Hemophilia & Bleeding Disorders

Meet Our 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

Marisol Betensky, M.D. Hematology / Oncology

Dr. Betensky specializes in hemostasis and thrombosis in the Johns Hopkins All Children’s Cancer & Blood Disorders Institute. She also treats bone marrow failure syndromes and congenital and acquired neutropenias, which are immune system conditions that may result in infections. She joined the hospital in 2016. Previously, she was an instructor in the Division of Hematology, Comprehensive Bone Marrow Failure Center at Children’s Hospital of Philadelphia.
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Jasmine Reese, M.D. Adolescent Medicine

Dr. Reese is the director of the Adolescent and Young Adult Specialty Clinic within the Division of General Pediatrics and Adolescent Medicine. She is also the adolescent medicine rotation director for the pediatric residency program. She joined the Johns Hopkins All Children's medical staff in 2016 and serves as a full-time assistant professor of pediatrics in the Johns Hopkins University School of Medicine. Dr. Reese’s clinical interests include reproductive health and mental health, and her research focuses are medical education and curriculum development in adolescent mental health and depression. She is an active member of the Society for Adolescent Health and Medicine, where she also serves as the secretary for the southeast United States region.
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Drew Warnick, M.D. Orthopaedics

Dr. Warnick is a pediatric orthopaedic surgeon at Johns Hopkins All Children’s Hospital. He sees patients in the St. Petersburg and Tampa locations of Children's Orthopaedic and Scoliosis Surgery Associates (COSSA), L.L.P., the Johns Hopkins All Children’s Outpatient Care locations in East Lake and Pasco, and at IMG Academy where Johns Hopkins All Children’s provides sports medicine and general health services.
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Mary Ann Cardenas, R.N.

Mary Ann Cardenas, R.N.



Lourdes Arvelo, LCSW

Lourdes Arvelo, LCSW



Lindsey L. Watson, PT, DPT, CSCS

Lindsey L. Watson, PT, DPT, CSCS



Kimberley Carson, PT, DPT, CSCS

Kimberley Carson, PT, DPT, CSCS




Kevin Li, Clinical Research Coordinator

Kevin Li, Clinical Research Coordinator