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Dr. Zheng works in Walnut Creek, CA and specializes in Gastroenterologist and Internal Medicine.


Explains conditions and treatments
Takes time to answer my questions
Provides follow-up as needed

Based on patient feedback.


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Preferred Provider badge recognizes providers that are committed to transparency, responsiveness and great service to patients, and have earned a high patient satisfaction rating.


Dr. Zheng's Rating
Patient Perspective
5.0 Explains conditions and treatments
5.0 Takes time to answer my questions
5.0 Provides follow-up as needed
Office Rating
Showing ratings for:
2121 Ygnacio Valley Rd Ste E105, Walnut Creek, CA, 94598
n/a Average office wait time
n/a Office cleanliness
n/a Courteous staff
n/a Scheduling flexibility
2121 Ygnacio Valley Rd Ste E105
Walnut Creek, CA, 94598
Showing 1-20 of 50 reviews
"Most tactless Doctor ever encountered! Respect is two-way "
  • February 13, 2024
"Dr. Zheng is very sensitive & considerate of her patients feelings & their needs. I appreciate the way she follows up quickly. "
  • September 28, 2023
"I had a colonoscopy performed by Dr. Zheng earlier today without anesthesia and am overwhelmed with gratitude for her excellent work. She was meticulous and handled the scope with expert skill. I've had five previous colonoscopies without anesthesia from my previous gastroenterologist, Dr. Henry Kung, who retired. Dr. Kung also did excellent work. However, this colonoscopy performed by Dr. Zheng is the best overall. I also deeply appreciate the help given by her assistant Ron. The Executive Surgery Center where the colonoscopy was performed was impeccably clean with very caring and professional staff."
  • September 27, 2023
"Dr Zheng listens & explains in simple terms patients can understand. She is also very caring!!!"
  • September 19, 2023
"This is my first time had phone appointment with Dr Zheng. She is on time, professional and very detail orientated. explain to me all needed information. Look forward to meet her in person on actual service day. thank you. "
  • September 14, 2023
"Dr Zheng is great, patient, thorough and professional."
  • September 14, 2023
"Dr Yheng explained everything very well and included a follow up visit in a timely manner. Her staff is easy to work with and her colonoscopy prep direcitons were easy to understand. I would return to her in the future if the need arose."
  • August 18, 2023
"My experience with Dr. Zheng and her staff was great from when I made my appointment to see the Dr. and the follow-up after. Friendly and professional staff, Dr. Zheng listened to my issue, addressed what I needed to do, and followed up with a test and the next visit."
  • August 16, 2023
"The visit was excellent It took an hour. The follow up could have been done with a email report rather than scheduling a phone call and waiting around"
  • August 3, 2023
"Dr Zheng was great. Had followup and she showed a lot of concern. I would recommend her to my family ??"
  • August 1, 2023
"Went through the process of the procedure. Took the time to answer all of my questions and concerns. While I am still not looking forward to the procedure, I am at ease on who will be performing the procedure. "
  • July 25, 2023
"I was very impressed overall with her staff but most importantly with Dr. YI Zheng first conversation. I knew right than and now after talking with her that she would be my doctor and I was right! Thank you Dr. Henry I kung , you did good. Enjoy your retirement and your grandchildren. "
  • July 19, 2023
"I was fortunate that Dr. Zheng was able to spot a difficult area in my colon that needed attention. Thank your for your professionalism."
  • July 17, 2023
"The whole process of scheduling an appointment for a colonoscopy was made very easy by the staff and Dr. Zheng. The pre op appointment by phone was appreciated, I live a distance from her office."
  • July 17, 2023
"I am so pleased that I left Kaiser and am now with John Muir. My first impression of Dr. Zheng is so positive. She listened to all of my problems that have been going on for years and had solid suggestions. I walked away feeling confident that we will get to the bottom of my issues. "
  • July 17, 2023
"Very easy to make an appointment, got everything done online so that I didn't need to sit in the office to complete forms. The office was immaculate, and the wait time was okay. Friendly staff, and Dr. Zheng listened and addressed my issues, and follow-up was almost immediate via email, and my next test appointment was set up."
  • July 14, 2023
"Although we had two telemedicine visits and saw each other for a only short time pre and post procedure, Dr Zheng projected care, empathy and warmth. She explained the diagnosis and treatment, diet and medication options thoroughly. Engaging in discussion of my concerns about side effects and the need for further uncomfortable diagnostic procedures, I was treated as a partner, not a subordinate. It is clear that if I need further help I am welcome, but she does not foster dependence if it is not necessary. All of this is in line with my thinking, so I have been very pleased. I was displeased that the biopsy results were not available to me (per CA law) until my follow up appointment 10 days later. I believe I would have heard from her sooner if there were concerning results, but I had unnecessary anxiety waiting in case I was mistaken in this assumption. "
  • July 13, 2023
"My pass doctor would say its cause of my anxiety. But Dr. Yi Zheng found a diagnosis and didnt mention anything about my mental health. Its a wonderful feeling when someone believes you. Having my diagnosis allow me to live a better life."
  • June 25, 2023
"I had a good experience . Dr. Zhang is very professional made me feel very at ease. The whole staff was wonderful from the beginning right to the time I left . I felt comfortable with everyone their very friendly staff again. Dr. Zhang just made me feel very comfortable the whole time I was there and she did an excellent job. I certainly would recommend her to to my family and friends."
  • June 9, 2023
"Dr Zheng was great. Had followup and she showed a lot of concern. I would recommend her to anyone."
  • May 9, 2023


2121 Ygnacio Valley Rd Ste E105
Walnut Creek, CA, 94598
Thu1:00 pm - 5:00 pm


  • Gastroenterologist
  • Internal Medicine


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