Mallory Lyn Lostumbo, M.D.

Headshot of Mallory Lyn Lostumbo


General Pediatrics, Pediatrics


Johns Hopkins Community Physicians — Rockville Pediatrics

1201 Seven Locks Road
Suite 201
Rockville, MD 20854
Phone: 301-881-7995 | Fax: 240-236-9865
Johns Hopkins Community Physicians — Rockville Pediatrics - Google Maps


Mallory Lostumbo, M.D., is a pediatrician at Johns Hopkins Community Physicians in Rockville. She received her medical degree from SUNY Upstate Medical University in Syracuse, NY and completed her residency at Dartmouth Hitchcock in 2017. She is a fellow of the American Academy of Pediatrics. Dr. Lostumbo’s clinical interests include preventative medicine, adolescent medicine and working with new parents. She lives locally with her husband and enjoys traveling, baking and spending time with friends and family. more



  • MD; SUNY Upstate Medical University (2014)


  • Pediatrics; Dartmouth-Hitchcock Medical Center (2017)

Board Certifications

  • American Board of Pediatrics (Pediatrics) (2017)
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