MEET OUR DOCTORS
The region’s most experienced eye care team, specializing in medicine on the forefront of medical technology.
With over 20 years of experience, Dr. Timothy McKernan is dedicated to providing quality eyecare for the whole family. In addition to performing comprehensive eye examinations for vision correction with eyeglasses and contact lenses, Dr. McKernan is therapeutically certified to detect and treat diseases of the eye utilizing state-of-the-art technology.
Dr. McKernan is an alumnus of Grove City College. He continued his education at Pennsylvania College of Optometry where he earned a degree in Vision Sciences and a Doctorate in Optometry.
Dr. Derek O’Donnell is a native of the Butler County Area and is a graduate of Karns City High School. He attended Grove City College, earning a Bachelor’s Degree in Molecular Biology. He continued his education at Nova Southeastern University where he earned a Bachelor’s Degree in Vision Science and a Doctoral Degree in Optometry.
Dr. O’Donnell has received clinical high honors for contact lens and pediatric care, and has continued to strive to offer the most innovative care for his patients. Beyond his role as a primary care optometrist, he was on staff at Elk Regional Health Center in St. Mary’s, PA for emergency room care and hospital consultations involving the eye. His research on the focusing of the eye “accommodation” was published in the Journal of Optometry and has been presented at national optometric conventions. Dr. O’Donnell has been a clinical sub-investigator for multiple FDA studies including the latest innovations in glaucoma treatments, cataract surgery, presbyopia, and dry eye.
Outside of the office, Dr. O’Donnell likes to spend time with his wife and two children. He also enjoys being outdoors hunting and golfing.
Natasha (Tasha) Hindman, OD, has been practicing optometry since 2003. She graduated magna cum laude with a BS in Biochemistry at Roberts Wesleyan College in Rochester, NY, where she also played basketball, captaining her team. She then attended Pennsylvania College of Optometry (now Salus University) where she received a BS in Visual Science as well as her doctorate (OD).
At Scott and Christie Eyecare Associates, Dr. Hindman is the Director of Clinical Research, spending time working with clinical studies and trials to advance the technology of eyecare for the future. Additionally, she enjoys seeing patients of all ages (especially children) for routine exams, as well as treating dry eye, glaucoma, diabetes, and other ocular and systemic issues.
Dr. Hindman has done multiple charitable missions throughout the years traveling to underserved countries in Central and South America as well as Asia to provide free eyecare to people living there. In her spare time she enjoys spending time with her husband, daughter, and stepdaughter, as well as playing and watching sports.
Dr. Shelley Diggins knew at age 13 that she wanted to be an optometrist. (At age 12, she wanted to be an Indiana Jones-style archaeologist. Her family breathed a sigh of relief when she chose optometry instead.) Dr. Diggins also thrived in the sciences at Plum High School, choosing biology as her focus.
Dr. Diggins attended Saint Vincent College where she majored in biology with a minor in education. While at Saint Vincent, she worked as an extern at the Eye Clinic of UPMC. Her experiences there convinced her of optometry as a career choice. Dr. Diggins graduated with a Bachelor of Science in biology and a certification to teach.
Dr. Shelley Diggins went to Philadelphia to Pennsylvania College of Optometry (now Salus University) where she earned her Doctor of Optometry degree. She accepted her first job in Erie, Pennsylvania; there she worked in a customer-service driven optical company where she took care of patient vision needs. Motherhood taught her the necessity of childcare, so she moved back home to the Pittsburgh area.
Corporate optometry was where Dr. Diggins then spent 12 years learning more of compassionate patient care. She realized the importance of caring for and about patients regardless of the office environment. Dr. Diggins then made the transition to Scott & Christie and Associates to provide comprehensive eye care. This setting is ideal, as it allows Dr. Diggins to provide routine, medical and urgent eye care for patients based on their needs. Dr. Diggins realizes the vital need to provide patients the eye care that they need when they need it.
In her free time, Dr. Diggins likes to bike, hike and read. She still finds herself singing the alto part in the church choir and considering voice lessons.
Saint Vincent College, Latrobe, PA
Bachelor of Science in Biology, 1991
Teaching certificate for secondary biology
Pennsylvania College of Optometry, Philadelphia, PA
Doctor of Optometry degree, 1997
Scott & Christie and Associates, Cranberry Township, PA
Uhler Vision Care, Pittsburgh, PA
Scott Family Eye Care, Pittsburgh, PA
Shawnee Optical, Erie, PA
American Optometric Association
Pennsylvania Optometric Association
Dr. Christopher Spearman joined Scott & Christie Eyecare Associates in 2019. He grew up in Marshall Township, PA and attended Penn State University, where he received his degree in Biochemistry and Molecular Biology.
Dr. Spearman received his medical degree from Sidney Kimmel Medical College of Thomas Jefferson University and completed his internship at Lankenau Medical Center. He completed his ophthalmology residency at the University of Wisconsin. Dr. Spearman specializes in the diagnosis and treatment of eye conditions including cataract, glaucoma, macular degeneration, diabetic eye disease, and dry eye disease. For patients undergoing cataract surgery, he offers laser assisted cataract surgery, multifocal lens technology, astigmatism correction, and simultaneous treatment of glaucoma utilizing minimally invasive glaucoma surgery.
Dr. Spearman is a member of the American Academy of Ophthalmology (AAO) and American Society of Cataract and Refractive Surgery (ASCRS). He enjoys spending time with his wife, daughter Emily, and his dog Zoey. His hobbies include snowboarding, SCUBA diving, running, and cooking.