His average patient rating is 5.0 stars out of 5. In his practice, he is particularly interested in salivary gland cancer and oral cancer. Dr. El-Sayed's professional affiliations include the University of California San Francisco (UCSF) Medical Center and San Francisco VA Medical Center (SFVAMC). He is in-network for Anthem, Blue Cross/Blue Shield, Blue Shield, and more. Before performing his residency at Boston Medical Center, Dr. El-Sayed attended Boston University School of Medicine.