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About
Katherine Kostroun, MD, grew up in a military family near Fort Hood, and her Aspire Fertility profile says she chose to stay in San Antonio — the city that profile calls Military City USA — to take care of the people of San Antonio and South Texas. That is the personal framing. The academic record behind it is Texas A&M University, where she graduated summa cum laude carrying two degrees at once, biomedical sciences and psychology, then a medical degree at Baylor College of Medicine in Houston, then residency in obstetrics and gynecology and fellowship in reproductive endocrinology and infertility, both at UT Health San Antonio. Our notes put those two training milestones in 2014 and 2018; the practice announced her arrival on the San Antonio staff in August 2025.
The clinic describes her as board certified in obstetrics and gynecology and as fellowship trained in reproductive endocrinology and infertility. Those are two different statements, and the distinction is worth keeping: our sources carry no separate claim of subspecialty board certification for her, and no examination or certification dates for either credential.
Her profile lists four clinical interests rather than a procedure catalog — polycystic ovary syndrome, diminished ovarian reserve, recurrent pregnancy loss, and natural-cycle embryo transfers — plus publications in peer-reviewed journals and presentations at national meetings, several of them on PCOS. No publication count appears in the material we hold. Training-period recognition for academic performance, leadership and minimally invasive surgical technique is also on the profile, again without specifics, and the same text says patients rate her explanations and her manner highly. That last item is the clinic’s characterization, not a survey result.
Clinical Expertise
- PCOS: the one interest her research activity also names, which pairs ovulation and stimulation planning with published work on the condition.
- Diminished ovarian reserve: evaluation and protocol choices for patients whose response is expected to be limited, a group where the plan matters more than the medication dose.
- Recurrent pregnancy loss: workup and management across losses, the fourth interest on her profile.
- Natural-cycle embryo transfer: a transfer planned around a cycle with minimal or no stimulation — the interest to raise if you want the lowest medication route, and to ask about because not every clinic offers it in every patient.
- IVF: the broader practice these four interests sit inside.
- Minimally invasive gynecologic surgery: technique the profile credits her with during training; the specific procedures she performs now are not itemized in our sources.
Why Choose Dr. Katherine Kostroun
She publishes on the diagnosis you may have. PCOS shows up twice in her record: as a stated clinical interest and as a subject of her national meeting presentations. That is a different claim from listing every common diagnosis.
A low-medication transfer option, named by the physician. Natural-cycle embryo transfer appears on her own interest list. If avoiding a full stimulation is your priority, this is a concrete thing to ask about rather than an abstract preference.
Three Texas institutions, one training line. A&M, Baylor and UT Health San Antonio cover her undergraduate, medical and postgraduate years, with summa cum laude honors at the first stage and profile-level credit for minimally invasive surgical technique during training.
A recent arrival, which cuts both ways. August 2025 is her start date at Aspire, so her review history at these San Antonio addresses is shorter than that of clinicians who have practiced here for years. The training record is the documented part; ask the office what you would be waiting on for an appointment.
Professional Affiliations
Our record for this clinician shows board certification in obstetrics and gynecology and fellowship training in reproductive endocrinology and infertility at UT Health San Antonio; the certifying body is not named in the material we hold, and no society memberships are listed. She joined Aspire Fertility San Antonio in August 2025. On address: the location record this page is built from lists the Alamo Heights and Stone Oak sites in San Antonio, while the location block on her Aspire profile page currently renders an Austin site that no other part of the listing supports — confirm the office when you book. Cycle outcomes in our sources are reported for the San Antonio reporting entity as a whole, not per clinician.
Suitable For
- Patients with PCOS who want a physician with published interest in the condition, whether the route is medication, IUI or a full cycle
- Patients told their ovarian reserve is diminished, where protocol design decides most of the outcome
- Patients with recurrent pregnancy loss entering or partway through an evaluation
- Patients hoping for a natural-cycle or minimal-stimulation transfer
- Alamo Heights and Stone Oak patients, the two San Antonio addresses this record associates with her