Dr. Richard Yip, MD

Dr. Richard Yip has been practicing Gastroenterology in Orange County for over 20 years. He finished his medical school training at University of Illinois, Chicago, his residency in internal medicine at Northwestern University in Chicago, and his Gastroenterology fellowship at the University of Chicago. He is often described as humble, kind and a physician that treats his patients with extraordinary respect and care. His reputation is well known among physicians and many medical staff and physicians have come to seek his medical expertise. He specializes in colon cancer screening, endoscopy, general consultation and has a special interest in hepatology. Treatment is available for issues including abdominal pain, constipation, diarrhea, hepatitis B, hepatitis C and liver issues.


  • Gabidge M., Yip D., Hedges K. Levels of lysosomal enzymes in tissues of mice infected with Mycoplasms fermentans. Infections and Immunity. 1975; 12:233-239
  • Tompkins W., Seth P., Yip D., Palmer J., Gee S., Rawls W. Specific lysis of human colon tumor cells by antibodies to CEA and isoantigen A; Dependence on rabbit serum or neuranimidase. J. Immunology. 1976; 117:1943-1948
  • Woan M., Yip D., Tompkins W. Autochithonous, allogeneic, and xenogeneic cells as targets for vaccinia immune Lymphocyte cytotoxicity. J. Immunology.  1978; 120:312-316
  • Yip D., Baker A. Liver disease in pregnancy. Clinic in Perinatology. 1985; 12:683-694