Dr. Geng is a licensed Internal Medicine in CA. Graduated in 2015. Medical degree obtained from Tufts University School Of Medicine. Completed residency training at Kaiser Permanente. Currently practices at Kaiser Permanente (Kaiser Permanente), located at 1425 S Main St, Walnut Creek, CA 94596. Dr. Geng specializes in hospital medicine(inpatient services).. In addition to English, Dr. Geng speaks Mandarin and accepts new patients.