Ophthalmologists are medical doctors who specialize in diagnosing and treating eye disease.  They have completed 4 years of medical school, a 1 year internship, a 3 year surgical residency, a rigorous 2-year-long board certification process, and re-certification every 10 years.  SMO has two nationally board-certified ophthalmologists on staff who are up-to-date on the latest developments in diagnostic testing, medical treatment, and micro-surgical techniques.

Optometrists are health professionals trained and licensed to provide non-surgical eye care.  They have completed a minimum of 4 years of college and 4 years of optometry school.  SMO has two optometrist who see patients at the Marshall office and provide comprehensive exams for children and adults, offering glasses, contact lenses, and yearly medical eye exams.




Darren Hathaway, M.D.

Dr. Darren Hathaway completed his undergraduate education at Kalamazoo College and earned his medical degree from Michigan State University, where he was president of his class.  He completed his internship at Naval Hospital in Portsmouth, Virginia, and graduated first in his class from his undersea medicine fellowship at Naval Undersea Medical Institute in Groton, Connecticut.  He then served in the naval submarine fleet as a Diving Medical Officer for six years before completing his residency in ophthalmology at Henry Ford Hospital in Detroit, Michigan where he served as Chief Resident.  He joined Oaklawn Hospital's active staff in June 2002.  Dr. Hathaway is board certified, and has been practicing general ophthalmology in Marshall and Coldwater, Michigan since 2002.


Shannon Martin, M.D.

Dr. Shannon Martin completed her undergraduate education at Denison University in Granville, Ohio and earned her medical degree from Rush Medical College in Chicago, Illinois.  She completed her internship and ophthalmology residency at William Beaumont Hospital in Royal Oak, Michigan, where she served as the program's first Chief Resident.  She joined Oaklawn Hospital's active medical staff in July 2010.  Dr. Martin is board certified, having passed boards in the top 10 percent of all ophthalmologists, and has been practicing general ophthalmology in Marshall, Michigan since 2010.



Teresa Luzunaris, O.D.

Dr. Luzunaris received her Bachelor's Degree from the University of Puerto Rico at Cayey. She completed her Doctor of Optometry degree at the InterAmerican University of Puerto Rico, School of Optometry. Dr. Luzunaris is a native of Puerto Rico and speaks Spanish fluently.

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Naiya Panchal, O.D.

Dr. Panchal received her Bachelor’s Degree from Wartburg College in Waverly, Iowa and her Doctor of Optometry from Illinois College of Optometry. She has been published and recognized for doing research on light perception and on post-concussive impact on eye-tracking ability. Dr. Panchal decided to become an optometrist after seeing the drastic impact vision can have on behavior and quality of life. She strives to maximize visual potential while keeping the patients’ needs and wants in mind. Dr. Panchal is happily married and enjoys kayaking, traveling, watching live entertainment, and curling up to a good book.

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