Invited speaker, British Society of Toxicological Pathologists Autumn meeting, Royal Society of Medicine, London, 8th November, 1991.
Invited discussant, "Neurological Consequences of Immune Dysregulation - Lessons from HIV and MS" National MS Society workshop, Sanibel Island, Florida, U.S.A., 18-21 January 1992.
Invited speaker, "Macrophage and microglial responses in CNS inflamation". Neuromodulation in Pharmacology conference, Institut Pasteur, Paris, 5-7 Fepuary 1992.
Invited speaker, UCSF CNS Injury and Edema Research Centre and Neonatal Brain Disorders Centre, 2 November 1994.
UCSF Department of Neurology Grand Rounds "Neuroimmunomodulation with IVIG" October 16, 1996.
Invited Speaker, National Multiple Sclerosis Society Northern California Chapter Annual General Meeting, Sacramento, August 23, 1996, Seattle Chapter Annual General Meeting, Seattle, October 19, 1996 and Southern California Chapter Meeting, Los Angeles, November 17, 1996.
49th American Academy of Neurology meeting, "Primary progressive MS: clinical characteristics and progression of disability" (poster). Boston, April 12-19, 1997.
Platform presentation 51st American Academy of Neurology Meeting, "Differentiating electrophysiological characteristics of Hereditary neuropathy with liability to pressure palsy" Toronto, April 18-25, 1999.
Clinical case presenter, Neuromuscular evening seminar, 51st Annual American Academy of neurology meeting, Toronto, April 23, 1999.
Invited speaker, "Update in Multiple Sclerosis Therapies". National Multiple Sclerosis Society, Universal Hilton Hotel, Los Angeles, June 2, 2001.
Invited speaker, "The Neurological Examination" Encino-Tarzana Medical Center Grand Rounds, April 2004.
Invited speaker, "Neuromuscular Junction Disease". Resident Lecture, UCLA Medical Center November 17, 2004.
Invited speaker, "Peripheral Neuropathy", Medical Student Lecture, UCLA Medical Center 2006-2012.
Invited speaker, "Stroke update", Providence Tarzana Medical Center Community Lecture 2011-2015.
Invited speaker, "The problem of Dementia" Forum hosted at Calvary Community Church, Westlake August 16, 2014.
Stroke Program Co-Director, Tarzana Hospital 2011-2015.
Contracted speaker for Eli Lilly, Inc 2017.
Co-Investigator examining physician IDEAS Study 2016-2017.
Co-Investigator examining physician XanADu Trial 2017-2018.