Browse Health
Internist, Gastroenterologist (digestive)
21 years of experience
Accepting new patients
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 (1)

The overall average patient rating of Dr. Diana Yao is Excellent. Dr. Yao has been reviewed by 5 patients who have provided 1 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.3
Promptness 5.0
Courteous Staff 5.0
Accurate Diagnosis 5.0
Bedside Manner 5.0
Spends Time with Me 5.0
Follows Up After Visit 5.0

Specialties & Research

Dr. Diana Yao, MD is board certified in Internal Medicine and Gastroenterology.

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

Education & Awards

Dr. Yao graduated from George Washington University.


Dr. Yao has 10 hospital affiliations:

  • Miller Children's Hospital 
  • Anaheim Memorial Medical Center 


  • Spanish
  • Hindi

> > > > Dr. Diana Yao, MD

Similar doctors nearby

Dr. Laurie Mortara

Internal Medicine
24 years experience
Long Beach, CA

Dr. George Huthsteiner

Internal Medicine
33 years experience
Long Beach, CA

Dr. Robert Comer

Internal Medicine
23 years experience
Long Beach, CA

Dr. Matthew Mukherjee

Internal Medicine
9 years experience
Long Beach, CA

Dr. Stephen Severance

Internal Medicine
44 years experience
Long Beach, CA

Dr. Kalpana Patel

Internal Medicine
19 years experience
Long Beach, CA
Search All Similar Doctors
Additional Information
Dr. Diana Kelly Yao MD is a female Internist, has 21 years of experience and practices in Internal Medicine and Gastroenterology.
Where does Dr. Diana K. Yao practice?
Dr. Diana Yao has 1 office location.
Dr. Diana Yao practices Internal Medicine and Gastroenterology near Long Beach, CA.
See Long Beach Internists and Long Beach Gastroenterologists.