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Current Fellows


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Bharill, Sonum, M.D.

Pediatric Endocrinology Fellow

Jacquelyn Manfredo, M.D.

Manfredo, Jacquelyn, M.D.

Pediatric Endocrinology Fellow
Clinical/Research InterestsThyroid Disorders, Disorders of Puberty and Steroidogenesis, Diabetes
Medical School: Geisinger Commonwealth School of Medicine
Residency: University of Maryland
Fellowship: The Johns Hopkins Hospital

Dr. Manfredo received her bachelor’s degree in chemical engineering from the University of Virginia. After working briefly in environmental engineering, she changed career paths and began her medical education at the Geisinger Commonwealth School of Medicine. After completing her pediatric residency at the University of Maryland, she continued her training in Baltimore at Johns Hopkins in pediatric endocrinology..

Mark Porter, M.D., M.B.A.

Porter, Mark, M.D., M.B.A.

Pediatric Endocrinology Fellow
Clinical/Research Interests: Type 1 diabetes, Cystic-Fibrosis-Related Diabetes, Puberty/Growth Disorders, Thyroid Disorders, Quality Improvement 
Medical School: Ohio State University College of Medicine
Residency: University of Hawaii
Fellowship: The Johns Hopkins Hospital.

Dr. Porter received his bachelor’s degree in biochemistry from the University of Wisconsin — Madison. He then went to the Ohio State University College of Medicine and completed a combined medical and master’s of business administration program. After completing his pediatric residency at the University of Hawaii, he moved to Baltimore to continue training in pediatric endocrinology at Johns Hopkins.

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