Blood Cancer Care Team

Meet Our Team

Jennifer Dean, M.D.

Dr. Dean is a hematologist-oncologist in the Johns Hopkins All Children’s Cancer & Blood Disorders Institute. She joined the hospital staff in 2021. She was previously an attending physician with Pediatric Specialists of Virginia in the Center for Cancer and Blood Disorders and with Children’s National Hospital.

View Jennifer Dean’s Bio

Jennifer Dean, M.D.

Jennifer Mayer, M.D.

Dr. Mayer specializes in pediatric hematology/oncology in the Johns Hopkins All Children’s Cancer & Blood Disorders Institute and is the lead hematologist of the Vascular Anomalies Program at the hospital. She served 21 years as medical director of Johns Hopkins All Children’s collaboration with Sarasota Memorial Hospital. She is author of more than 30 publications and two textbook chapters. She joined Johns Hopkins All Children's in 1996 and received the hospital's Best Consulting Physician Award in the 2017 Johns Hopkins Medicine Clinical Excellence Awards.

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Jennifer Mayer M.D.

Theresa Torres, APRN

Theresa Torres is an advanced practice registered nurse in the Johns Hopkins All Children’s Cancer & Blood Disorders Institute. She specializes in outpatient pediatric hematology/oncology. She joined the hospital staff in 2019. Before joining our hospital, Torres worked as a nurse practitioner in hematology/oncology at Children's Mercy Hospital in Kansas City, Missouri where she assisted in the development of a Spanish speaking hematology/oncology clinic and research program. Torres earned her Bachelor of Science in Nursing from Saint Luke's College of Health Sciences in Kansas City, Missouri, followed by a Master of Science in Nursing from the University of Missouri.
Theresa Torres, APRN

Lauren Gray, APRN

Lauren Gray is an advanced practice registered nurse in the Johns Hopkins All Children’s Cancer & Blood Disorders Institute. She specializes in pediatric hematology/oncology. She joined the hospital staff in 2016. Before joining our hospital, Gray worked as a blood and bone marrow transplant nurse at Moffitt Cancer Center in Tampa, Florida. Gray earned her Associate of Science in Nursing and Bachelor of Science in Nursing from St. Petersburg College, followed by a Master of Science in Nursing from the University of South Florida.
Lauren Gray, APRN