• American Association for the Advancement of Science.
• American Statistical Association.
• The Institute of Mathematical Statistics.
• American Society of Human Genetics.
• The Honor Society of Agriculture Gamma Sigma Delta.
• International Biometric Society.
• New York Academy of Sciences.
• Genetic Society of America.
• Botanical Society of America.

• The American Statistical Association.
• The Statistical Society of Canada.
• The Eastern North American Region of the Biometrics Society.
• International Chinese Statistical Association.

• American Statistical Association.
• International Biometric Society.
• Royal Statistical Society.
• Statistical Society of Canada.

• American Statistical Association (ASA).
• International Biometric Society-East North American Region (ENAR).

• American Statistical Association (ASA).
• International Biometric Society, Eastern North American Region (ENAR).
• Statistical Society of Ethiopians in North America.
• Ethiopian Statistical Association (was member of executive committee).
• South Carolina Chapter of the ASA.

• American Association for Cancer Research.
• American Statistical Association.
• International Biometric Society.
• International  Society for Computational Biology.
• Royal Statistical Society.

• American Statistical Association, Biometrics Society (ASA).
• Eastern North American Region/International Biometric Society (ENAR).

• American Statistical Association.
• The International Biometric Society Eastern North American Region.
• International Society for Bayesian Analysis, and the Society for Clinical Trials.

• American Statistical Association.
• International Biometric Society.
• International Genetic Epidemiology Society.
• Member of Delta-Omega Honorary Society in Public Health.

• American Statistical Association (ASA).
• ASA Sections: Bayesian Statistical Science, Biometrics.

• American Statistical Association.
• International Chinese Statistical Association.

• American Statistical Association.
• Eastern North American Region/International Biometric Society.

• Water Environment Federation.
• International Water Association.
• Turkish Chamber of Environmental Engineers.

• Co-chair, Faculty evaluation metrics development committee, Department of Epidemiology and Biostatistics, CWRU.
• Member, Department website development committee, Department of Epidemiology and Biostatistics, CWRU.
• Member, Admission and Student Progress committee, Department of Epidemiology and Biostatistics, CWRU.

• Member, Steering Committee for a Drug Development Phase IIB Clinical Trial in Tennessee.
• Member, Scientific Committee, International Chinese Statistical Association Conference.

• Associate Member of the Cancer Research Center of Hawaii.

• Member of the International Biometric Society.
• Previous member of the American Statistical Association.

• International Society for Computational Biology.
• International Society for Biopharmaceutical Statistics.
• Drug Safety Executive Council.
• International Association of Engineers.
• ASA Biopharmaceutical Section.
• American Statistical Association.
• Institute of Mathematical Statistics.

• American Statistical Association.
• The International Biometric Society.
• Genetics Society of America.
• Society of Systematic Biologists.
• International Indian Statistical Association.

• Member, American Statistical Association (ASA).
• Member, International Biometrics Society (ENAR).
• Member, NIA/NIH Special Emphasis Panels (ZAG1 ZIJ-4 (J1)) to review Alzheimer Disease Research Center (ADRC) grant proposals.
• Member, NIMH/NIH Special Emphasis Panels (ZMH1 ERB-D (C1)) to review Recovery  after an Initial Schizophrenic Episode (RAISE) grant proposals.
• Member, Institutional Review Board (02NPC Committee), Washington University School of Medicine.
• Member, WU ADRC Executive Committee.
• Member, Biostatistics Grants Review Committee.
• Member, Biostatistics Faculty Development Fund Committee.
• Summer internship: Bristol-Myers Squibb Pharmaceutical Research Institute.
• Member, The mathematical Association of America.

• Member of the Swedish Society of Medicine.
• Corporate member of the Swedish Medical Statistical Society.

• Member of American Statistical Association.
• Member of Institute of Mathematical Statistics (IMS).
• Member of International Biometric Society (ENAR).