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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).

Learn more about Dr. Alex Leung:

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Specialties & Research

Dr. Alex Leung, MD is board certified in Internal Medicine.

  • He has special expertise in 10 areas:
  • AIDS/HIV (Acquired Immunodeficiency Syndrome)
  • Anxiety Disorders
  • Arthritis
  • Asthma
  • Bronchitis
  • Cholesterol Management
  • Diabetes
  • Endocrine Disorders
  • Hospitalist
  • Kidney Disease

Education & Awards

Dr. Leung graduated from Medical College of Wisconsin, Milwaukee.


Dr. Leung has 1 hospital affiliations:

  • St. Jude Medical Center 


  • Mandarin
  • Cantonese

> > > > Dr. Alex Leung, MD

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Additional Information
Dr. Alex Shing Yu Leung MD is a male Internist, has 9 years of experience and practices in Internal Medicine.
Where does Dr. Alex S. Leung practice?
Dr. Alex Leung has 1 office location.
Dr. Alex Leung practices Internal Medicine near Fullerton, CA.
See Fullerton Internists.