The 20 Best Noonan Syndrome Doctors Near Me in Maryland, US
Find the Top Noonan Syndrome Experts and Specialists
Howard County Medical Pavilion
Dr. Couser obtained his bachelor’s degree from the University of Virginia and his Medical Doctorate from the Virginia Commonwealth University School of Medicine (VCU SOM). Dr. Couser’s ophthalmology residency was completed at Howard University where he served as co-chief resident in the last year of his residency. He received fellowship training in pediatric ophthalmology and adult strabismus at Emory University. Dr. Couser received a master’s degree in biotechnology from the Johns Hopkins University and completed a residency in clinical genetics at the University of North Carolina at Chapel Hill. He is one of only a few individuals currently board-certified by both the American Board of Ophthalmology and the American Board of Medical Genetics and Genomics. CV https://www.hopkinsmedicine.org/-/media/wilmer/documents/cvs/couser-cv Research Summary My primary research focus involves the identification and management of genetic eye diseases including rare inherited disorders affecting the eyes. Research and scholarly activities have been an integral component of my career path. I have been the principal investigator on 10 clinical trial/IRB studies and a co-investigator on others, participated with several committees or advisory panels related to research activities. I have been credited with over 120 book chapter, journal article and abstract publications. In addition, I served as the primary author/sole editor for a textbook titled Ophthalmic Genetic Diseases: A Quick Reference Guide to the Eye and External Ocular Adnexa Abnormalities, 1st Edition, published by Elsevier in 2018, which is one of only a few textbooks published in this subject area. I also served as a grant review panelist for the National Eye Institute Career Development Awards. Selected Publications *Couser NL, Masood MM, Strande NT, Foreman AKM, Crooks K, Weck KE, Lu M, Wilhelmsen KC, Roche M, Evans JP, Berg JS, Powell CM. 2015. The phenotype of multiple congenital anomalies- hypotonia-seizures syndrome 1: Report and review. Am J Med Genet Part A 9999A:1–6 *Couser NL, Lambert SR. Botulinum toxin: A treatment of consecutive esotropia in children. Strabismus 2012; 20(4):158-161 Couser NL, Lenhart PD, Hutchinson AK. Augmented Hummelsheim procedure to treat complete abducens nerve palsy. J AAPOS 2012;16(4):331-5 *Natario L. Couser, Maheer M. Masood, Arthur S. Aylsworth, and Roger E. Stevenson. Ocular manifestations in the X-linked intellectual disability syndromes. Ophthalmic Genet. 2017, Jan 23:1-12 *Couser NL, Brooks BP, Drack AV, Shankar SP. The evolving role of genetics in ophthalmology. Ophthalmic Genet. 2021 Jan 12:1-4. doi: 10.1080/13816810.2020.1868011. Dr. Couser is rated as an Experienced provider by MediFind in the treatment of Noonan Syndrome. He is also highly rated in 13 other conditions, according to our data. His clinical expertise encompasses Epicanthal Folds, Strabismus, Hypotonia, and Brown Syndrome. Dr. Couser is board certified in American Board Of Medical Genetics And Genomics and American Board Of Ophthalmology.
Johns Hopkins Outpatient Center
Dr. Sara Mixter is Assistant Professor of Medicine and Pediatrics at the Johns Hopkins University School of Medicine. Her areas of clinical expertise are internal medicine, pediatrics, and primary care for adults with developmental disabilities and other complex childhood-onset conditions. She is the director of the Hopkins PACT (Pediatric-informed Adult Care and Transition) Clinic. Dr. Mixter is also the medical director of the Pediatric Complex Care Collaborative (PC3) for the Johns Hopkins Children’s Center. Dr. Mixter received her A.B. from Harvard College. She earned her M.D. from Harvard Medical School and M.P.H. from the Harvard School of Public Health. She completed her residency at Johns Hopkins as part of the inaugural group of trainees in the Urban Health Combined Internal Medicine-Pediatrics Residency Program. Her research interests include transitions of care for adolescents with special healthcare needs and education for residents and medical students, especially in primary care and complex care. Dr. Mixter has served as the Assistant Chief of Service for the Longcope firm of the Osler Medical Housestaff Training Program (2015-16), as well as Assistant Program Director for Ambulatory Education (2014-15). Dr. Mixter is rated as an Experienced provider by MediFind in the treatment of Noonan Syndrome. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Cerebral Palsy, Gastroparesis, Orbital Cellulitis, and Sickle Cell Disease. Dr. Mixter is board certified in American Board Of Pediatrics and American Board Of Internal Medicine.
Rubenstein Child Health Building
Dr. Janet L. Crane is an Associate Professor of Pediatrics at the Johns Hopkins University School of Medicine. Dr. Crane is the Director of the Pediatric Bone Health Program, which focuses on the care of children with rare metabolic bone diseases and osteoporosis/skeletal fragility syndromes. Dr. Crane received her bachelor’s degree in nutritional science from the University of Missouri. She completed her medical degree at the University of Maryland-Baltimore, residency in pediatrics at Children's Mercy Hospital and Clinics in Kansas City, Missouri and fellowship in pediatric endocrinology at Johns Hopkins University in 2013. Dr. Crane is a faculty member of the Center for Musculoskeletal Research. Her research is focused on bone modeling and remodeling factors that result in proper bone growth and strength. The goal of her studies is to identify diagnostic markers and therapeutic targets to enhance bone strength in children who have recurrent fractures. Dr. Crane also participates in industry sponosored clinical studies to investigate the safety and efficacy of medications for metabolic bone disease and skeletal fragility. Dr. Crane is rated as an Experienced provider by MediFind in the treatment of Noonan Syndrome. Her clinical expertise encompasses Osteogenesis Imperfecta, Juvenile Primary Osteoporosis, Short Stature (Growth Disorders), and Noonan Syndrome. Dr. Crane is board certified in American Board Of Pediatrics.
Prince George's County
Ian Hovis, MD, completed a bachelor’s degree from University of Wisconsin in natural sciences and communication arts – film, radio and television, before earning a medical degree from New York Medical College in Valhalla, NY, and moving on to a pediatric residency at Montefiore Children’s Hospital in Bronx, NY. He joined Children's National as a cardiology fellow in 2015 and became a faculty member in August 2018. Dr. Hovis has a deep interest in education and clinical cardiology, and is very active in clinical research projects. He sees patients in both the inpatient and outpatient settings at the main campus in Washington, D.C., as well as at the cardiology clinic at the Montgomery County Outpatient Center and the Calvert Cardiology Clinic. Dr. Hovis is rated as an Experienced provider by MediFind in the treatment of Noonan Syndrome. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Heart Murmurs, Congenital Heart Block, Ventricular Septal Defects, and Scarlet Fever. Dr. Hovis is board certified in American Board Of Pediatrics, 2018 and Pediatrics: American Board Of Pediatrics, 2015.
Frederick
Michelle Udine, MD, is a pediatric and fetal cardiologist at Children’s National Hospital and assistant professor of Pediatrics at George Washington University. She completed medical school at Rutgers Robert Wood Johnson Medical School followed by pediatrics residency and chief residency year at the University of Alabama Birmingham. She completed her training in pediatric cardiology and advanced cardiac imaging at Children’s National. She specializes in fetal echocardiography, transthoracic and transesophageal echocardiography, cardiac MRI and CT. Her research interests include improving the outcomes of fetuses and children diagnosed with congenital heart disease, the impact of socioeconomic disparities on congenital heart disease outcomes and the use of multimodality cardiac imaging and fetal cardiovascular MRI to improve the accuracy of diagnosis. Dr. Udine is rated as an Experienced provider by MediFind in the treatment of Noonan Syndrome. Her clinical expertise encompasses Tetralogy of Fallot, Congenital Heart Disease (CHD), Double Aortic Arch, and Patent Ductus Arteriosus. Dr. Udine is board certified in Pediatric Cardiology: American Board Of Pediatrics, 2022 and Pediatrics: American Board Of Pediatrics, 2017.
Annapolis
Gerard Martin, MD, FAAP, FACC, FAHA, is a cardiologist at Children's National Hospital, where he has been in practice since 1986. Dr. Martin was promoted to professor of pediatrics (with tenure) at George Washington University School of Medicine & Health Sciences in 1995 and served as the chief of cardiology, 1997-2009, and senior vice president for the Center for Heart, Lung and Kidney Disease, 1999-2015. He founded the Heart and Lung Center in 2004, and was named the 2007 C. Richard Beyda professor of cardiology. Dr. Martin was educated at Syracuse University and the State University of New York, Upstate School of Medicine. After a residency at Brown University and the Rhode Island Hospital, he received training in pediatric cardiology at the Cardiovascular Research Institute at the University of California, San Francisco. He has published over 150 peer-reviewed manuscripts, book chapters, and invited publications and has presented abstracts at over 125 meetings. Dr. Martin is an invited lecturer who has traveled to over 200 meetings, hospitals and universities within the U.S., as well as around the world. Additionally, Dr. Martin is an advocate for congenital heart disease (CHD) efforts nationally and internationally. He played integral roles in the development of CCHD screening and the sub-board of Adult Congenital Heart Disease in the U.S. Dr. Martin also has served as a volunteer on medical missions to developing countries, and as a consultant within the U.S., South America, Asia and the Middle East. Dr. Martin is board-certified in pediatric cardiology, a fellow of the American Academy of Pediatrics and the American College of Cardiology, and a member of the Society for Pediatric Research and the American Board of Pediatrics. He has served or is currently serving on the sub-board of Pediatric Cardiology, American Board of Pediatrics; the chair of the Section Adult Congenital and Pediatric Cardiology, American College of Cardiology; a member of the American Board of Internal Medicine, sub-board of Adult Congenital Heart Disease; and the board of trustees, American College of Cardiology. Dr. Martin is rated as an Experienced provider by MediFind in the treatment of Noonan Syndrome. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Congenital Heart Disease (CHD), Ventricular Septal Defects, Pulmonary Atresia, and Heart Murmurs. Dr. Martin is board certified in Adult Congenital Heart Disease: American Board Of Internal Medicine, 2015, Pediatric Cardiology: American Board Of Pediatrics, 1988, and Pediatrics: American Board Of Pediatrics, 1986.
LifeBridge Pediatric Endocrinology-Sinai
Debra Counts is a Pediatric Endocrinologist practicing medicine in Baltimore, Maryland. Dr. Counts is rated as an Experienced provider by MediFind in the treatment of Noonan Syndrome. She is also highly rated in 19 other conditions, according to our data. Her clinical expertise encompasses Idiopathic Short Stature (ISS), Klinefelter Syndrome, Short Stature (Growth Disorders), and Pediatric Growth Hormone Deficiency.
Office
Melissa Pagan is a Pediatrics provider practicing medicine in Baltimore, Maryland. Dr. Pagan is rated as an Experienced provider by MediFind in the treatment of Noonan Syndrome. She is also highly rated in 3 other conditions, according to our data. Her clinical expertise encompasses Short Stature (Growth Disorders), Familial Short Stature (FSS), Idiopathic Short Stature (ISS), and Precocious Puberty.
Lifebridge Pediatric Endocrinology-Quarry Lake
Ryan Miller is a Pediatric Endocrinologist practicing medicine in Baltimore, Maryland. Dr. Miller is rated as an Experienced provider by MediFind in the treatment of Noonan Syndrome. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Short Stature (Growth Disorders), Idiopathic Short Stature (ISS), Familial Short Stature (FSS), and Pediatric Growth Hormone Deficiency.
Advanced Pain Management Specialists LLC
Elizabeth Parker is a Pediatric Endocrinologist practicing medicine in Annapolis, Maryland. Dr. Parker is rated as an Experienced provider by MediFind in the treatment of Noonan Syndrome. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Short Stature (Growth Disorders), Idiopathic Short Stature (ISS), Familial Short Stature (FSS), and Precocious Puberty.
Univ Of Maryland School Of Med
Carol Greene is a Pediatrics provider practicing medicine in Baltimore, Maryland. Dr. Greene is rated as an Experienced provider by MediFind in the treatment of Noonan Syndrome. Her clinical expertise encompasses Musculocontractural Ehlers-Danlos Syndrome (mcEDS), Phenylketonuria (PKU), Increased Head Circumference, and MELAS Syndrome. Dr. Greene is board certified in American Board Of Medical Genetics And Genomics and American Board Of Pediatrics.
Rubenstein Child Health Building
Ambroise Wonkam is a Pediatrics specialist and a Medical Genetics provider practicing medicine in Baltimore, Maryland. Dr. Wonkam is rated as an Experienced provider by MediFind in the treatment of Noonan Syndrome. He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Anemia, Fragile X Syndrome, Pyle Disease, and Micrognathia.
Rubenstein Child Health Building
Dr. Hilary Vernon is a Professor of Genetic Medicine and pediatrics at the Johns Hopkins University School of Medicine. She is also an attending physician at Kennedy Krieger Institute. Hilary Vernon has expertise in treating inborn errors of metabolism and mitochondrial disorders. She is the director of the Mitochondrial Care Center at The Johns Hopkins Hospital and the Barth Syndrome Interdisciplinary Clinic at the Kennedy Krieger Institute. Her research interests include understanding intermediary metabolism in Barth syndrome and in disorders of branch chain amino acid metabolism. Dr. Vernon also co-directs the Department of Genetic Medicine Clinical Trials Unit, and is the principal investigator on multiple clinical trials for rare diseases. Dr. Vernon received her medical degree and doctorate from Rutgers University, New Brunswick, New Jersey. She completed residencies in genetics and pediatrics at The Johns Hopkins University, and a fellowship in clinical laboratory biochemical genetics at The Johns Hopkins University. Dr. Vernon was recognized with the 2010 Francis F. Schwentker Award for Excellence in Research at Johns Hopkins University and the 2011 James B. Sidbury Jr. Fellowship in Biochemical Genetics at Johns Hopkins University. Dr. Vernon is rated as an Experienced provider by MediFind in the treatment of Noonan Syndrome. She is also highly rated in 12 other conditions, according to our data. Her clinical expertise encompasses Methylmalonic Acidemia, Propionic Acidemia, Progressive External Ophthalmoplegia, and Infantile Neutropenia. Dr. Vernon is board certified in American Board Of Medical Genetics And Genomics and American Board Of Pediatrics.
Maximilian Muenke is a Medical Genetics provider practicing medicine in Bethesda, Maryland. Dr. Muenke is rated as an Experienced provider by MediFind in the treatment of Noonan Syndrome. He is also highly rated in 13 other conditions, according to our data. His clinical expertise encompasses Holoprosencephaly, Turner Syndrome, Corpus Callosum Agenesis, and Chromosome 7q Duplication.
Marshall Summar is a Medical Genetics specialist and a Pediatrics provider practicing medicine in Chevy Chase, Maryland. Dr. Summar is rated as an Experienced provider by MediFind in the treatment of Noonan Syndrome. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Argininosuccinic Aciduria, Urea Cycle Disorders (UCD), Propionic Acidemia, and Ornithine Translocase Deficiency.
Leslie Biesecker is a Medical Genetics specialist and a Pediatrics provider practicing medicine in Bethesda, Maryland. Dr. Biesecker is rated as an Experienced provider by MediFind in the treatment of Noonan Syndrome. He is also highly rated in 17 other conditions, according to our data. His clinical expertise encompasses Proteus Syndrome, Proteus-Like Syndrome, Acromicric Dysplasia, and Lenz Microphthalmia Syndrome.
Greater Baltimore Medical Center Inc
Antonie Kline is a Medical Genetics specialist and a Pediatrics provider practicing medicine in Baltimore, Maryland. Dr. Kline is rated as an Experienced provider by MediFind in the treatment of Noonan Syndrome. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Cornelia De Lange Syndrome, Micrognathia, Ehlers-Danlos Syndrome (EDS), and Crouzon Syndrome. Dr. Kline is currently accepting new patients.
Sinai General Medicine Associates
Sheena Moorthy is a primary care provider, practicing in Hospital Medicine in Baltimore, Maryland. She has been practicing medicine for over 10 years. Dr. Moorthy is rated as an Experienced provider by MediFind in the treatment of Noonan Syndrome. Her clinical expertise encompasses Acute Kidney Failure, Macroglossia, Gitelman Syndrome, and Peptic Ulcer.
Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc
Pim Suwannarat is a Medical Genetics specialist and a Pediatrics provider practicing medicine in Frederick, Maryland. Dr. Suwannarat is rated as an Experienced provider by MediFind in the treatment of Noonan Syndrome. She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses Triple X Syndrome, Classic Galactosemia, Ehlers-Danlos Syndrome (EDS), and Chromosome 10q Deletion. Dr. Suwannarat is currently accepting new patients.
Kennedy Krieger Institute
Heather Riordan is a Pediatric Neurologist practicing medicine in Baltimore, Maryland. Dr. Riordan is rated as an Experienced provider by MediFind in the treatment of Noonan Syndrome. She is also highly rated in 8 other conditions, according to our data. Her clinical expertise encompasses Cerebral Palsy, Focal Dystonia, Transient Tic Disorder, Spastic Diplegia Infantile Type, and Rhizotomy. Dr. Riordan is board certified in American Board Of Psychiatry And Neurology.
Last Updated: 06/30/2026







