Board Certification

  • Internal Medicine


Internship and Residency

Maimonides Medical Center
Brooklyn, NY

Medical School

University of Santo Tomas
Manila, Philippines

Undergraduate School

De LaSalle University
Manila, Philippines

Professional Associations

Tri-County Medical Society


Lester Ong, MD, became an Internist at Stephenville Medical and Surgical Clinic, PA in 1996. He earned his Doctorate of Medicine at the University of Santo Tomas in Manila, Philippines in 1988 and his Bachelor of Science in Biology at De LaSalle University in 1984. Dr Ong completed his residency at Maimonides Medical Center in Brooklyn, New York after he completed post graduate training for Internal Medicine at Chinese General Hospital in Manila, Philippines.

Dr Ong is Board certified by the American Board of Internal Medicine and a member of Tri-County Medical Society.