Aspire Blog

Meet Dr. Katherine Kostroun: 

Posted on August 1st, 2025

Your Fertility Specialist in San Antonio

Aspire Fertility San Antonio is thrilled to welcome Dr. Katherine Kostroun, a board-certified OB/GYN and fellowship-trained reproductive endocrinologist, to our team of expert fertility specialists. With her compassionate approach and deep clinical expertise, Dr. Kostroun is here to guide individuals and couples through every step of their fertility journey.

Expert Fertility Care in San Antonio

Dr. Kostroun brings years of specialized training in reproductive endocrinology and infertility (REI), including advanced skills in IVF, PCOS management, and recurrent pregnancy loss. She completed her residency and fellowship at UT Health San Antonio and earned her medical degree from Baylor College of Medicine. Patients benefit not only from her medical excellence, but from her dedication to personalized, emotionally supportive care.
If you're searching for a fertility doctor in San Antonio, Dr. Kostroun is an exceptional partner to have on your side.

Passionate About PCOS and Patient Education

One of Dr. Kostroun’s key clinical passions is Polycystic Ovary Syndrome (PCOS). Many patients come to her after receiving a diagnosis without clarity or direction. She’s committed to changing that.
“Women with PCOS can and do get pregnant. You might just need a little help—and that’s where I come in.”
Dr. Kostroun takes time to explain each step, empowering patients to make informed decisions about their fertility treatment.

A Personalized Approach to Infertility Treatment

Dr. Kostroun believes in building strong relationships with her patients. She prioritizes open communication, frequent check-ins, and ensuring patients feel fully supported—both emotionally and physically.

“I encourage new patients to bring their questions. By the end of our consultation, I want you to feel confident and clear about the path forward.”

Whether you're considering IUI, IVF, egg freezing, or fertility testing, Dr. Kostroun will tailor a plan that aligns with your unique goals and medical history.

Why Aspire Fertility?

What drew Dr. Kostroun to Aspire Fertility was its commitment to excellence in both care and technology.

“I was blown away by the IVF lab. Most people don’t realize how critical the lab is for IVF success—and Aspire’s is truly state-of-the-art.”

At Aspire Fertility, our labs, physicians, and staff all work together to give patients the best possible outcomes—while treating them with warmth, dignity, and respect.

Supporting San Antonio and South Texas Families

Born and raised in a military family near Fort Hood, Dr. Kostroun is proud to care for the people of San Antonio and South Texas, including many in the military community. During training, she rotated at BAMC and continues to serve with gratitude and compassion.

Ready to Begin Your Fertility Journey?

Whether you’re just starting to explore fertility options or are ready to begin treatment, Dr. Kostroun is here to help you take the next step with confidence.


📍Seeing new patients at Aspire Fertility San Antonio starting on September 22nd
Services include: IVF, IUI, egg freezing, PCOS treatment, and more
📞 Schedule your consultation today to meet Dr. Kostroun and get expert, compassionate fertility care in San Antonio.

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