Are you a healthcare professional?
Is this your profile?
background
background
Dr. Wei-Fang Ko, MD

Dr. Wei-Fang Ko, MD

Gastroenterology*
35+ years of experience

Dr. Wei-Fang Ko, MD is a gastroenterologist in Castro Valley, CA and has over 35 years of experience in the medical field. Dr. Ko has extensive experience in Pancreatic Disease. He graduated from Taipei Medical College in 1986. He is affiliated with Eden Medical Center. He is accepting new patients and telehealth appointments.

4.5 Star Rating
Based on 51 reviews 4.5 Star Rating (51 reviews)

Practice

19845 Lake Chabot Rd Ste 104 Castro Valley, CA 94546
Telehealth available

Make an Appointment

Hospital Highlight

Dr. Ko is affiliated with Eden Medical Center Castro Valley, a highly rated and top awarded hospital for gastroenterology.

Dr. Ko is a Healthgrades Choice provider in Gastroenterology

The Healthgrades Choice designation helps you understand the most important factors to consider when choosing a healthcare professional. This designation is earned based on four set standards.
Read our methodology

  • Above average experience
  • Good hospital quality
  • Good patient ratings
  • No healthcare sanctions
  • Area of Expertise
    Dr. Ko specializes in the area of Gastroenterology. See board certifications
  • Explains Conditions Well
    Patients said this doctor explains conditions well. See reviews
  • Offers Telehealth
    This doctor offers telehealth appointments. Call the office to schedule an appointment.
  • Practices at Top Hospital
    Gastrointestinal Surgery Excellence Award™ See hospitals
ADVERTISEMENT
healthgrades-rx

Save money with free prescription discounts

Optum Perks and Healthgrades are subsidiaries of RVO Health.

Experience Check

Search for experience in a specific area

Insurance Check

Search for your insurance carrier and choose your plan type

Dr. Ko's Reviews

Likelihood to recommend Dr. Ko

4.5
51 ratings, 28 with a written review
5 star
82%
82%
4 star
6%
6%
3 star
0%
0%
2 star
4%
4%
1 star
8%
8%

Your trust is our top concern.

We strive to keep reviews honest, trustworthy, and fair.

Doctors can not pay for good reviews, nor can they pay to have negative reviews removed.

We monitor all reviews to ensure they comply with our guidelines and don’t include personal information, profanity, libel, defamation, harassment, obscenity or fraud.

Any reviews that are deemed fraudulent or violate our guidelines will be removed immediately.

All reviews are confirmed and audited before publication, and community members have the ability to flag inappropriate content for further review by our team.

Wei-Fang J. Ko, M.D is the extremelyworst Doctor
For Wei-Fang J. Ko, M.D , Let me share my experience for him. He do not care anything about patient. he never do any basic diagnosis of his patient and do not have any basic knowledge of medical. He is very rude and do not have the moral and basic doctor standard. Please do not see this doctor , he is definitely waste your time.
What went well
No results
What could be improved
  • I didn't feel respected
  • Didn't listen or answer questions
  • Didn't explain conditions well
Helpful
Apr 29, 2025
×Post a ResponseAre you Dr. Ko?
The Dr and the whole staff were so nice
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Oct 19, 2024
×Post a ResponseAre you Dr. Ko?
All the staff were very kind, friendly and very helpful. Explained every step of the way.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Oct 14, 2024
×Post a ResponseAre you Dr. Ko?
All is well
Had a colonoscopy at Bay Area Endoscopy Center w Dr Ko & staff. Everyone was kind and efficient.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Sep 24, 2024
×Post a ResponseAre you Dr. Ko?
Excellent experience
Very nice environment and facilities. Friendly staffs and quick procedure. It’s a wonderful experience and Dr. Ko is highly recommended.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Sep 17, 2024
×Post a ResponseAre you Dr. Ko?
Dr Ko Very soft spoken, kind and considerate
All staff were kind and courteous . They handled all questions and made the patient feel safe and comfortable
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Dwight Roberts – Sep 13, 2024
×Post a ResponseAre you Dr. Ko?
Prep for colonoscopy
Telehealth
Prep for colonoscopy
What went well
No results
What could be improved
  • I didn't feel respected
  • Difficult to schedule appointment
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Staff wasn't friendly
  • Appointment was rushed
  • Didn't trust the provider's decisions
  • Long wait times
Helpful
Lo Nguy?n – Sep 12, 2024
×Post a ResponseAre you Dr. Ko?
Excellent specialist. Very knowledgeable and kind.
This was my third colonoscopy Dr. Ko administered and it went very well, especially with the anesthesia where I was fast asleep before it began. The facility is spotless and the staff is nice and compassionate.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Elaine Lambert – Aug 27, 2024
×Post a ResponseAre you Dr. Ko?
All staff members, nurses, and doctors were very caring.
What went well
No results
What could be improved
No results
Helpful
Aug 13, 2024
×Post a ResponseAre you Dr. Ko?
Kind and gentle
Everyone was kind and respectful. They were very calming and made the process easy.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Terry – Jul 23, 2024
×Post a ResponseAre you Dr. Ko?
I will be happy to introduce to my friends
Telehealth
Feeling comfortable
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Jul 09, 2024
×Post a ResponseAre you Dr. Ko?
Wonderful experience
My first colonoscopy and had a lot of anxiety going in. The nurse and Anesthesiologist worked with me closely and helped me at every step of the way. Amazing staff! Clean and efficient facilities and knowledgeable friendly staff.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Jun 25, 2024
×Post a ResponseAre you Dr. Ko?
I recommend Dr. Ko
The operation was smoothly succeed today. Dr. Ko is a good doctor, I under his care for ten years already.The facility is clean, comfortable and all staff, nurses are professional and friendly. I am very satisfied.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
  • Long wait times
Helpful
Jun 18, 2024
×Post a ResponseAre you Dr. Ko?
Very nice. seems knowledgeable. I like him.
I got in and out very fast. Everyone was as very friendly and gave me answers to my questions.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Sheila Smith – May 14, 2024
×Post a ResponseAre you Dr. Ko?
Ms. Hassani
Cheerful and light but proffesional atmosfere. Great Medical Staff and Dr Ko is awesome!
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Mary B – May 10, 2024
×Post a ResponseAre you Dr. Ko?
Very nice and experienced doctor
Dr Ko is a very nice and experienced doctor. Very patient as well. I had both my colonoscopy procedures with him, both no pain or discomfort at all. Thank you very much!
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Mar 07, 2024
×Post a ResponseAre you Dr. Ko?
Professional and quality care
Friendly staff, professional environment and care. I was well taken care of.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Feb 22, 2024
×Post a ResponseAre you Dr. Ko?
Easy please me
Thorough and precise.No post procedure discomfort. Recommended
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Staff friendliness
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Feb 21, 2024
×Post a ResponseAre you Dr. Ko?
Dr. Ko was personable and knowledgeable. The appointment was on time, and Dr. Ko patiently answered all my questions. The young lady at the front desk was also very helpful, both the day of my appointment, and weeks later when I called because I misplaced the procedure instructions she provided.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
S. Challenger – Jan 26, 2024
×Post a ResponseAre you Dr. Ko?
Horrible experience
Went to get a colonoscopy to see what might be causing my severe anemia. Went to Dr. Ko because he was close to where I live, and I did not ask my primary to recommend one. Big mistake on my part. Anyway, at the initial appt he didn't relay any information to me about the procedure or what was going to be done. Appointment was all of 10 min. At the colonoscopy appointment, as I'm coming out of anesthesia, and still in the procedure room, when he very bluntly tells me I have colon cancer, and it was so big he couldn't get the scope passed it so he could not continue with the whole procedure . In my sedated state I ask how bad. He just said he knows I have a lot of question, and just tells me to see a surgeon and oncologist and immediately walks out the procedure room never to be heard from again. Horrible, horrible 'bed side manner'.
What went well
  • Staff friendliness
  • Wait times
What could be improved
  • I didn't feel respected
  • Difficult to schedule appointment
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Appointment was rushed
  • Didn't trust the provider's decisions
1 other person found this helpful
Helpful
swnk – Nov 22, 2023
×Post a ResponseAre you Dr. Ko?

Leave a review

How was your experience with Dr. Ko?

About Me

care philosophy

My philosophy is to put the patient first, provide physical and emotional comfort, and strive for the highest care possible.
  • Gastroenterology

  • Internal Medicine

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • University Calif San Francisco

    Fellowship Hospital, 2000
  • University Minn Hospital & Clin

    Internship Hospital, 1995
  • University Minn Hospital And Clin

    Internship Hospital, 1995
  • University Md Johns Hopkins

    1993
  • Harvard Medical School

    1989
  • Harvard University

    1989
  • Taipei Medical College

    Medical School, 1986
  • Taipei Medical University

    Medical School, 1986
American Board of Medical Specialties®
American Board of Internal Medicine®
Gastroenterology
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.
  • English

  • Mandarin

  • Mandarin

  • Mandarin

  • Minnan

Dr. Ko is a Healthgrades Choice provider in Gastroenterology

    Read our methodology

    Locations

    Practice

    Office19845 Lake Chabot Rd Ste 104 Castro Valley, CA 94546
    1

    Practice

    Office27206 Calaroga Ave Ste 212 Hayward, CA 94545
    2
    Bhupinder S Virk MD Inc.15035 E 14th St Ste G San Leandro, CA 94578
    3

    Affiliated Hospitals

    • Eden Medical Center

      20103 Lake Chabot Rd
      Castro Valley, CA 94546
      Recipient of 13
      hospital awards

      America's 250 Best Hospitals Award™ (2025, 2023)

      Top 5% in the nation for consistently delivering clinical quality

      Gastrointestinal Surgery Excellence Award™ (2025)

      Top 5% in the nation for consistently delivering clinical quality

      View all awards

      How patients felt about the care they received at this hospital.

      86%
      Patients said they were given information about recovering at home

      2% higher than the national average

      76%
      Patients said that doctors always listened to them and explained things well
      View all patient feedback
    Learn more about how Healthgrades measures Hospital Quality