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License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

Patient comments (6)

The overall average patient rating of Dr. Gary Lai is Excellent. Dr. Lai has been reviewed by 13 patients who have provided 6 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 5.0
Promptness 3.7
Courteous Staff 4.7
Accurate Diagnosis 4.7
Bedside Manner 4.5
Spends Time with Me 4.2
Follows Up After Visit 4.0

Education & Awards

Dr. Lai graduated from Brown University, Providence. He has 1 awards.

Compassionate Doctor Recognition (2014)


Dr. Lai has 19 hospital affiliations:

  • Los Angeles County + University of Southern California Medical Center 
  • Garfield Medical Center 


  • Spanish
  • Taiwanese
  • Mandarin
  • Thai
  • Chinese

> > > > Dr. Gary Lai, MD

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Additional Information
Dr. Gary T Lai MD is a male Internist, has 15 years of experience and practices in Internal Medicine.
Where does Dr. Gary T. Lai practice?
Dr. Gary Lai has 3 office locations.
Dr. Gary Lai practices Internal Medicine near Ontario, CA.
Additional practice locations include: Chino, CA and Alhambra, CA.
See Ontario Internists.