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Collin Tsai DDS, MS

Orthodontist
5.0 (1 review) Updated Apr 05, 2026
9190 Sierra Ave. #101, Fontana, CA 92335

About Collin Tsai DDS, MS

Straightening teeth takes precision. In Fontana’s Sierra Avenue corridor, orthodontic care doesn’t require a detour—just a turn into unit 101. This is where aligners, braces, and bite corrections happen without the fanfare of a downtown practice. The address, 9190 Sierra Ave., sits near the kind of strip-mall convenience that makes midday appointments feasible, even for those squeezing them between work and school runs.

Orthodontics often gets lumped in with childhood rites of passage, but the field covers far more than teenage metal mouths. Adults revisiting alignment issues, kids getting early evaluations, or anyone exploring alternatives like clear aligners will find the category’s full scope here. Phone lines are open for questions about retainers, jaw alignment, or the logistical side of treatment—just call (909) 356-4200 when you’re ready to sort out the details.

Fontana’s growth has stretched services thin in some areas, but orthodontic care remains steadfastly local. Directions are straightforward: plug the address into your map and follow the route past the usual Inland Empire mix of warehouses and taquerías. It’s the kind of place where the real work happens quietly, one adjustment at a time.

This listing was last updated on April 05, 2026

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Business Hours

Business Details

Accessibility
Wheelchair accessible entrance
Wheelchair accessible parking lot
Wheelchair accessible restroom
Amenities
Restroom
Planning
Appointments recommended
Payments
Credit cards
Debit cards
NFC mobile payments
Parking
On-site parking