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Doctors & Staff

Meet the experienced and friendly doctors and staff who make Sitterle Vision Source the leading provider of vision care products and services in San Antonio.visionsource-Sitterle-Staff 2022


Scott Sitterle, O.D.

Scott Sitterle, O.D.

Dr. Sitterle opened his practice on Thousand Oaks in 1994. He graduated from the University of Houston College of Optometry in 1990. He currently sees patients Monday-Thursday. He is licensed as an optometric glaucoma specialist and in the diagnosis and treatment of eye disease, injury, and infection.

Dr. Sitterle has been an active member of the Community Bible Church since 1993 and plays trumpet in the praise orchestra. He is also a board member and past vice-president of the Northeast San Antonio Rotary Club. Dr. Sitterle is also a Senior Sales Coordinator for NSA/Juice Plus+, a company that educates the public on the relationship between nutrition and disease and markets fruit and vegetable nutritional supplements. His goal is to help his patients understand that almost 90% of all chronic disease (macular degeneration, cataracts, hypertension, diabetes, arthritis, cancer, auto-immune disease, etc.) can be prevented or managed through proper nutrition.

Most people don’t know, but Dr. Sitterle volunteered as a radio DJ on 91.3 FM from 1990-1994. His favorite past-time besides music is chillin’ in the sun. Favorite spots are the beach, lake, river, or pool; anywhere there is sun and water. He and his wife, Gloria, have been married since 1990 and have two sons, Philip, who works at Samsung in Austin, and Clifton, who is studying to be a Vet at Texas A&M.

Nicole Maldonado, O.D.

Nicole Maldonado, O.D.

Dr. Nicole Maldonado was born and raised, right here, in our hometown of San Antonio, Texas. After graduating from O’Connor High School, she attended St. Mary’s University where she received her Bachelor of Science Degree in Biology. Dr. Maldonado then attended the University of Houston College of Optometry in Houston, Texas, where she earned her Doctorate of Optometry Degree. Her training includes externship rotations at the Robert Cizik Eye Clinic at Memorial Hermann Hospital and at the South Texas Veteran’s Administration where she focused on retinal pathology and ocular disease.

She loves talking with her patients, relaxing with family, country dancing, vacationing at the beach and last, but definitely not least, Go Spurs Go!

Photo of Dr. Mata

Marlen Mata, O.D.

Dr. Marlen Mata is a therapeutic optometrist and optometric glaucoma specialist. She is a Georgia native but has been calling San Antonio home since 2012. Dr. Mata knew she wanted to pursue optometry after a high school field trip to an exhibition called Dialogue in the Dark, which highlighted the day-to-day lives of those who are visually impaired. She then followed to receive her Bachelor of Science degree in Biology with Honors from the University of Texas at San Antonio and her Doctor of Optometry degree from the University of the Incarnate Word Rosenberg School of Optometry in San Antonio, Texas. Upon graduation, Dr. Mata topped off her education with an Ocular Disease and Glaucoma residency at a VA in Illinois. Dr. Mata is energetic and passionate about eye care and remains an active member of the American Optometric Association and the Texas Optometric Association

Outside of work, Dr. Mata enjoys running, crocheting, and spending time with Nori, her Sphynx cat.



Nicole – Optician

Hi, I’m Nicole. I have been in the optometry field since 2012 but am new to this office in 2017. I enjoy being a part of this business because I always find myself learning something new. My fav part of my job would be patient satisfaction. I believe in treating a patient the way I would like to be treated. Outside of the office, I like taking my daughter on mini adventures around San Antonio, just taking in the beauty around us.

ChadChad, CPO – Optician

Chad is the coolest member of the staff (in his own mind), joining our awesome team in March 2009. He has been in the optical field for 7 years and is an expert at optical sales and eyeglass styling and fitting. Lastly, Tampa Bay isn’t a real football team….Go Cowboys!! Like Dr. Nooshin, he also runs many half marathons (again-in his own mind)!


Braeden – Optometric Assistant

Hello. My name is Braeden, and I’m a current student at the University of the Incarnate Word. I was not born here in Texas, however, I have lived here the majority of my life and I love it. Some of my hobbies include listening to music, learning new skills, and definitely meeting new people. I love to better my social skills and getting involved in my community. I live my life to the fullest trying not to let the negatives get in my way of progressing and lastly, I thank God for all the things he has done, not only in my life but in everyone else’s as well.


Genna – Optometric Technician

Hi, I’m Genna, I graduated from O’Connor High School in 2010. I’m new to the office but have been in the optometry field since 2014. In my free time, I love spending time with my husband and my pet bird Yuki. I also enjoy live music, hiking, and of course wine!

Photo of Nicole

Nicole – Optician

Hi, I’m Nicole and I have been blessed to be an optician for over 30 years. It is my passion and I love helping people pick out the perfect pair of glasses! I started my career in Houston, Texas in 1992 and moved to San Antonio in 2000. I have worked for small shops and large corporations, and I must say I love the independent optometrists the most. I am a crazy cat lady and love eyeglass accessories with cats, like socks with cats wearing glasses!


Sandra – Insurance and Billing Specialist

Hello, my name is Sandra Gonzalez. I recently moved to San Antonio Texas but I was born and raised in Laredo, TX. I’ve worked in the optometry field for over 20 years. I am an Insurance and Billing Specialist to Sitterle Vision Source. I love meeting new people and enjoy helping others. On my spare time I love spending time with family, BBQs, and 80’s music.

Photo of Kylee

Kylee – Optometric Technician

My name is Kylee and I’m originally from Washington state. The military has just recently brought us to Texas and I absolutely love it! Back in 2018 I graduated from Washington State University with my Bachelor’s degree in Elementary Education and an endorsement in Middle-Level Math. As much as I loved teaching, it was time to try something new and that’s how I ended up here. I have a passion for helping others and I love seeing people smile!

In my free time, I enjoy watching sports, reading, cooking, and spending time with my fiance and our dogs.

Zach – Optician

Howdy, my name is Zach I’m new to optometry and learning how everything works. I’m from San Antonio and graduated from Roosevelt high school in 2020, I love watching football and going hunting.

SarahSarah – Optometric Technician

Hi, my name is Sarah and I’m new to the Optometry field. I am born and raised here in San Antonio Texas and I’m currently enrolled at San Antonio College, studying Criminal Justice but found a love for optometry at the most unexpected time. I absolutely love working one on one with patients and being able to be a stepping stone for a better and clearer life.

In my free time I love singing on stage for God, hanging out with my dogs, watching Marvel movies with my dad, cooking and eating different cuisines with my mom (especially eating), and doing game nights with family and friends

Photo of MoniqueMonique – Optometric Technician

Embracing tech by day, managing contacts like a pro. Schooling for radio/TV, aspiring to bring positivity to your screens. Baking enthusiast doubling as a security guard – because even cupcakes need protection! Look for me on TV, securing virtual realms and sweet treats alike!

Grace – Front Desk CoordinatorGrace

Hi, my name is Grace. I was born and raised here in San Antonio. I love coming to work and being able to assist patients with anything they need.

When I’m not at work I’m almost always with my family. I also love to paint and go thrifting with my sisters!!