Andrew C. Gratzon, MD
(832) 522-8400
18400 Katy Freeway, Suite 500, Houston, Texas, 77094
Business hours
| Monday | 5:00pm to 11:59pm |
| Tuesday | 12:00am to 11:59pm |
| Wednesday | 12:00am to 11:59pm |
| Thursday | 12:00am to 11:59pm |
| Friday | 12:00am to 11:59pm |
| Saturday | 12:00am to 8:00am |