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Meet the Optometrists and Staff at The Eye Guys

Our optometric team is here to serve the vision needs of you and your family. Much like you have a favorite go-to for car maintenance or tech issues, we’re your go-to for eye care in Sioux Falls. With years of experience and a commitment to providing personalized care, our team is ready to help you achieve clear, healthy vision in a welcoming and supportive environment.

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Home » Our Optometric Team

Eye Exams & More: How We Care For Your Family

We take pride in fostering long-term relationships with our patients, ensuring every visit is tailored to meet your unique needs. Our team prioritizes patient loyalty, holistic care, and community engagement. We believe in providing not just high-tech solutions for your vision but also guidance on overall eye health, including lifestyle adjustments for long-term well-being.

Our office culture is built on open communication, empathy, and continuous improvement, creating a space where patients of all ages feel valued and cared for. From regular eye exams to advanced treatments, we are here to serve as your trusted partners in eye care.

Our Sioux Falls Eye Doctors

Dr. Jake Diedrich
Dr. Jake Diedrich
Dr. Jake Diedrich grew up in Rochester, NY, and attended Mercyhurst University in Erie, PA, where he graduated in 2015. He went on to earn his optometry degree from MCPHS School of Optometry in Boston, MA, graduating in 2019. Jake enjoys helping people protect and improve their vision, and he...
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Dr. John Sivesind of The Eye Guys, smiling in black clinic uniform.
Dr. John Sivesind
Dr. John Sivesind grew up in Sioux Falls and graduated from Roosevelt High School in 1996. His love for academics and sports took him to Wright State University in Dayton, OH, where he played basketball on a scholarship. He later transferred to Colorado State University, continuing his basketball career and...
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Dr. Matt Clarke of The Eye Guys, smiling in black clinic uniform.
Dr. Matt Clarke
Dr. Matt Clarke, a Sioux Falls native, graduated from Lincoln High School in 2004 before earning his Biology degree from South Dakota State University in 2008. After college, he worked in ethanol research at POET Research Center in Scotland, SD, before pursuing his passion for optometry. In 2009, Dr. Clarke...
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Get to Know Our Friendly Optical Staff

Tanya Salzman
Tanya Salzman
Tanya is a dedicated Optician who loves helping patients see clearly and understand the importance of overall eye health. She enjoys educating patients about their vision options and takes pride in guiding them to the best solutions for both comfort and style. Tanya appreciates being part of a team that...
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Laura Brende from The Eye Guys, smiling in black uniform, straight brown hair.
Laura Brende
As the Optical and Lab Manager, Laura is passionate about the ever-evolving field of eye care. She enjoys the constant learning that comes with advancements in the field, allowing her to provide patients with the best vision solutions. Laura is dedicated to helping patients find the perfect frames, and she...
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Brandy Sivesind from The Eye Guys, holding eyeglasses and smiling.
Brandy Sivesind
Brandy Sivesind is the Clinic Manager, ensuring the practice runs smoothly and providing a welcoming environment for patients. She loves working alongside her husband, Dr. John Sivesind, and is proud to be part of such a fun and positive office atmosphere where patients and staff alike feel at home.  Outside...
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Peggy McClendon from The Eye Guys, smiling in black uniform, long blonde hair.
Peggy McClendon
Our Administrative Assistant and OD Technician, Peggy McClendon, is passionate about helping people and providing top-notch care. She enjoys assisting the eye doctors with patient care, getting to know patients on a personal level, and ensuring their needs are met. For Peggy, every day is an opportunity to make a...
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Morgan T from The Eye Guys, smiling in black clinic uniform and glasses.
Morgan T
As the Administrative Assistant and OD Technician, Morgan plays a key role in ensuring that every patient’s experience is smooth and enjoyable. She is passionate about the eye care industry because she loves helping people see clearly.  One of Morgan’s favorite parts of working at the practice is connecting with...
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Serving Our Community:
Eye Care Beyond the Clinic

Our practice is committed to giving back to the community through ongoing outreach and support initiatives. Our collaboration with the South Dakota School for the Blind and Visually Impaired (SDSBVI) allows us to provide eye care services to visually impaired individuals.

Dr. John Sivesind visits the Flandreau Indian Reservation weekly, offering much-needed eye care to the Santee Dakota people, part of the Sioux tribe. We are also proud to work with Veterans Affairs (VA), providing specialized eye care for veterans to address their vision needs.