Highlights
Age Groups Seen
- Infant 0-2
- Child 3-12
- Adolescent 13-17
Languages
- English
In-Network Plans
View All Accepted Plans (11)Gender
FemaleJohns Hopkins Affiliations:
- Johns Hopkins Community Physicians
About Mallory Lyn Lostumbo
Johns Hopkins Physician
Background
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 and was named a 2025 Top Doctor by Bethesda Magazine and Washingtonian Magazine.
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.
Locations
- Johns Hopkins Community Physicians - Rockville
- 1201 Seven Locks Road, Suite 201, Rockville, MD 20854
- Get Directions
- phone: 301-881-7995
- fax: 240-236-9865
Expertise
Education
- Residency: Dartmouth-Hitchcock Medical Center, Pediatrics, 2017
- Medical Education: SUNY Upstate Medical University, MD, 2014
Board Certifications
- Pediatrics: American Board of Pediatrics, 2017
Insurance
- Aetna
- CareFirst
- Cigna
- First Health
- Geisinger Health Plan
- HealthSmart/Accel
- Johns Hopkins Health Plans
- MultiPlan
- Pennsylvania's Preferred Health Networks (PPHN)
- Point Comfort Underwriters
- Private Healthcare Systems (PHCS)
Ratings & Reviews
4.9 out of 5
50 ratings, 5 reviewsThe Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.
- 5 out of 5 starsReviewed on 3/7/2026
She was great and very efficient! Easy to talk to!
- 5 out of 5 starsReviewed on 12/11/2025
Dr. Lostumbo has been great for us! She takes time to listen and explain what's been of concern to us.
- 5 out of 5 starsReviewed on 12/1/2025
Dr. Lostumbo is the greatest. Listens, explains well.
- 5 out of 5 starsReviewed on 9/19/2025
The provider was very patient, she listened to my concern and gave positive feedback and guide me in the right direction to go, our visit was very long but she stay for the entire time.
- 5 out of 5 starsReviewed on 6/5/2025
This was only our first visit with Dr. Lostumbo, but we are very satisfied!