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SSM Health Medical Group

Greg Weissler, MD

Pediatrics
Greg Weissler image
4.9 out of 5 – 

SSM Health Cardinal Glennon Pediatrics

1345 Smizer Mill Road, Suite 1200 Fenton, MO 63026
Dr. Greg Weissler is a board-certified pediatrician who accepts new patients ages 0-18 and sees established patients through their 19th birthdays. He sees patients throughout the St. Louis metropolitan area. Dr. Weissler offers a full range of pediatric services, including prenatal meet-and-greet visits with expectant parents, newborn checkups, well-child exams, sick visits, chronic disease management, and preventive care. He evaluates, diagnoses, and treats a wide variety of illnesses, injuries, and conditions affecting children, and is committed to supporting the health and well-being of every patient with compassionate, family-centered care.

Dr. Weissler is proud to care for children and their families through evidence-based medicine in accordance with the Catholic Ethical and Religious Directive. He is also a member of the Catholic Medical Association.

In his free time, Dr. Weissler enjoys spending time playing with his kids, participating in recreational sports, reading, and playing the guitar and piano.

About Me

Reviews

Rating Breakdown

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

Question Breakdown

4.9
Overall Experience
4.9
Listened Carefully
4.9
Explained Things Clearly
4.9
Knew Medical History
4.9
Involved in Care Decisions
5.0
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.
4.9 out of 5
36 ratings,
12 reviews
6/14/2026
He’s fabulous!
6/7/2026
We absolutely love Gregory J. Weissler ! He is caring, patient, and amazing with children. He always listens carefully and makes us feel comfortable and welcomed every visit. we truly appreciate all the care and kindness he gives our family. Highly recommend him to anyone looking for a wonderful children’s doctor!
6/4/2026
Dr. Weissler speaks and listens in a way that shows you he genuinely cares for and respects you and your children.
4/7/2026
He is hands down the best pediatrician!
3/1/2026
he is the best doctor and the best listener when we talk to him about our child

Map & Directions

SSM Health Cardinal Glennon Pediatrics

1345 Smizer Mill Road, Suite 1200 Fenton, MO 63026
Mon

8:00 am - 4:30 pm

Tue

8:00 am - 4:30 pm

Wed

8:00 am - 4:30 pm

Thu

8:00 am - 4:30 pm

Fri

8:00 am - 4:30 pm

Sat

Closed

Sun

Closed

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