Thomas Ganz, MD Obstetrics and Gynecology in O Fallon, MO

4.7 out of 5 –

SSM Health Medical Group

1101 Highway K O Fallon, MO 63366

Thomas Ganz, MD, specializes in obstetrics and gynecology. He received his medical degree from Saint Louis University School of Medicine and completed his residency at the Saint Louis University department of obstetrics, gynecology, and women's health.

Dr. Ganz is a junior fellow of the American College of Obstetrics and Gynecology, and is a member of the SSM Health St. Mary's Ethics Committee, Obstetrics Quality Improvement Committee, and the Gynecologic Quality Improvement Committee.

Dr. Ganz received the Outstanding Laparoscopist Award and the Resident Case Presentation Award.

About Me

Reviews

Rating Breakdown

Reviews are measured on a scale of 1 to 5, with 5 being the best score.

Question Breakdown
4.7
Overall Experience
4.7
Listened Carefully
4.8
Explained Things Clearly
4.5
Knew Medical History
4.7
Involved in Care Decisions
4.8
Showed Courtesy & Respect

Patient Reviews

SSM Health only displays patient satisfaction data for providers included in our survey process and who have a minimum of 30 returned surveys. The overall rating is an average of all responses to the survey questions listed below. The ratings and comments submitted by patients reflect their own views and opinions. Patient identities are withheld to ensure confidentiality and privacy. Learn more about our survey.

4.7 out of 5

96 ratings,

28 reviews

9/22/2026

AWESOME

8/29/2026

He’s really nice. He gets the point and gets to the point.

7/28/2026

Excellent bedside manner, especially in a slightly awkward situation. Just really wants to help people be happy and heathy. I’ve had appointments with him for routine care and whatnots. Staff is fun, friendly and funny. All around Top Notch. 🎀

6/30/2026

He was wonderful. Took time to explain my condition and how to treat it. Prescribed medication was thorough in describing application and importance of follow up. No issues with Dr Ganz and would highly recommend him to friends or family.

6/2/2026

My daughters have been cared for by Dr Ganz and had positive experience and that’s why I saw him