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Merlyn Thomas, MD

Gynecology, OB/GYN

Sienna OB/GYN

Women's Health Specialists

Sienna Obstetrics and Gynecology

You deserve a physician who's committed to your individual needs. You'll receive this and more from the OB/GYN's at Kelsey-Seybold Sienna who are all about your complete health, inside and out, from preventive care to pregnancy and beyond.

Gynecologic Care

We emphasize a preventive health program that includes well-woman examinations and Pap tests, breast examinations, family planning, mammograms, bone densitometry screenings, and nutrition and exercise.

When a medical issue does arise, we provide a wide range of treatment options for all conditions, including premenstrual syndrome, abnormal Pap tests, endometriosis, menopause management, and more.

Obstetrical Care for Moms and Moms-to-Be

Our Sienna OB/GYN team provides complete obstetrical care from prepregnancy planning to the birth of your child and postpartum evaluation. We guide both low-risk and high-risk patients through pregnancy, helping them make important decisions about prenatal tests, birthing classes, and pediatricians. Additional obstetrical services we provide include abdominal and transvaginal ultrasound, fetal heart monitoring, and non-stress tests.

Call 713-442-0427 anytime, day or night, to schedule your next OB/GYN appointment at Kelsey-Seybold Clinic Sienna.

Clinic Information

Sienna Clinic
7010 Highway 6
Missouri City, Texas 77459
Phone: 713-442-6700

Clinic Hours

Monday - Friday
8 am - 5 pm

Lab Hours

Monday - Friday
7 am - 5 pm
Make a Lab Appointment

Map and Directions

Schedule an Appointment Today!

You can book appointments through our secure online patient portal, or call our 24/7 Contact Center.