Mary W. Garner, PA

Dr. Danielson is associate dean of clinical affairs at Johns Hopkins All Children’s Hospital. Dr. Danielson also began serving as president of All Children’s Specialty Physicians (ACSP) in 2023, first on an interim basis and then permanently. A clinical professor of surgery, he has chaired the Johns Hopkins All Children's Department of Surgery since 2020 and was interim chair from 2018 to 2020. He specializes in general surgery and was an early adopter of minimally invasive surgical techniques, developing expertise in treating chest wall deformities. Dr. Danielson 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. He was named Johns Hopkins All Children’s Hospital physician of the year in the 2015 Johns Hopkins Medicine Clinical Awards. He joined the hospital staff in 2008. He retired as a colonel from the U.S. Army Reserve in 2017 after serving in both Iraq and Afghanistan. Dr. Danielson earned his medical degree from the University of Rochester where he also completed the residency program in general surgery through Strong Memorial Hospital. He completed a research fellowship in pediatric surgery at Massachusetts General Hospital/Harvard University and a clinical fellowship in pediatric surgery at Children’s Hospital Los Angeles. Before joining Johns Hopkins All Children’s, he served as director of pediatric surgical oncology at the University of Massachusetts. Dr. Danielson is highly rated in 4 conditions, according to our data. His clinical expertise encompasses Appendicitis, Pectus Excavatum, Gastroschisis, Appendectomy, and Endoscopy. Dr. Danielson is board certified in American Board Of Surgery. Dr. Danielson is currently accepting new patients.

Dr. Kays is the medical director of the Center for Congenital Diaphragmatic Hernia (CDH) at Johns Hopkins All Children’s and leads the first unit in the country exclusively dedicated to these patients. He also serves as director of the extracorporeal membrane oxygenation (ECMO) program and co-director of the Fetal Diagnosis/Treatment program. He joined the medical staff in 2016. Dr. Kays has more than two decades of clinical and research leadership in the treatment of CDH, a life-threatening birth defect that affects about one in every 3,000 pregnancies. His research has focused on defining the best treatment strategies for this challenging neonatal diagnosis and contributed to significant advances in care and outcomes. Dr. Kays was previously with UF Health and Shands Children’s Hospital for more than 20 years. He was also surgeon in chief, professor of surgery and chief of the division of pediatric surgery in the University of Florida College of Medicine, Department of Surgery, where he led the ECMO and congenital diaphragmatic hernia program for over 20 years. He is the author or coauthor of more than 60 peer-reviewed original science publications and speaks nationally and internationally on CDH care and outcomes. Dr. Kays earned his medical degree from the Feinberg School of Medicine at Northwestern University. He completed a surgical residency at Strong Memorial Hospital, University of Rochester Medical Center, and then completed a pediatric surgery fellowship at Morgan-Stanley Children’s Hospital of Columbia University, New York. Dr. Kays is a fellow of the American College of Surgeons and the American Academy of Pediatrics and a member of the Children’s Oncology Group. Videos Meet David Kays, M.D. Dr. Kays is highly rated in 5 conditions, according to our data. His clinical expertise encompasses Diaphragmatic Hernia, Congenital Diaphragmatic Hernia, Hernia, Donnai-Barrow Syndrome, and Appendectomy. Dr. Kays is board certified in American Board Of Surgery and General Surgery. Dr. Kays is currently accepting new patients.

Dr. McClenathan is chief of the division of the pediatric gastroenterology, hepatology and nutrition at Johns Hopkins All Children’s Hospital. He earned his medical degree at Louisiana State University School of Medicine and completed his pediatric internship and residency at The Johns Hopkins Hospital and his pediatric gastroenterology and nutrition clinical and research fellowships at Harvard Medical School and Massachusetts General Hospital. Dr. Mcclenathan is highly rated in 18 conditions, according to our data. His clinical expertise encompasses Lactose Intolerance, Rotor Syndrome, Eosinophilic Esophagitis, Encopresis, and Gastrostomy. Dr. Mcclenathan is board certified in AB Pediatrics (Pediatric Gastroenterology), AB Pediatrics - Pediatrics, and American Board Of Pediatrics. Dr. Mcclenathan is currently accepting new patients.

Dr. Sally Mitchell is a Professor in the Johns Hopkins Medicine Department of Radiology and Radiological Science and an Associate Professor in the Department of Pediatrics. Her areas of clinical expertise include pediatric interventional, vascular anomalies, hereditary hemorrhagic telangiectasia (HHT) management of pulmonary arteriovenous malformations, varicocele embolization and evaluation of pediatric renovascular hypertension. Dr. Mitchell serves as the Medical Director of Johns Hopkins HHT Center, the Director of Vascular Anomalies Interventional, the Director of Pediatric Interventional and Associate Director of Interventional Radiology Center at the Johns Hopkins School of Medicine. Dr. Mitchell graduated summa cum laude from Ohio University and completed her medical training with an M.D. from Ohio State University. After her residency in diagnostic radiology at the University of Cincinnati, she completed a fellowship there in computed tomography (CT), ultrasound and interventional radiology. She continued subspecialty training at Johns Hopkins in interventional radiology and subsequently joined the faculty. Dr. Mitchell's research interests include vascular malformations and HHT. Dr. Mitchell is a Fellow of the Society of Cardiovascular and Interventional Radiology and Fellow of the Cardiovascular and Interventional Society of Europe. She is a member of the International Society for the Study of Vascular Anomalies, the American College of Radiology and the Radiological Society of North America. Dr. Mitchell is highly rated in 1 condition, according to our data. Her clinical expertise encompasses Arteriovenous Malformation and Neurogenic Bowel. Dr. Mitchell is board certified in American Board Of Radiology. Dr. Mitchell is currently accepting new patients.

Dr. Jorge McCormack is board certified in pediatric cardiology and pediatric cardiac electrophysiology, and is with BayCare Medical Group in Tampa Bay, Florida, where he sees patients from birth throughout adulthood. Before joining BayCare Medical Group, he practiced at Pediatric Cardiology Associates. Dr. McCormack earned a Doctor of Medicine from the University of Puerto Rico in San Juan, Puerto Rico, performed a pediatrics internship and residency at Baylor College of Medicine in Houston, Texas, and completed a research fellowship and clinical fellowship in pediatric cardiology from the University of Miami School of Medicine in Miami, Florida. Dr. McCormack has a clinical interest in electrophysiology and manages arrhythmias, pacemakers and sudden death syndromes. Dr. McCormack is a Fellow of the American Academy of Pediatrics, the American College of Cardiology and the Heart Rhythm Society and is a member of the North American Society of Pacing and Electrophysiology and the Pediatric and Congenital Electrophysiology Society. He’s affiliated with St. Joseph’s Hospital, St. Joseph’s Children’s Hospital and many other hospitals throughout Tampa Bay. Dr. Mccormack is highly rated in 25 conditions, according to our data. His clinical expertise encompasses Congenital Heart Block, Heart Murmurs, Long QT Syndrome, and Wolff-Parkinson-White Syndrome. Dr. Mccormack is board certified in Pediatrics, Pediatric Cardiology, AB Pediatrics - Pediatrics, American Board Of Pediatrics, and AB Pediatrics (Pediatric Cardiology). Dr. Mccormack is currently accepting new patients.

Dr. Kelvin Lau is fellowship trained in invasive pediatric electrophysiology and is with BayCare Medical Group in Tampa, Florida, where he sees patients newborn to age 21 and adults with congenital heart disease. Before joining BayCare Medical Group, he practiced at Pediatric Cardiology Associates in Tampa and at the University of Louisville in Kentucky. At Louisville, Dr. Lau developed the transvenous cardiac device implantation program and served as the medical director of the university’s Cardiac Pacemaker and Defibrillator Program. He earned a Doctor of Medicine degree from the Yale University School of Medicine in New Haven, Connecticut, and completed a pediatrics residency, a pediatric cardiology fellowship and an advanced fellowship in electrophysiology at The Children’s Hospital of Philadelphia in Philadelphia, Pennsylvania. Dr. Lau treats patients who have arrhythmias, and he performs minimally invasive, advanced 3-D mapping ablation procedures and the implantation of pacemakers and defibrillators. He has participated in numerous arrhythmia-related research projects and has been honored with a teaching award for educating medical students and pediatric residents. Dr. Lau is certified in pediatrics and pediatric cardiology. He’s a Fellow of the Heart Rhythm Society and is a member of the American College of Cardiology. Dr. Lau is affiliated with St. Joseph’s Hospital and is the director of pediatric electrophysiology at St. Joseph’s Children’s Hospital. Dr. Lau is highly rated in 26 conditions, according to our data. His clinical expertise encompasses Wolff-Parkinson-White Syndrome, Pulmonary Supravalvular Stenosis, Pulmonary Valve Stenosis, and Ventricular Septal Defects. Dr. Lau is board certified in AB Pediatrics - Pediatrics and AB Pediatrics (Pediatric Cardiology). Dr. Lau is currently accepting new patients.