About · In Line Dentistry

Dentistry with a person behind it

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.

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Diamond Bar, CA · English · Español · 한국어 · Tiếng Việt

Dr. James Chon, DMD
Your doctor

Meet Dr. James Chon, DMD

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."
— Jonathan H. · Google review

UCLA · UNLV School of Dental Medicine · ADA member

The philosophy

What "in line" actually means

Personal relationships

You're more than a number. The team gets to know you and tailors your visit to your goals.

Comfort-focused care

Every step is explained before it happens, so you feel confident the whole way through — nitrous oxide available when it helps.

Implant & cosmetic expertise

Advanced training in implant placement and cosmetic enhancement — health and smile, together.

What we do

4-year care policy

We stand behind our work with a four-year care policy, kept active with routine six-month maintenance.

How it works
The In Line Dentistry team at work
The team

Care in your language

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.

Come say hello

Your first visit is the easy part

$95 covers your complete first visit — exam, X-rays, and cleaning. $0 with most PPO plans.

Call (909) 598-1122
Call (909) 598-1122