Our Doctors

Henry Sakai, MD, FAAP

Dr Henry Sakai | Pediatrician Rockville MD | Silver Spring MD | Wheaton MDDr. Henry Sakai earned both his Bachelor of Arts degree in Biology and his Doctor of Medicine degree from the University of Virginia in Charlottesville. He continued his training with a Pediatric Internship and Residency at Duke Medical Center in Durham, North Carolina.

Board certified in Pediatrics, Dr. Sakai is affiliated with Holy Cross Hospital in Germantown, where he serves on the Medical Staff Leadership Committee. He is also affiliated with Holy Cross Hospital in Silver Spring, where he has served as Chairman of the Department of Pediatrics and on the Medical Executive Committee. The recipient of many honors and awards throughout his career, Dr. Sakai was named to Washingtonian Top Docs of 2014. In his free time, Dr. Sakai enjoys activities with his children, fine dining and attending local sporting events.


Erik S. Rubinson, MD, FAAP

Dr Erik Rubinson | Pediatrician Rockville MD | Silver Spring MD | Wheaton MDDr. Erik Rubinson earned his Bachelor of Arts degree cum laude in Biological Sciences from the University of Delaware in Newark, and his Doctor of Medicine degree from Hahnemann University in Philadelphia, Pennsylvania. He continued his training with a Pediatric Residency at the University of Maryland Medical System in Baltimore, Maryland.

Dr. Rubinson currently serves as a Primary Care Pediatrician and Corporate Co-President at Pediatric Associates of Montgomery County, where he has been in practice since 1997. He maintains affiliations with Holy Cross Hospital of Silver Spring, Maryland, and Shady Grove Adventist Hospital in Rockville, Maryland. Throughout his career, Dr. Rubinson has received many honors and awards, including the Hahnemann University Award for Child Psychiatry. He has also been involved in numerous research projects relating to health and pediatric care issues, including infantile autism. Dr. Rubinson is board certified by the American Academy of Pediatrics and holds membership in the Montgomery County Medical Society, Montgomery-Prince George’s Pediatric Society and Phi Lambda Kappa Medical Fraternity.


Samuel Leibowitz, MD, FAAP

Dr Samuel Leibowitz | Pediatrician Rockville MD | Silver Spring MD | Wheaton MDDr. Samuel Leibowitz earned his Bachelor of Science degree from Emory University in Atlanta, Georgia, and his Doctor of Medicine degree from the Georgetown University School of Medicine in Washington, D.C. He continued his training with a Pediatric Internship and Residency at the University of Connecticut School of Medicine in Farmington, Connecticut.

Board certified in Pediatrics, Dr. Leibowitz has been practicing at Pediatric Associates of Montgomery County since 2003. He maintains an affiliation with both Holy Cross Hospital in Silver Spring, Maryland, and Shady Grove Adventist Hospital in Rockville, Maryland. Active in various professional organizations, Dr. Leibowitz is a Fellow of the American Academy of Pediatrics.


Debbie Engel, MD, FAAP

Dr Debbie Engel | Pediatrician Rockville MD | Silver Spring MD | Wheaton MDDr. Debbie Engel earned her Bachelor of Science degree magna cum laude from Duke University in Durham, North Carolina, her Doctor of Medicine degree from the Tulane University School of Medicine in New Orleans, Louisiana, and her Master of Public Health degree from the Tulane University School of Public Health and Tropical Medicine. She continued her training with a Pediatric Internship and Residency at the Children’s National Medical Center in Washington, D.C.

Board certified in Pediatrics, Dr. Engel has served as a Primary Care Physician at Pediatric Associates of Montgomery County since 2005. She maintains affiliation with both Holy Cross Hospital in Silver Spring, Maryland, and Shady Grove Adventist Hospital in Rockville, Maryland.  Active in professional organizations, she is a Fellow of the American Academy of Pediatrics. In her free time, Dr. Engel enjoys outdoor activities, reading and spending time with her family.

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