Greater Houston Gastroenterology

Houston has 162 gastroenterology listings, and zip 77030, home to the Texas Medical Center, holds 24 of them, the biggest cluster by far. Smaller pockets sit in 77094 with 9 and 77034 and 77339 each with 8. Checking your own zip against these numbers narrows the search fast. Every listing carries a phone number, and 140 of the 162 also list a website, so calling two or three to compare scheduling and insurance is usually easy.

Paid placements are labeled Sponsored, and none appear in this category right now, so the order you're browsing is the same plain directory listing for every practice. If you run one of these Houston practices and a phone number or site link has gone stale, you can claim the listing and fix it, which spares a patient in a packed zip like 77030 from a dead-end call.