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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. Karen Sun:

View the full profile to get information on:

  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (9)

The overall average patient rating of Dr. Karen Sun is Good. Dr. Sun has been reviewed by 21 patients who have provided 9 comments. The rating is 3.5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.2
Promptness 4.4
Courteous Staff 4.3
Accurate Diagnosis 3.7
Bedside Manner 3.7
Spends Time with Me 4.3
Follows Up After Visit 4.0

Specialties & Research

  • She has special expertise in 1 area:
  • Integrative Holistic Medicine

Education & Awards

Dr. Sun graduated from National Taiwan University, Taipei.


  • Mandarin

> > > > Dr. Karen Sun, MD

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Additional Information
Dr. Karen Ying-Ying Sun MD is a female Internist, has 33 years of experience and practices in Internal Medicine.
Where does Dr. Karen Y. Sun practice?
Dr. Karen Sun has 1 office location.
Dr. Karen Sun practices Internal Medicine near Irvine, CA.
See Irvine Internists.