About Dr. Robert E. O'brien, DDS
Dental care in suburban St. Louis doesn’t always mean a downtown office—sometimes it’s a quiet practice along Kehrs Mill Road. Dr. Robert E. O’Brien, DDS fits into the latter, offering general dentistry in a part of Ballwin where strip malls give way to tree-lined streets. Routine cleanings, fillings, and crowns are the kind of work that keeps a practice like this steady, but it’s the less glamorous details—like actually answering the phone when someone calls with a chipped tooth—that matter more in the long run. The area’s a mix of longtime residents and younger families, which means the need for everything from pediatric checkups to dentures doesn’t exactly slow down.
The office sits at 964 Kehrs Mill Rd, Ballwin, MO 63011, a stretch where the traffic thins just enough to make running errands feel less like a chore. It’s the kind of address that’s easy to miss if you’re not looking for it, tucked between a dry cleaner and a branch bank that’s been there since the ’90s. Ballwin’s one of those suburbs where people still remember when the roads were two lanes, and a dentist’s office that doesn’t relocate every few years carries a certain weight. No flashy signage, no promises of revolutionary techniques—just the usual things people need when they’re due for a checkup or waking up with a throbbing molar.
Reaching them is as simple as dialing (636) 391-1186, a number that’s probably scribbled on more than a few fridge magnets around town. For anyone mapping it out for the first time, the directions cut through a neighborhood where the speed limit drops and the sidewalks actually get used. It’s not the kind of place that’ll show up on a “best of” list, but then again, most people don’t pick a dentist for the ambiance.
This listing was last updated on April 12, 2026