David, a master tutor, has had 14 years of formal education, training, and post-doctoral fellowships which include three of the top four global universities: Stanford, Harvard, UC Berkeley (US News WR, 2021) and the top two universities in the world for Clinical Medicine: UCSF #1, Harvard #2 (Academic Ranking World Universities, 2019). David starting teaching when he was only 6 years old when he taught swimming for years as a volunteer for the American Red Cross. Since then, he has been teaching and mentoring myriad students as well as aspiring doctors, and eventually lecturing internationally at conferences and seminars. His education included: Bachelor of Science, Biological Sciences, Stanford University; Master of Public Health, University of California, Berkeley; Doctor of Medicine, University of California, San Francisco; post-doctoral training: Stanford University, Harvard University, University of Chicago, Wills Eye Institute). His duties at these wonderful institutions included teaching/tutoring/mentoring underclassmen as well as prospective students. The privilege of having 2 Nobel laureates as medical professors has greatly inspired him toward teaching and research. He has assisted students with STEM and many other subjects, with university/graduate program/major selection, and with writing application essays. David is signed up also as a Stanford admissions alumni volunteer and interviewer. His teaching philosophy is to lead by example that every student can succeed and learn virtually anything with enough patience, good habits, and never giving up. Realistically, setbacks are expected, but can always be overcome. He has been rewarded with great personal satisfaction as his students have been accepted to great universities such as Stanford and Johns Hopkins. The quality of his extensive education and over a quarter-century of real-world business, teaching/mentoring/tutoring, and life experience, should be of great value to prospective students. David enjoys swimming, bicycling, and meditation in his spare time.