Cornerstone OB-GYN
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Cornerstone OBGyn is a full service practice for women`s health in Central Texas. Since the beginning, Cornerstone has been committed to quality care and customer service to their patients.  All physicians are board certified/eligible and well trained in normal and high risk obstetrical management, advanced gynecologic treatments and surgeries. The office also offers obstetric and gynecologic 3D and 4D ultrasound service.

Cornerstone OBGyn stays current on medical and surgical treatments and offers Essure, Mirena, Adiana, Novasure and many other popular solutions in Women`s Health. The providers also offer preconception counseling, infertility evaluation and first line treatment.

Cornerstone ObGyn is located at 16040 Park Valley Drive suite 222, Round Rock, Texas 78681 which is right across the street from St. David`s Medical Center of Round Rock. The medical center has been delivering quality care in Round Rock since 1985 and has an excellent reputation that has stood the test of time. The physicians also utilize Oakwood Surgery Center as well as performing some outpatient surgical procedures in the office. 


Please welcome Dr. Blanca Duncan to our practice!



Blanca Duncan, M.D., was born in Mexico and has lived in Louisiana and Texas for most of her life. She received a degree in International Business from Louisiana State University. She then attended medical school and completed her residency in Obstetrics and Gynecology at Louisiana State University Health Science Center in Shreveport, LA. She is Board Certified with the American College of Obstetrics and Gynecology.

Dr. Duncan is married to Adam. They have two dogs and a cat. She enjoys: reading, jogging, traveling and spending time with her family.


 Robotic Surgery


Contact our office at (512) 341-8001 to schedule an appointment or to learn more about our services.

Dr. Irvin sees OB patients starting at "6:45 am" on Tuesdays.
Dr. Choudhry has extended her hours for OB Patients to "6:30 pm" on Tuesdays.








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