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Johns Hopkins Children’s Center

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Our Team




Division director Maria Oliva-Hemker, M.D., appeared on the cover of Baltimore magazine as a Top Doctor in 2013, and the division's faculty regularly appear in the magazine's annual Top Doctors Guide.

Advanced Practice Nurses

Mary Kay Alford, M.S.N., R.N., C.P.N.P.
Pediatric Nurse Practitioner
Medical Coordinator, Pediatric Liver Center

Lynn Mattis, M.S.N., R.N.
Clinical Nurse Specialist 

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