Effective as of August 4th, 2025:

Services provided at Reproductive Institute of South Texas offers the following services:

•  Telemedicine consultations (with Dr. Matthew Retzloff, MD, REI)
•  IVF services (laboratory at San Antonio, TX with Dr. Matthew Retzloff, MD, REI)

Services provided by Dr. Esteban O. Brown, MD with referring physician orders:

•    Surrogacy monitoring
•  Clomid monitoring
•  Natural cycle monitoring
•  Letrozole monitoring
•  Baseline ultrasounds
•  Midcycle ultrasounds
•  Hormonal testing for infertility treatments (STAT)
•  IUI (Intrauterine Inseminations)
•  Donor inseminations

Services provided by Nyla M. (Fertility Coach)

•  Infertility education sessions

Dr. Esteban O. Brown, MD is not providing infertility consultations or treatment but continues to offer the outside

monitoring services and semen analysis testing. Parents previously under his care may request copies of their

medical records or arrange chart pick-up. Referral options are available if needed.

•  Semen Analysis (No referral required)

For appointments, medical records request, or addi onal informa on, please contact our office at 956-687-2693