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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 (2)

The overall average patient rating of Dr. Won Yu, Internist is Excellent. Dr. Yu has been reviewed by 15 patients who have provided 2 comments. The rating is 5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.8
Promptness 4.5
Courteous Staff 4.7
Accurate Diagnosis 4.6
Bedside Manner 4.6
Spends Time with Me 4.6
Follows Up After Visit 4.6

Specialties & Research

Dr. Won Yu, MD is board certified in Internal Medicine and Gastroenterology.

  • He has special expertise in 5 areas:
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Constipation
  • Hepatitis C
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Education & Awards

Dr. Yu graduated from Temple University Physicians, Philadelphia. He has 4 awards.

Patients' Choice Award (2008 - 2009, 2012, 2014 - 2015)
Compassionate Doctor Recognition (2012, 2014)
On-Time Doctor Award (2014 - 2015)
Medical Honor Society *


Dr. Yu has 2 hospital affiliations:

  • St. Joseph Hospital - Orange 
  • Garden Grove Hospital and Medical Center 


  • Korean
  • Spanish

> > > > Dr. Won Yu, MD

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Additional Information
Dr. Won K Yu MD is a male Internist, has 12 years of experience and practices in Internal Medicine and Gastroenterology.
Where does Dr. Won K. Yu practice?
Dr. Won Yu has 1 office location.
Dr. Won Yu practices Internal Medicine and Gastroenterology near Orange, CA.
See Orange Internists and Orange Gastroenterologists.