• Houston, TX

Gynecologic Surgeon & Endometriosis Excision Specialist

Tamisa Koythong, MD

Dr. Tamisa Koythong will be joining PRM’s Center of Excellence in July 2026. Stay tuned.

Dr. Tamisa Koythong is a board-certified minimally invasive gynecologic surgeon specializing in endometriosis, chronic pelvic pain, robotic gynecologic surgery, and complex pelvic disorders. She is fellowship-trained in Minimally Invasive Gynecologic Surgery (MIGS) and has extensive experience treating conditions such as endometriosis, pelvic floor dysfunction, fibroids, abnormal uterine bleeding, pelvic organ prolapse, urinary incontinence, and chronic pelvic pain syndrome.

Dr. Koythong completed her medical degree at the University of Texas School of Medicine at San Antonio before completing her Obstetrics and Gynecology residency and MIGS fellowship training at Baylor College of Medicine. She currently serves as an Assistant Professor in the Division of Minimally Invasive Gynecologic Surgery at Baylor College of Medicine, where she is actively involved in surgical education, robotics training, and advancing pelvic pain care.

Her clinical expertise includes advanced robotic surgery, minimally invasive excision surgery for endometriosis, hysterectomy alternatives, pelvic reconstructive procedures, and complex gynecologic surgery focused on improving patient outcomes and quality of life. Dr. Koythong has authored and presented numerous publications and national conference presentations related to endometriosis surgery, robotic gynecology, chronic pelvic pain, ureterolysis, pelvic reconstruction, and minimally invasive surgical techniques.

Known for her patient-centered approach, Dr. Koythong is passionate about helping patients who have spent years searching for answers to pelvic pain symptoms. She is committed to providing evidence-based, individualized care while helping patients feel heard, validated, and supported throughout their treatment journey.

Book Appointment

Get To Know Your Provider

Education

Fellowship, Minimally Invasive Gynecologic Surgery (MIGS)
Baylor College of Medicine

Residency, Obstetrics and Gynecology
Baylor College of Medicine

Doctor of Medicine (MD)
University of Texas School of Medicine at San Antonio

Bachelor of Science in Neurobiology, with honors
The University of Texas at Austin

Bachelor of Science in Psychology, with honors
The University of Texas at Austin

Experience

Assistant Professor, Division of Minimally Invasive Gynecologic Surgery
Baylor College of Medicine

Associate Program Director, Fellowship in Minimally Invasive Gynecologic Surgery
Baylor College of Medicine

Co-Director, OB/Gyn Residency Robotics Program
Baylor College of Medicine

OB/Gyn Residency Site Director, Gynecology
Texas Children’s Hospital Pavilion for Women

Specialties & Clinical Focus

Endometriosis excision surgery
Chronic pelvic pain
Robotic gynecologic surgery
Minimally invasive gynecologic surgery (MIGS)
Pelvic organ prolapse
Urinary incontinence
Fibroids and abnormal uterine bleeding
Complex pelvic reconstructive surgery

Professional Recognition & Certifications

Diplomate, American Board of Obstetrics and Gynecology
Focused Practice Designation in Minimally Invasive Gynecologic Surgery
AAGL Recognition of Excellence in Minimally Invasive Gynecology
Intuitive da Vinci Xi Robot Certified

Your Gynecologic Surgeon

Meet Dr. Koythong

Prior to joining PRM’s Center of Excellence, Dr. Tamisa Koythong completed her fellowship in Minimally Invasive Gynecologic Surgery and her residency in Obstetrics and Gynecology at Baylor College of Medicine. She earned her medical degree from the University of Texas School of Medicine at San Antonio and has extensive experience in robotic gynecologic surgery, endometriosis, and chronic pelvic pain care.

Request An Appointment

Sarah

I’m forever grateful to be in her care through my endometriosis journey. I was diagnosed with stage 4 endometriosis but my previous doctor changed clinics and was no longer in network. I found Dr. Koythong through some online research and her clinic was able to see me right away. We scheduled surgery within a few months and my endometriosis is now healed. She was very caring, and understanding. She is also fully capable and knowledgeable from her experience, studies and her work in research studies. I highly recommend her.

Pelvic Pain Patient

Dr. Koythong is very, very caring, kind, professional, and personable. She made me feel comfortable, did not rush me into making any decisions, and provided me with lots of information to help me make decisions about my healthcare. I have already recommended her to all of my friends. If you need an EXCELLENT OB/GYN / gynecological surgeon, see Dr. Koythong. Thank you!

Pelvic Pain Patient

As my former residents, I knew I was in excellent hands when Dr. Koythong agreed to perform hysterectomy, aided by Dr. Thigpen. Her skill set allowed me to choose a completely vaginal or minimally invasive robotic approach with only 2 incisions. My recovery was expedient, requiring only 24 hours of narcotics, and I didn’t spend one night in the hospital. I was working in just 1 week from home and back in the office in 2. The complete experience at Texas Children’s was excellent. Thank you so very much, Tamisa!

Patient Testimonials

Explore patient testimonials to learn more about outstanding care at PRM.

Access to Care for Pelvic Pain Patients

We Provide In Network & Out of Network Options for Patients

At Pelvic Rehabilitation Medicine, we are on a mission to provide access to care to every patient. We believe the cost of comprehensive care should not be a burden for patients seeking diagnosis and treatment that ensures a full and complete, pain-free life. Learn more about our insurance coverage.
Learn More

Start your path to healing today!

Experience compassionate care and expertise in pelvic rehabilitation with Pelvic Rehabilitation Medicine. Schedule your appointment today and take the first step towards better pelvic health.

Book An Appointment