Collin Tsai, DDS, MS

Dental practices in Ontario’s older neighborhoods often serve generations of families, blending routine checkups with specialized care. A DDS with an MS degree suggests someone who’s gone beyond general dentistry, though the specifics of their practice are best confirmed directly. The area around East 4th Street has long been a mix of residential and small professional offices, making it a practical spot for appointments without the downtown rush.

Reviews paint a mixed picture: the practice holds a 3.0 rating on Google, drawn from four contributions. That kind of feedback—neither overwhelmingly positive nor sharply critical—sometimes reflects a no-frills approach or a newer presence still gathering impressions. Without deeper context, it’s the kind of place where a phone call might answer questions about everything from fillings and extractions to whether they handle more involved procedures like root canals or crowns.

The address, 1361 E 4th St in Ontario, places it among a stretch of storefronts and small businesses that have seen the city grow around them. Parking in these corridors can vary by time of day, but the tradeoff is easier access compared to larger dental chains tucked into shopping plazas. For anyone mapping out a first visit, a quick look at street-view imagery might help gauge the immediate surroundings—though the best details come from reaching out ahead.

Direct questions are often the fastest route to clarity, and the office can be contacted at (909) 219-9130. If driving from Chino or Upland, the directions via Google Maps will skirt the busier sections of Holt Boulevard. Around here, people tend to stick with what’s convenient—so proximity sometimes matters more than polish.