Johns Hopkins All Children's Hospital

Meet Our Vascular Anomalies Team

The pediatric vascular anomalies team at Johns Hopkins All Children's includes experts from across specialties who work together to treat children and teens.

The Vascular Anomalies team at Johns Hopkins All Children’s Hospital uses a comprehensive approach that brings together specialists from multiple disciplines to address your child’s individual needs, often including:

  • Cardiology
  • Endocrinology
  • Gastroenterology
  • General Surgery
  • Genetics
  • Hematology/Oncology
  • Interventional Radiology
  • Neurosurgery
  • Ophthalmology
  • Orthopedics  
  • Otolaryngology 
  • Pathology
  • Physiatry  
  • Plastic and Reconstructive Surgery
  • Psychology
  • Pulmonology
Jennifer Mayer, MD

Jennifer Mayer, MD

Pediatric Oncology
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.
View Jennifer Mayer’s Bio
S. Alex Rottgers, MD

S. Alex Rottgers, MD

Plastic Surgery
Dr. Rottgers practices in the pediatric plastic and craniofacial surgery programs and is chief of the division of plastic and reconstructive surgery at Johns Hopkins All Children’s Hospital. His areas of special interest are vascular anomalies and in the treatment of cleft and craniofacial conditions including cleft lip and palate, craniosynostosis, hemifacial microsomia, microtia, and other abnormalities of the face and jaw.
View S. Alex Rottgers’s Bio
Paul Danielson, MD

Paul Danielson, MD

Pediatric Surgery
Dr. Danielson became chair of the Johns Hopkins All Children's Department of Surgery in 2020 after serving in that role on an interim basis beginning in December 2018. He specializes in general surgery and was an early adopter of minimally invasive surgical techniques, developing expertise in treating chest wall deformities. He founded the first fellowship sponsored by Johns Hopkins All Children’s Hospital in pediatric surgery and was also instrumental in bringing the National Quality Improvement in Surgery Program to the institution. Dr. Danielson was named Johns Hopkins All Children’s Hospital physician of the year in the 2015 Johns Hopkins Medicine Clinical Excellence Awards and in 2017 was named director of innovative training and education. He is a retired U.S. Army officer.
View Paul Danielson’s Bio