Patient Reviews

Reviews reflect patients' level of satisfaction with the care they received from this provider. Dr. Gary Lai xhas an overall rating of 4.5.

Specialties & Expertise

Dr. Gary Lai has the following 7 areas of expertise and 1 specialty.

Internal Medicine

An internist is a physician who focuses on the diagnosis and treatment of conditions that affect the adult population—both acute and chronic.

These doctors are often who adults see as their primary physicians because they treat a broad range of illnesses that do not require surgical or specialist interventions. They also work to help a patient maintain optimal health in order to prevent the onset of disease.

In addition to treating the common cold and flu, internists also treat chronic diseases like diabetes and heart disease.


See areas of expertise for treating specific conditions, procedures and surgeries for this doctor.

Locations & Directions

Southern Ontario Medical Center

2525 S Euclid Ave
Ontario, CA 91762

Gary T Lai MD

14335 Pipeline Ave
Chino, CA 91710

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