Browse Health
Gastroenterologist (digestive)
25 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).

Learn more about Dr. Francis Yao:

View the full profile to get information on:

  1. Qualifications
  2. What's important to you

View full profile

Patient Reviews

Patient comments (5)

The overall average patient rating of Dr. Francis Yao is Good. Dr. Yao has been reviewed by 5 patients who have provided 5 comments. The rating is 4 out of 5 stars.

Patient Ratings
Ease of Appointment 3.2
Promptness 2.9
Courteous Staff 3.2
Accurate Diagnosis 3.7
Bedside Manner 3.7
Spends Time with Me 3.1
Follows Up After Visit 3.4

Specialties & Research

Dr. Francis Yao, MD is board certified in Gastroenterology.

  • He has special expertise in 8 areas:
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Constipation
  • Hepatitis B
  • Hepatitis C
  • Hepatocellular Carcinoma
  • Irritable Bowel Syndrome (IBS)
  • Liver Cancer
  • Ulcerative Colitis

Education & Awards

Dr. Yao graduated from Yeshiva University, Bronx.


Dr. Yao has 7 hospital affiliations:

  • John Muir Medical Center, Walnut Creek Campus 
  • California Pacific Medical Center - Davies Campus 


  • Mandarin
  • Chinese

Similar doctors nearby

Dr. Patrika Tsai

12 years experience
San Francisco, CA

Dr. Nathan Bass

Internal Medicine
39 years experience
San Francisco, CA

Dr. Audrey Lau

4 years experience
San Francisco, CA

Dr. Yen Pham

San Francisco, CA

Dr. Wolfgang Korn

24 years experience
San Francisco, CA

Dr. Robert Osterhoff

5 years experience
San Francisco, CA
Search All Similar Doctors
Additional Information
Dr. Francis Yung-Kang Yao MD is a male Internist, has 25 years of experience and practices in Gastroenterology.
Where does Dr. Francis Y. Yao practice?
Dr. Francis Yao has 1 office location.
Dr. Francis Yao practices Gastroenterology near San Francisco, CA.
See San Francisco Gastroenterologists.