Meet Our Doctors
Wade A. Graham, M.D.
Diseases and Surgery of the Eye
Dr. Graham graduated Summa Cum Laude from Texas Tech University. He earned his M.D. and completed his residency in Ophthalmology at Texas Tech University in Lubbock, Texas. For nine years, Dr. Graham served as Assistant Professor in the Department of Ophthalmology and Director of the Ophthalmology Residency Program at Texas Tech before joining Thurmond Eye Associates in 2008. Dr. Graham is Board Certified by the American Board of Ophthalmology.
Joel G. George, M.D.
Diseases and Surgery of the Eye
Surgery of the Retina and Vitreous
Dr. George graduated Summa Cum Laude from The University of New Mexico with a Bachelor of Science Degree and earned his M.D. at Texas Tech University Health Sciences Center School of Medicine. He completed his residency in Ophthalmology at Texas Tech and his Retina/Vitreous Fellowship at The University of Texas Southwestern. Dr. George is Board Certified by the American Board of Ophthalmology.
Karl C. Bentley, M.D.
Diseases and Surgery of the Eye
Dr. Bentley graduated from The University of Utah with a Bachelor of Arts in Spanish. While in college he played basketball and was a NJCAA Academic All-American. He completed his medical training and Ophthalmology Residency at Texas Tech University School of Medicine where he was the Chief Resident his final year. He is Board Certified by the American Board of Ophthalmology.
Stephen R. Hook, M.D.
Diseases of the Eye
Corneal and External Diseases
Dr. Hook earned his M.D. and completed his fellowship in Ophthalmic Pathology at Baylor College of Medicine. He completed his residency in Ophthalmology and fellowship in Cornea and External Diseases at The University of Texas Medical School in Houston, Texas.
Dr. Hook is Board Certified by the American Board of Ophthalmology. He has published many articles in medical journals.
Deborah Alexander, M.D.
Diseases and Surgery of the Eye
Glaucoma
Dr. Alexander received her M.D. and completed her residency in Ophthalmology at The University of Cincinnati College of Medicine. She completed a Fellowship in Glaucoma at Massachusetts Eye and Ear Infirmary, Harvard Medical School.
Dr. Alexander is Board Certified by the American Board of Ophthalmology.
Christina P. Johnson, M.D.
Diseases of the Eye
Pediatric Ophthalmology
Dr. Johnson is a summa cum laude graduate of Rice University in Houston, where she completed her Bachelor’s degree in Biology. She then attended Baylor College of Medicine, where she earned her Medical Degree with High Honors. She completed residency in Ophthalmology, followed by a Fellowship in Pediatric Ophthalmology at the University of Iowa Hospitals & Clinics. Dr. Johnson is a member of the American Academy of Ophthalmology, and is a Support Leader for the Rio Grande Valley area Tourette Syndrome Association of Texas.
Philip A. Cofoid, M.D.
Diseases and Surgery of the Eye
Born and raised in McAllen, Dr. Cofoid attended Southern Methodist University in Dallas where he earned a Bachelor of Science degree in Civil Engineering. He went on to receive his Doctor of Medicine degree from Texas Tech University School of Medicine. Subsequently, Dr. Cofoid completed an internship at John Peter Smith Hospital in Fort Worth and then went on to an ophthalmology residency at the University of Virginia in Charlottesville, VA.
Dr. Cofoid practices comprehensive ophthalmology with a special interest in cataract surgery, glaucoma care, macular degeneration, and diabetic retinopathy. Dr. Cofoid is excited to be back in the Valley after over a decade away.
Sonia G. Silva, O.D.
Dr. Silva received her B.S. at Texas A & M University in College Station. She completed her Doctor of Optometry at The University of Houston College of Optometry. She has advanced training, and is certified as an Optometric Glaucoma Specialist.lar Therapeutics is an active member of the Rio Grande Valley Optometric Society.
Cassandra Cavazos, O.D.
Dr. Cavazos received her Bachelor’s Degree from the University of Texas in Austin and received her Doctor of Optometry Degree from the University of Houston College Of Optometry. She is Board Certified by The American Board of Optometry. Dr. Cavazos is an active member of The American Optometric Association and The Rio Grande Valley Optometric Society.
Scott Taylor, O.D.
Dr. Taylor attended University of Texas-Pan American in Edinburg and earned a Bachelor of Science Degree. He completed his Doctor of Optometry at The University of Houston College of Optometry. Dr. Taylor is a valley native and had been in both private and group practice’s for the past 30 years. Dr. Taylor is also a member of The Rio Grande Valley Optometric Society.
Denisse A. Lopez De Chacon, O.D.
Dr. Lopez received her Bachelor’s of Science degree at the University of Texas Pan American graduating with honors and with a double minor in Chemistry and Medical Spanish. She received her Doctor of Optometry Degree from the University of the Incarnate Word where she graduated Cum Laude. She is a member of the American Academy of Optometry and the Rio Grande Valley Optometric Society. Dr. Lopez has held numerous leadership positions and has had research experience. She has presented scientific posters and papers at professional conventions.