Aijaz Ahmed

Hepatologist, Transplant hepatologist

Associate Professor of Medicine (Gastroenterology and Hepatology) at the Stanford University Medical Center

Liver Transplant Program

  • 300 Pasteur Drive
  • Stanford, CA 94305
  • Phone: 650-498-7878
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Digestive Health Center

  • 900 Blake Wilbur Drive
  • Palo Alto, CA 94304
  • Phone: 650-736-5555
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Liver Clinic (Hepatology)

  • 300 Pasteur Drive
  • Stanford, CA 94305
  • Phone: 650-723-6961
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Liver Transplant Program in South Lake Tahoe

  • 2170 South Avenue
  • South Lake Tahoe, CA 96158
  • Phone: 530-543-5985
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Liver Transplant Program in San Luis Obispo

  • 437 Marsh Street
  • San Luis Obispo, CA 94301
  • Phone: 805-434-3458
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Liver Transplant Program in Fresno

  • 1377 E Herndon Avenue
  • Fresno, CA 93720
  • Phone: 650-725-1988
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Liver Transplant Program in Santa Maria

  • 525 E Plaza Drive
  • Santa Maria, CA 93454
  • Phone: 805-434-3458
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Liver Transplant Program in Templeton, 1310 Las Tablas

  • 1310 Las Tablas Road
  • Templeton, CA 93465
  • Phone: 805-434-3458
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Digestive Health Center - Endoscopy Suite at Stanford

  • 300 Pasteur Drive
  • Stanford, CA 94305
  • Phone: 650-736-5555
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Liver Transplant Program in Templeton, 1255 Las Tablas

  • 1255 Las Tablas Road
  • Templeton, CA 93465
  • Phone: 805-434-3458
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Liver Transplant Program in Henderson, NV

  • 2865 Siena Heights Drive
  • Henderson, NV 89052
  • Phone: 650-725-1988
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Digestive Health Center in Redwood City (Endoscopy Suite)

  • 450 Broadway Street
  • Redwood City, CA 94063
  • Phone: 650-736-5555
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Professional Education

Internship: Dow Medical College (1991) Pakistan

Fellowship: Stanford University School of Medicine (1999) CA

Board Certification: Transplant Hepatology, American Board of Internal Medicine (2010)

Board Certification: Gastroenterology, American Board of Internal Medicine (2000)

Residency: Brown University Program (1996) RI

Internship: University of Minnesota School of Medicine (1993) MN

Internship: New York Medical College (1992) NY

Medical Education: Dow Medical College (1990) Pakistan

Clinical Trials

Clinical trials are research studies that evaluate a new medical approach, device, drug, or other treatment. As a Stanford Health Care patient, you have access to the latest, advanced clinical trials.

Open trials refer to studies currently accepting participants. Closed trials are not currently enrolling, but may open in the future.

Primary Surgical Resection Versus Liver Transplantation for Transplant-Eligible Hepatocellular Carcinoma Patients
Wong, R. J., Wantuck, J., Valenzuela, A., Ahmed, A., Bonham, C., & Nguyen, M. H. (2014). Primary Surgical Resection Versus Liver Transplantation for Transplant-Eligible Hepatocellular Carcinoma Patients. DIGESTIVE DISEASES AND SCIENCES, 59(1), 183-191.

Clinical Presentation and Survival of Asian and Non-Asian Patients with HCV-Related Hepatocellular Carcinoma
Yip, B., Wantuck, J. M., Kim, L. H., Wong, R. J., Ahmed, A., & Nguyen, M. H. (2014). Clinical Presentation and Survival of Asian and Non-Asian Patients with HCV-Related Hepatocellular Carcinoma. DIGESTIVE DISEASES AND SCIENCES, 59(1), 192-200.

Both HCV and HBV are Major Causes of Liver Cancer in Southeast Asians
Lin, H., Ha, N. B., Ahmed, A., Ayoub, W., Daugherty, T. J., & Nguyen, M. H. (2013). Both HCV and HBV are Major Causes of Liver Cancer in Southeast Asians. JOURNAL OF IMMIGRANT AND MINORITY HEALTH, 15(6), 1023-1029.

Low incidence of hepatitis B e antigen seroconversion in patients treated with oral nucleos(t)ides in routine practice.
Lin, B., Ha, N. B., Liu, A., Trinh, H. N., Nguyen, H. A., & Nguyen, M. H. (2013). Low incidence of hepatitis B e antigen seroconversion in patients treated with oral nucleos(t)ides in routine practice. Journal of gastroenterology and hepatology, 28(5), 855-860.

Low hepatitis B envelope antigen seroconversion rate in chronic hepatitis B patients on long-term entecavir 0.5 mg daily in routine clinical practice
Liu, A., Ha, N. B., Lin, B., Yip, B., Trinh, H. N., & Nguyen, M. H. (2013). Low hepatitis B envelope antigen seroconversion rate in chronic hepatitis B patients on long-term entecavir 0.5 mg daily in routine clinical practice. EUROPEAN JOURNAL OF GASTROENTEROLOGY & HEPATOLOGY, 25(3), 338-343.

Donor Diabetes Mellitus Is an Independent Risk Factor for Graft Loss in HCV Positive but Not HCV Negative Liver Transplant Recipients
Wu, Y., Ahmed, A., & Kamal, A. (2013). Donor Diabetes Mellitus Is an Independent Risk Factor for Graft Loss in HCV Positive but Not HCV Negative Liver Transplant Recipients. DIGESTIVE DISEASES AND SCIENCES, 58(2), 574-578.

Incidence of Hepatocellular Carcinoma Among US Patients With Cirrhosis of Viral or Nonviral Etiologies
Mair, R. D., Valenzuela, A., Ha, N. B., Ayoub, W. S., Daugherty, T., & Nguyen, M. H. (2012). Incidence of Hepatocellular Carcinoma Among US Patients With Cirrhosis of Viral or Nonviral Etiologies. CLINICAL GASTROENTEROLOGY AND HEPATOLOGY, 10(12), 1412-1417.

Tenofovir Monotherapy and Tenofovir Plus Entecavir Combination as Rescue Therapy for Entecavir Partial Responders
Yip, B., Chaung, K., Wong, C. R., Trinh, H. N., Nguyen, H. A., & Nguyen, M. H. (2012). Tenofovir Monotherapy and Tenofovir Plus Entecavir Combination as Rescue Therapy for Entecavir Partial Responders. DIGESTIVE DISEASES AND SCIENCES, 57(11), 3011-3016.

High Frequency of Recurrent Viremia After Hepatitis B e Antigen Seroconversion and Consolidation Therapy
Chaung, K. T., Ha, N. B., Trinh, H. N., Garcia, R. T., Nguyen, H. A., & Nguyen, M. H. (2012). High Frequency of Recurrent Viremia After Hepatitis B e Antigen Seroconversion and Consolidation Therapy. JOURNAL OF CLINICAL GASTROENTEROLOGY, 46(10), 865-870.

Risk factors for hepatocellular carcinoma in patients with chronic liver disease: a case-control study
Ha, N. B., Ha, N. B., Ahmed, A., Ayoub, W., Daugherty, T. J., & Nguyen, M. H. (2012). Risk factors for hepatocellular carcinoma in patients with chronic liver disease: a case-control study. CANCER CAUSES & CONTROL, 23(3), 455-462.

Prospective study of risk factors for hepatitis C virus acquisition by Caucasian, Hispanic, and Asian American patients
Ho, E. Y., Ha, N. B., Ahmed, A., Ayoub, W., Daugherty, T., & Nguyen, M. H. (2012). Prospective study of risk factors for hepatitis C virus acquisition by Caucasian, Hispanic, and Asian American patients. JOURNAL OF VIRAL HEPATITIS, 19(2), E105-E111.

Comparison of the Frequency of Coronary Artery Disease in Alcohol-Related Versus Non-Alcohol-Related Endstage Liver Disease
Patel, S., Kiefer, T. L., Ahmed, A., Ali, Z. A., Tremmel, J. A., & Fearon, W. F. (2011). Comparison of the Frequency of Coronary Artery Disease in Alcohol-Related Versus Non-Alcohol-Related Endstage Liver Disease. AMERICAN JOURNAL OF CARDIOLOGY, 108(11), 1552-1555.

High Rate of Complete Viral Suppression With Combination Therapy in Patients With Chronic Hepatitis B and Prior Treatment Failure
Wong, C. R., Trinh, H. N., Yip, B., Nguyen, H. A., Garcia, R. T., & Nguyen, M. H. (2011). High Rate of Complete Viral Suppression With Combination Therapy in Patients With Chronic Hepatitis B and Prior Treatment Failure. JOURNAL OF CLINICAL GASTROENTEROLOGY, 45(10), 900-905.

Ethnic Differences in Viral Dominance Patterns in Patients with Hepatitis B Virus and Hepatitis C Virus Dual Infection
Nguyen, L. H., Ko, S., Wong, S. S., Tran, P. S., Trinh, H. N., & Nguyen, M. H. (2011). Ethnic Differences in Viral Dominance Patterns in Patients with Hepatitis B Virus and Hepatitis C Virus Dual Infection. HEPATOLOGY, 53(6), 1839-1845.

Diabetes Mellitus Increases the Risk of Mortality Following Liver Transplantation Independent of MELD Score
Samuelson, A. L., Lee, M., Kamal, A., Keeffe, E. B., & Ahmed, A. (2010). Diabetes Mellitus Increases the Risk of Mortality Following Liver Transplantation Independent of MELD Score. DIGESTIVE DISEASES AND SCIENCES, 55(7), 2089-2094.

Pseudomyxoma Peritonei Masquerading As Ascites Secondary to Alcoholic Cirrhosis
Nguyen, T., & Ahmed, A. (2009). Pseudomyxoma Peritonei Masquerading As Ascites Secondary to Alcoholic Cirrhosis. DIGESTIVE DISEASES AND SCIENCES, 54(10), 2053-2055.

Transarterial Chemoinfusion for Hepatocellular Carcinoma as Downstaging Therapy and a Bridge toward Liver Transplantation
De Luna, W., Sze, D. Y., Ahmed, A., Ha, B. Y., Ayoub, W., & Nguyen, M. H. (2009). Transarterial Chemoinfusion for Hepatocellular Carcinoma as Downstaging Therapy and a Bridge toward Liver Transplantation. AMERICAN JOURNAL OF TRANSPLANTATION, 9(5), 1158-1168.

Ultra-Deep Pyrosequencing of Hepatitis B Virus Quasispecies from Nucleoside and Nucleotide Reverse-Transcriptase Inhibitor (NRTI)-Treated Patients and NRTI-Naive Patients
Margeridon-Thermet, S., Shulman, N. S., Ahmed, A., Shahriar, R., Liu, T., & Shafer, R. W. (2009). Ultra-Deep Pyrosequencing of Hepatitis B Virus Quasispecies from Nucleoside and Nucleotide Reverse-Transcriptase Inhibitor (NRTI)-Treated Patients and NRTI-Naive Patients. JOURNAL OF INFECTIOUS DISEASES, 199(9), 1275-1285.

The Asymptomatic Outpatient with Abnormal Liver Function Tests
Krier, M., & Ahmed, A. (2009). The Asymptomatic Outpatient with Abnormal Liver Function Tests. CLINICS IN LIVER DISEASE, 13(2), 167-?.

Adenovirus-Induced Acute Liver Failure
Rothenberg, M., Cheung, R., & Ahmed, A. (2009). Adenovirus-Induced Acute Liver Failure. DIGESTIVE DISEASES AND SCIENCES, 54(2), 218-221.

Management of Biliary Strictures Following Liver Transplantation
Alexopoulos, S. P., Henningsen, J. A., Jeffrey, R. B., Bonham, C. A., Ahmed, A., & Gonzalez, S. A. (2009). Management of Biliary Strictures Following Liver Transplantation. DIGESTIVE DISEASES AND SCIENCES, 54(1), 25-27.

Prevalence of Colorectal Neoplasms in Asian Americans
Lam, K. D., Garcia, R. T., Nguyen, L. H., Trinh, H., Triadafilopoulos, G., & Nguyen, M. H. (2009). Prevalence of Colorectal Neoplasms in Asian Americans. DIGESTIVE DISEASES AND SCIENCES, 54(1), 160-167.

Bidirectionally Adjustable TIPS Reduction by Parallel Stent and Stent-Graft Deployment
Sze, D. Y., Hwang, G. L., Kao, J. S., Frisoli, J. K., Kee, S. Tw., & Ahmed, A. (2008). Bidirectionally Adjustable TIPS Reduction by Parallel Stent and Stent-Graft Deployment. JOURNAL OF VASCULAR AND INTERVENTIONAL RADIOLOGY, 19(11), 1653-1658.

Long-term survival of patients with unresectable hepatocellular carcinoma treated with transcatheter arterial chemoinfusion
Ha, B. Y., Ahmed, A., Sze, D. Y., Razavi, M. K., Simpson, N., & Nguyen, M. H. (2007). Long-term survival of patients with unresectable hepatocellular carcinoma treated with transcatheter arterial chemoinfusion. ALIMENTARY PHARMACOLOGY & THERAPEUTICS, 26(6), 839-846.

Current indications and contraindications for liver transplantation.
Ahmed, A., & Keeffe, E. B. (2007). Current indications and contraindications for liver transplantation. Clinics in liver disease, 11(2), 227-247.

Dermatologic disorders associated with chronic hepatitis C: Effect of interferon therapy
Berk, D. R., Bayliss Mallory, S., Keeffe, E. B., & Ahmed, A. (2007). Dermatologic disorders associated with chronic hepatitis C: Effect of interferon therapy. CLINICAL GASTROENTEROLOGY AND HEPATOLOGY, 5(2), 142-151.

Global transcriptional response to interferon is a determinant of HCV treatment outcome and is modified by race
He, X.-S., Ji, X., Hale, M. B., Cheung, R., Ahmed, A., & Greenberg, H. B. (2006). Global transcriptional response to interferon is a determinant of HCV treatment outcome and is modified by race. HEPATOLOGY, 44(2), 352-359.

Progressive asymptomatic occlusion of a TIPS in a patient with Budd-Chiari syndrome
Sze, D. Y., Frisoli, J. K., Macksood, D. J., Dovichi, E. A., Ahmed, A., & Keeffe, E. B. (2006). Progressive asymptomatic occlusion of a TIPS in a patient with Budd-Chiari syndrome. JOURNAL OF VASCULAR AND INTERVENTIONAL RADIOLOGY, 17(4), 737-739.

Portal, spienic, and superior mesenteric vein thrombosis in a patient with latent essential thrombocythemia and hyperhomocysteinemia
Berk, D. R., & Ahmed, A. (2006). Portal, spienic, and superior mesenteric vein thrombosis in a patient with latent essential thrombocythemia and hyperhomocysteinemia. JOURNAL OF CLINICAL GASTROENTEROLOGY, 40(3), 227-228.

Endoscopic approach to the treatment of gastrointestinal bleeding.
Lim, J. K., & Ahmed, A. (2004). Endoscopic approach to the treatment of gastrointestinal bleeding. Techniques in vascular and interventional radiology, 7(3), 123-129.

Older age and liver transplantation: A review
Keswani, R. N., Ahmed, A., & Keeffe, E. B. (2004). Older age and liver transplantation: A review. LIVER TRANSPLANTATION, 10(8), 957-967.

Chronic hepatitis C with normal aminotransferase levels
Ahmed, A., & Keeffe, E. B. (2004). Chronic hepatitis C with normal aminotransferase levels. GASTROENTEROLOGY, 126(5), 1409-1415.

Prophylaxis against chemotherapy-induced reactivation of hepatitis B virus infection with lamivudine
Simpson, N. D., Simpson, P. W., Ahmed, A. M., Nguyen, M. H., Garcia, G., & Ahmed, A. (2003). Prophylaxis against chemotherapy-induced reactivation of hepatitis B virus infection with lamivudine. JOURNAL OF CLINICAL GASTROENTEROLOGY, 37(1), 68-71.

The epidemiology of hepatitis C virus infection
Yen, T., Keeffe, E. B., & Ahmed, A. (2003). The epidemiology of hepatitis C virus infection. JOURNAL OF CLINICAL GASTROENTEROLOGY, 36(1), 47-53.

Update on chronic hepatitis C.
Ahmed, A., & Keeffe, E. B. (2003). Update on chronic hepatitis C. Comprehensive therapy, 29(4), 224-232.

Hepatitis C virus and liver transplantation.
Ahmed, A., & Keeffe, E. B. (2001). Hepatitis C virus and liver transplantation. Clinics in liver disease, 5(4), 1073-1090.

Liver transplantation: Evolving patient selection criteria
Yu, A. S., Ahmed, A., & Keeffe, E. B. (2001). Liver transplantation: Evolving patient selection criteria. CANADIAN JOURNAL OF GASTROENTEROLOGY, 15(11), 729-738.

Delayed fatal hemorrhage from pseudoaneurysm of the hepatic artery after percutaneous liver biopsy
Ahmed, A., Samuels, S. L., Keeffe, E. B., & Cheung, R. C. (2001). Delayed fatal hemorrhage from pseudoaneurysm of the hepatic artery after percutaneous liver biopsy. AMERICAN JOURNAL OF GASTROENTEROLOGY, 96(1), 233-237.

A novel endoscopic appearance of idiopathic eosinophilic esophagitis
Ahmed, A., Matsui, S., & Soetikno, R. (2000). A novel endoscopic appearance of idiopathic eosinophilic esophagitis. ENDOSCOPY, 32(6), S33-S33.

The differential diagnosis of eosinophilic esophagitis
Ahmad, M., Soetikno, R. M., & Ahmed, A. (2000). The differential diagnosis of eosinophilic esophagitis. JOURNAL OF CLINICAL GASTROENTEROLOGY, 30(3), 242-244.

Management of gallstones and their complications
Ahmed, A., Cheung, R. C., & Keeffe, E. B. (2000). Management of gallstones and their complications. AMERICAN FAMILY PHYSICIAN, 61(6), 1673-1680.

Differential diagnosis of gallstone-induced complications
Ahmad, M., Cheung, R. C., Keeffe, E. B., & Ahmed, A. (2000). Differential diagnosis of gallstone-induced complications. SOUTHERN MEDICAL JOURNAL, 93(3), 261-264.

Cost-effective evaluation of acute viral hepatitis
Ahmed, A., & Keeffe, E. B. (2000). Cost-effective evaluation of acute viral hepatitis. WESTERN JOURNAL OF MEDICINE, 172(1), 29-32.

Novel endoscopic approach for removal of a rectal foreign body
Ahmed, A., & Cummings, S. A. (1999). Novel endoscopic approach for removal of a rectal foreign body. GASTROINTESTINAL ENDOSCOPY, 50(6), 872-874.

Overview of interferon therapy for chronic hepatitis C.
Ahmed, A., & Keeffe, E. B. (1999). Overview of interferon therapy for chronic hepatitis C. Clinics in liver disease, 3(4), 757-773.

A novel technique for endoscopic removal of expandable biliary Wallstent
Ahmed, A., Keeffe, E. B., & Imperial, J. C. (1999). A novel technique for endoscopic removal of expandable biliary Wallstent. GASTROINTESTINAL ENDOSCOPY, 50(2), 279-281.

Should we throw fat on the fire? Comment
Ahmed, A., & Triadafilopoulos, G. (1999). Should we throw fat on the fire? Comment. INFLAMMATORY BOWEL DISEASES, 5(3), 236-237.

Treatment strategies for chronic hepatitis C: Update since the 1997 National Institutes of Health Consensus Development Conference
Ahmed, A., & Keeffe, E. B. (1999). Treatment strategies for chronic hepatitis C: Update since the 1997 National Institutes of Health Consensus Development Conference. JOURNAL OF GASTROENTEROLOGY AND HEPATOLOGY, 14, S12-S18.

Tuberculous peritonitis: Fatality associated with delayed diagnosis
Ahmad, M., & Ahmed, A. (1999). Tuberculous peritonitis: Fatality associated with delayed diagnosis. SOUTHERN MEDICAL JOURNAL, 92(4), 406-408.

An uncommon aetiology of perforated gastric ulcer
Ahmad, M., Vaidyan, P., & Ahmed, A. (1999). An uncommon aetiology of perforated gastric ulcer. POSTGRADUATE MEDICAL JOURNAL, 75(880), 113-114.

Lamivudine therapy for chemotherapy-induced reactivation of hepatitis B virus infection
Ahmed, A., & Keeffe, E. B. (1999). Lamivudine therapy for chemotherapy-induced reactivation of hepatitis B virus infection. AMERICAN JOURNAL OF GASTROENTEROLOGY, 94(1), 249-251.

Asymptomatic elevation of aminotransferase levels and fatty liver secondary to heterozygous hypobetalipoproteinemia
Ahmed, A., & Keeffe, E. B. (1998). Asymptomatic elevation of aminotransferase levels and fatty liver secondary to heterozygous hypobetalipoproteinemia. AMERICAN JOURNAL OF GASTROENTEROLOGY, 93(12), 2598-2599.

Bloody diarrhea caused by Plesiomonas shigelloides proctitis in a human immunodeficiency virus-infected patient
Ahmad, M., Aggarwal, M., & Ahmed, A. (1998). Bloody diarrhea caused by Plesiomonas shigelloides proctitis in a human immunodeficiency virus-infected patient. CLINICAL INFECTIOUS DISEASES, 27(3), 657-657.

A fatal case of Rhodotorula meningitis in AIDS.
Ahmed, A., Aggarwal, M., Chiu, R., Ramratnam, B., Rinaldi, M., & Flanigan, T. P. (1998). A fatal case of Rhodotorula meningitis in AIDS. Medicine and health, Rhode Island, 81(1), 22-23.

Splenic rupture: An unusual complication of colonoscopy
Ahmed, A., Eller, P. M., & Schiffman, F. J. (1997). Splenic rupture: An unusual complication of colonoscopy. AMERICAN JOURNAL OF GASTROENTEROLOGY, 92(7), 1201-1204.