Pediatric Blood & Marrow Transplant (BMT)

Blood and Marrow Transplant Team


Irmel Ayala, M.D. Hematology / Oncology

Dr. Ayala is the director of the Hemophilia and Bleeding Disorders Treatment Center at Johns Hopkins All Children's Hospital. She also is the hematology leader of the Young Women Bleeding Disorders/Menorrhagia Clinic, which focuses on a multidisciplinary approach to bleeding symptoms in girls and young women. Dr. Ayala also is involved in the newly created Immune Dysregulation Clinic, which evaluates patients with autoimmune cytopenias in a multidisciplinary approach.
View Irmel’s Bio

Deepakbabu Chellapandian, M.D. Hematology / Oncology

Dr. Chellapandian specializes in bone marrow transplant as a hematologist/oncologist in the Johns Hopkins All Children’s Cancer & Blood Disorders Institute. He joined the hospital staff in 2017. Dr. Chellapandian earned his medical degree from Madurai Medical College and then trained at Postgraduate Institute of Medical Education and Research, both in India. He completed a residency in pediatrics at Albert Einstein Medical Center in Philadelphia, Pennsylvania. Dr. Chellapandian completed a pediatric hematology-oncology and bone marrow transplantation fellowship at Hospital for Sick Children/University of Toronto in Canada and an advanced fellowship on bone marrow transplantation and cellular therapy at St. Jude Children’s Research Hospital in Memphis, Tennessee.
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Nanette Grana, M.D. Hematology / Oncology

Dr. Grana specializes in pediatric hematology/oncology in the Johns Hopkins All Children’s Cancer & Blood Disorders Institute. She joined the hospital medical staff in 1992. Dr. Grana earned her medical degree from the University of Puerto Rico School of Medicine. She trained in pediatrics at University Children’s Hospital in San Juan, Puerto Rico, and completed a pediatric hematology/oncology fellowship at the University of Florida.
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Team Members


Deborah Del Favero, RN, MSN/ED, CPN, NEA-BC, NE-BC

Inpatient Transplant Unit Director


Gretchen Vaughn, ARNP


Lauren Adams, PA


Lauren Pacetti, PA


Matilde Vizcaino, RN

Transplant Coordinator


Julianne Miotke, RN, BA, BSN

Transplant Coordinator