, the American Intraocular Implant Society and the American Medical Association. Dr. Heersink has a special interest and training in the diagnosis and surgical treatment of cataracts as well as laser vision correction.

Dr. Heersink and his wife, Mary, have six children and reside in Dothan. Dr. Heersink has volunteered and participated in a number of organizations including the Boys Club and the Boy Scouts of America. In addition, he has coached numerous youth sports teams for the City of Dothan. He has been on the Executive Board of Alabama/Florida Council of Boy Scouts and on the Executive Board of the Alabama Institute for the Deaf and Blind.