Meet Our Physicians

As a native Houstonian and born at St. Joseph Hospital, George T. Kuhn, M.D. has served our community for over 35 years. He is Chief of Staff 2020 at St Joseph Medical Center and is Authority in Subdermal Contraceptive Devices.

Dr. Kuhn was a graduate of Strake Jesuit College Preparatory School and received a BS degree from the University of Texas at Austin. He received his medical degree from the University of Texas Medical School at Houston and specialized in Obstetrics & Gynecology at the St. Joseph Hospital Residency Program in Houston, Texas.

Dr. Kuhn has held numerous leadership positions including Chairman of the Department of Obstetrics & Gynecology at St. Joseph Hospital Medical Center, and president of the Houston Gynecological & Obstetrical Society. As a Board Certified Obstetrician & Gynecologist, Dr. Kuhn is a clinical instructor at the University of Texas Medical School at Houston and Assistant Professor at Weill Cornell Affiliated Residency Training Program at Houston Methodist. He has given lectures on numerous subjects and has been a contributing author of medical textbooks. Dr. Kuhn is the founder of Women's Healthcare Associates.

Dr. Kuhn's areas of interest include high-risk obstetrics, minimally invasive gynecological surgery, including pelvic and vaginal reconstructive surgery.

A Houston area native, Dr. Rhinehart-Ventura graduated from Deer Park High School as valedictorian of her class. She graduated from Baylor University in Waco, Texas, Summa Cum Laude. She then returned to Houston and attended Baylor College of Medicine, where she received her medical degree, and graduated with Honor. While in medical school, Dr. Rhinehart-Ventura found her calling in the care of women, and went on to complete her specialty training in the Baylor College of Medicine Obstetrics and Gynecology Residency Program.

During her residency training, Dr. Rhinehart-Ventura completed a research project on the induction of labor, and gave an oral presentation at the Society for Maternal-Fetal Medicine Annual Meeting of 2014, in New Orleans, LA. Her manuscript, Evaluation of outcomes after implementation of an induction-of-labor protocol was published in the American Journal of Obstetrics and Gynecology in 2014.

Dr. Rhinehart-Ventura is a junior fellow of the American College of Obstetrics and Gynecology. She is devoted to providing compassionate, evidence-based care to the women of Houston, and her particular interests include high-risk obstetrics, vaginal birth after cesarean section, and minimally invasive gynecological surgery.

Dr Weilie Tjoa is a Board-Certified OB/GYN practicing in Houston for the past 35 years.

Dr Tjoa graduated from The Singapore American School in Singapore. She received her Bachelor of Science in Pre-Med from Bennett College, Master’s Degree in Microbiology from IIT in Chicago, PhD from University of Texas School of Public Health and her Medical Degree from University of Texas Medical School, Houston. She completed a post-doctoral fellowship in Infectious Disease with Dr Herbert L. Dupont and her OB/GYN residency training at St Joseph Hospital with Dr Joseph A. Lucci, Sr.

Dr Tjoa is a member of ACOG, ABOG, AMA, TMA, Harris County Medical Society, the American Congress of Obstetricians and Gynecologists, Houston Gynecological and Obstetrical Society and the Chinese American Doctors Association.

After delivering thousands of babies in Houston, she joined WHA in 2015 to provide routine annual gynecological care, pregnancy confirmation and consults on contraception, abnormal Pap smears, menopause management, osteoporosis, pessary fitting, post-menopausal vaginal bleeding, pelvic pain and office procedures.

Dr. Jenna Sassie grew up in the suburbs north of Houston and graduated from New Caney High School. She obtained her undergraduate chemistry degree from Sam Houston State University with honors and then moved to Houston to attend the University of Texas Medical School at Houston (now McGovern Medical School). Dr. Sassie knew she had an interest in surgery and women's healthcare early in high school while volunteering at a local hospital in Kingwood, TX. She completed her obstetrics and gynecologic training with the Houston Methodist OB/GYN residency program, where she earned multiple awards including resident teaching awards, the Joseph A. Lucci chief of the year, chief resident of the year and the AAGL minimally invasive surgeon award.

Dr. Sassie is a junior fellow in the American College of Obstetrics and Gynecology, a member of the Houston Gynecological and Obstetrical Society, and a member of the AAGL. She has an interest in education and resident teaching. During medical school and residency, she completed abstracts involving Medicaid eligibility and gynecologic oncology. She also contributed to the Case Files Obstetrics and Gynecology textbook. Dr. Sassie is board certified in OB/GYN and looks forward to expanding her practice by caring for women in the Houston area.

Dr. Curtis has 24 years of experience in the field of women's health; in private practice, as a hospitalist and as a consultant physician for numerous organizations. She graduated medical school from Texas Tech University in Lubbock, TX and completed her Obstetrics and Gynecology Residency at Cleveland Clinic.
As an associate professor at UT Houston Health Center, she has been awarded several honors related to the improvement of women's health, office based safety programs and healthy communities. She has been published in many journals that are available upon request.

Dr. Chandrasekera grew up in Zambia but later moved to San Antonio, Texas where she graduated from Ronald Reagan High School. She spent most of her summers here volunteering at the local hospital doting on newborns, hoping to one day enter the healthcare field. She then traveled north to Baylor University in Waco, Texas, where she completed her Bachelor of Science in Biology with a minor in Chemistry. She went on to complete her medical school at the University of North Texas Health Science Center- Texas College of Osteopathic Medicine, before making her way down to Houston, Texas where she finished her Obstetrics and Gynecology residency at the Houston Methodist Hospital.

During her training Dr. Chandrasekera received multiple awards including those for resident teacher of medical students, Chief Resident of the year and the Dr. Perry Klein Outstanding Resident in Obstetrics and Gynecology. She also has been trained and certified in both the Fundamentals of Laparoscopic Skills and the da Vinci Robotic System.

Some of Dr. Chandrasekera's main clinical interests are high-risk obstetrics and minimally invasive gynecologic surgery. She is looking forward to serving the women of her community and building her practice here in Houston, Texas.

Dr. Diana Herrera is a native Houstonian. She graduated from the University of Houston where she received a Bachelor of Science in Human Biology with a minor in Psychology. She then graduated from Baylor College of Medicine and during her studies there, she found her passion in women’s healthcare needs. She completed her residency in Obstetrics and Gynecology at Houston Methodist Hospital where she earned recognition for Excellence in Minimally Invasive Gynecology and obtained certification in da Vinci® robotic surgery. Dr. Herrera joined Women’s Healthcare Associates in 2020 and is looking forward to caring for her patients at both Houston locations.

Dr. Herrera is fluent in English and Native Spanish. Her clinical interest include minimally invasive gynecologic surgery, da Vinci robotic surgery, routine gynecologic care, preconception counseling, contraception, adolescent gynecology, infertility, general and high-risk obstetrics, menopause, and office procedures.

During her time off, she enjoys spending time with her husband, two daughters and three dogs. She enjoys running, cycling and reading mystery novels. She also played the violin in a mariachi band for many years!