Raphael's cover photo
Raphael's photo

Raphael L.

USD $129/hr

Harvard and Yale grad for math and science tutoring

Tutor Information


I majored in math and physics at Yale, and received a PhD in statistical physics at Harvard. I have also worked in scientific areas throughout my career. As such, I have very deep expertise in math and science, and I enjoy passing that on to students. I am excellent at explaining things to people of all levels and abilities. I am highly experienced having tutored full time (>2000 hours per year) for the past few years. I primarily focus on math, physics, statistics, and chemistry, to college students, high school students, and professionals. I also tutor people in competition math / science such as AMC and AIME and USPhO, as I was top 4 in the US Chemistry Olympiad, top 20 in the US Physics Olympiad, and top 50 in the US Math Olympiad.


East Palo Alto, California, United States


English, French




High School


Harvard University

1994 - 1999
PhD, Physics
GPA 3.96

Yale University

1989 - 1993
BS, Math and Physics
Summa cum laude, GPA 3.95

Work Experience

Independent tutor

January 2019 - present
Independent tutor
Full time tutor (>2000 hrs/year) of math, physics, statistics, chemistry, and business to students in high school, college, and professionals.

GeneKey Corp

January 2010 - January 2019
Founder, President, and Chief Scientist
Started a company to understand the causes of an individual patient's cancer at the molecular level and thereby identify the best treatment approach for them (when standard approaches failed).

CollabRx, Inc

March 2008 - January 2010
Cofounder and Head of Personalized Oncology Services
Started company to provide services to biomedically oriented foundations and to work with patients with late stage cancer.

Lehrer Consulting LLC

January 2007 - March 2008
Consulted to start up companies and venture capital firms in the diagnostics and biotech industries.

Gene Logic Inc

April 2002 - January 2007
Executive Director, Business Development and Strategic Alliances
Focused on serving pharmaceutical industry via RNA -based data and technologies, including finding new indications for drugs that had failed clinical trials due to lack of efficacy.

The Boston Consulting Group

October 1999 - February 2002
Consultant primarily to the biotech / pharmaceutical industry in strategy and operations.


Great tutor

Raphael explained all concepts clearly and in great detail. He helped answer all my questions and was really friendly.
By: Katlyn

Knowledgeable, clear and amazing!

I was able to get through many exercises within the hour and Raphael was very flexible with the covered material. I was also able to ask many questions that just come up to mind during the sessions and get understandable answers.
By: Piper

easy to understand

He explained the concepts really well in a way I can understand. Defintely recommend
By: Amulya


Raphael is great at breaking down complex concepts in a very understandable way. He did more for my understanding of probability and how problems can be approached in 1 hours than me reading books or watching youtube videos for weeks!
By: Eva

Raphael is great!

Raphael is great, he helped me work through some advanced mathematical concepts with a friendly and collaborative teaching style that I really enjoy!
By: Ben