Personal relationships
You're more than a number. The team gets to know you and tailors your visit to your goals.
In Line Dentistry is a one-doctor practice in Diamond Bar built on a simple idea: treat people like people, not charts — honest guidance, unhurried visits, and every cost on the table before anything starts.
Diamond Bar, CA · English · Español · 한국어 · Tiếng Việt
Dr. Chon grew up in Southern California, earned his undergraduate degree from UCLA, and completed dental school at UNLV. After a life-changing mission trip to Guatemala, he shifted his path toward a career driven by purpose and patient care.
He is passionate about helping people feel like themselves again — restoring the ability to smile, eat, and live comfortably. With a warm, honest approach, every patient feels seen and supported.
"Dr. James is the rare dentist who genuinely puts you at ease. His calm, friendly demeanor makes the whole experience feel less like a dental visit."
UCLA · UNLV School of Dental Medicine · ADA member
You're more than a number. The team gets to know you and tailors your visit to your goals.
Every step is explained before it happens, so you feel confident the whole way through — nitrous oxide available when it helps.
Advanced training in implant placement and cosmetic enhancement — health and smile, together.
What we doWe stand behind our work with a four-year care policy, kept active with routine six-month maintenance.
How it works
The In Line team welcomes patients in English, Spanish, Korean, and Vietnamese — from your first phone call to your treatment plan. Nothing gets lost in translation, and nobody gets rushed out the door.
One doctor, one room at a time: your appointment is your appointment. Meet everyone in person at your first visit — or say hello in whichever language feels like home.
$95 covers your complete first visit — exam, X-rays, and cleaning. $0 with most PPO plans.