Nicholas Argento, M.D. attended Georgetown University and graduated Magna Cum Laude with a BS in Biology, then the University of Maryland School of Medicine and graduated Cum Laude. He completed his residency in Internal Medicine and fellowship in Diabetes, Endocrine and Metabolism at the University of Maryland Medical System. He joined Maryland Endocrine full time in 1991. He has been the Medical Advisor to the diabetes program at Johns Hopkins Howard County Medical Center since 1995, and gives talks regularly to medical and patient audiences on diabetes. He has a strong interest in type 1 diabetes (T1D), and has extensive experience in utilizing insulin pumps and continuous glucose monitoring (CGM) to help patients safely achieve better blood glucose control. He has 4 publications in medical journals on different aspects of CGM use, and was co-author or contributor to multiple chapters in the 2013 American Diabetes Association book, Putting Your Patient On The Pump, 2nd edition. He has presented clinical research multiple times at the American Diabetes Association Scientific Sessions and other medical meetings, and has spoken to local, national, and international audiences on insulin pumps and the clinical application of CGM technology. He is very active on and lends medical support to and has written numerous articles for the T1DExchange website myglu.org, a website dedicated to outreach, research and engagement of and for the T1D community. For more information, visit marylandendocrine.com. Dr. Argento is highly rated in 6 conditions, according to our data. His top areas of expertise are Type 1 Diabetes (T1D), Hypothyroidism, Type 2 Diabetes (T2D), and Vitamin D Deficiency.

David Levitt is an Endocrinologist in Hanover, Maryland. Dr. Levitt is highly rated in 11 conditions, according to our data. His top areas of expertise are Type 1 Diabetes (T1D), Type 2 Diabetes (T2D), Hypothyroidism, and Hyperthyroidism.

Lynne Gaynes is an Endocrinologist in Columbia, Maryland. Dr. Gaynes is highly rated in 10 conditions, according to our data. Her top areas of expertise are Hypothyroidism, Obesity in Children, Type 2 Diabetes (T2D), and Maturity Onset Diabetes of the Young.

Asif Mohamed is an Endocrinologist in Columbia, Maryland. Dr. Mohamed is highly rated in 10 conditions, according to our data. His top areas of expertise are Papillary Thyroid Cancer, Medullary Thyroid Carcinoma, Thyroid Cancer, and Follicular Thyroid Cancer.

Rozalina Mccoy is an Endocrinologist in Baltimore, Maryland. Dr. Mccoy is highly rated in 7 conditions, according to our data. Her top areas of expertise are Type 2 Diabetes (T2D), Low Blood Sugar, Maturity Onset Diabetes of the Young, and Diabetic Hyperglycemic Hyperosmolar Syndrome.

Ann Hagen is an Endocrinologist in Columbia, Maryland. Dr. Hagen is highly rated in 6 conditions, according to our data. Her top areas of expertise are Hypothyroidism, Obesity in Children, Type 1 Diabetes (T1D), and Vitamin D Deficiency.

Elizabeth Jenkins is an Endocrinologist in Columbia, Maryland. Dr. Jenkins is highly rated in 3 conditions, according to our data. Her top areas of expertise are Hirsutism in Women, Type 2 Diabetes (T2D), Hypothyroidism, and Hyperthyroidism.

Pamela Quinlan is an Endocrinologist in Columbia, Maryland. Dr. Quinlan is highly rated in 2 conditions, according to our data. Her top areas of expertise are Type 2 Diabetes (T2D), Type 1 Diabetes (T1D), Obesity in Children, and Hypothyroidism.

Dr. Douglas Ball is an associate professor of medicine at the Johns Hopkins University School of Medicine. He holds a joint appointment in oncology. His areas of clinical expertise include diagnostic radiology, endocrine oncology, thyroid cancer and thyroid diseases. Dr. Ball earned his M.D. from the George Washington University School of Medicine. He completed his residency at the University of Pittsburgh-Presbyterian University Hospital and performed a fellowship in endocrinology and metabolism at Johns Hopkins. His research interests include medullary thyroid cancer, differentiated thyroid cancer and anaplastic thyroid cancer. Dr. Ball is highly rated in 20 conditions, according to our data. His top areas of expertise are Medullary Thyroid Carcinoma, Thyroid Cancer, Anaplastic Thyroid Cancer, Papillary Thyroid Cancer, and Thyroidectomy.

David S. Cooper, MD, MACP is a graduate of the Tufts University School of Medicine and completed his endocrinology training at Massachusetts General Hospital and Harvard Medical School. He is currently Professor of Medicine and Radiology at the Johns Hopkins University School of Medicine and Professor of International Health at the Johns Hopkins Bloomberg School of Public Health. He is one of the editors of the iconic textbook on thyroid disease, Werner and Ingbar’s The Thyroid, and he co-edits two other textbooks: Medical Management of Thyroid Disease and Thyroid Cancer. He is also the co-author of a book for patients with thyroid disease entitled Your Thyroid: A Home Reference. He is the past Chair of the Subspecialty Board for Endocrinology, Diabetes, and Metabolism of the American Board of Internal Medicine. He is an Editor-in-Chief for Endocrinology at Up-to-Date, and he has served as the Chair of the Endocrine Society’s annual Board Review Course. Dr. Cooper was the Chair of the American Thyroid Association’s (ATA) 2006 and 2009 task forces that first drafted clinical practice guidelines for the management of thyroid nodules and thyroid cancer. He also served on ATA sponsored task forces that promulgated guidelines for the management of hypothyroidism and for the management of hyperthyroidism. He is the past Treasurer and past President of the ATA, and the recipient of the ATA’s Distinguished Service Award, its Paul Starr Award, and the Lewis Braverman Lectureship Award. He is also the recipient of the Distinction in Endocrinology Award given by the American Association of Clinical Endocrinologists, as well as the Endocrine Society’s Outstanding Scholarly Physician Laureate Award and the Outstanding Educator Laureate Award. Dr. Cooper is highly rated in 11 conditions, according to our data. His top areas of expertise are Thyroid Cancer, Graves Disease, Follicular Thyroid Cancer, Thyroidectomy, and Hormone Replacement Therapy (HRT).

Dr. Dobs is presently an active clinical researcher in the field of endocrine gonadal function. She is particularly interested in new forms of male hormone replacement therapy and has published extensively in the area of hormonal changes with aging and chronic disease. Her clinical practice covers general endocrinology, with a focus on sex hormone disorders in both men and women. As Director of the Johns Hopkins Clinical Research Network, she oversees a multi-institutional consortium of hospitals in the mid-Atlantic states dedicated to facilitating clinical research through an academic-community hospital partnership. Dr. Dobs is highly rated in 9 conditions, according to our data. Her top areas of expertise are Hypogonadism, Eunuchoidism Familial Hypogonadotropic, Testicular Failure, Isolated Hypogonadotropic Hypogonadism, and Hormone Replacement Therapy (HRT).

Heidi Karon is an Endocrinologist in Columbia, Maryland. Dr. Karon is highly rated in 8 conditions, according to our data. Her top areas of expertise are Hypothyroidism, Thyroid Storm, Hyperthyroidism, and Type 1 Diabetes (T1D).

Dr. Rita Kalyani is a Professor of Medicine at Johns Hopkins School of Medicine. She graduated with an undergraduate degree from Harvard College and completed her medical degree, residency, and fellowship at Johns Hopkins. She also obtained a Masters in Health Science degree in Clinical Investigation from the Johns Hopkins Bloomberg School of Public Health. As a NIH-funded clinician scientist, Dr. Kalyani has authored over 175 peer-reviewed publications and built a research program focused on understanding the factors leading to development of diabetes complications, particularly in high-risk populations. She has conducted epidemiological and patient-oriented research that has led to fundamental discoveries regarding the development of skeletal muscle loss, physical disability, and frailty in diabetes. She has also spearheaded studies investigating sex differences in cardiovascular disease and diabetes which have influenced primary prevention guidelines. Dr. Kalyani launched the Diabetes Management Service for Johns Hopkins’ Total Pancreatectomy Islet Auto Transplant Program in 2011. She is the co-founder of the Johns Hopkins Diabetes POC-IT Guide for healthcare professionals. She is also the founder and past Editor-in-Chief of the Johns Hopkins Patient Website to Diabetes. Dr. Kalyani has been the Chief Scientific and Medical Officer of the American Diabetes Association since 2025. She previously served as President of Medicine & Science on the ADA's National Board of Directors. She continues to have a clinical practice as an adult endocrinologist. Dr. Kalyani is highly rated in 7 conditions, according to our data. Her top areas of expertise are Seasonal Affective Disorder (SAD), Type 2 Diabetes (T2D), Maturity Onset Diabetes of the Young, Pancreatectomy, and Islet Cell Transplantation.

Dr. Mathioudakis, an endocrinologist and researcher, has a strong focus on diabetes management and patient care, recognized through awards like the Baltimore Top Doc. He has contributed significantly to diabetes research, authoring over 150 publications and participating in the development of consensus guidelines in the field. His studies have offered valuable insights into using health informatics for diabetes prevention and management. After graduating from the Johns Hopkins University School of Medicine and completing his training in Internal Medicine and a fellowship in Endocrinology, Diabetes, & Metabolism, Dr. Mathioudakis joined the faculty in the Division of Endocrinology, Diabetes & Metabolism in 2012. He earned a Master of Health Science in clinical investigation in 2015 and was the Clinical Director of the Division of Endocrinology from 2016 to 2021. Currently, he co-directs the Baltimore Metropolitan Diabetes Regional Partnership, focusing on improving access to diabetes prevention and management programs. As a physician-scientist, Dr. Mathioudakis leads multiple research studies funded by the NIH, private philanthropic organizations (Helmsley Charitable Trust), non-profit organizations (Breakthrough T1D), and industry. His research focuses on the effectiveness of automated diabetes prevention programs and strategies to reduce racial disparities in diabetes technology access. He also collaborates nationally to enhance care for people with type 1 diabetes. Holding a joint appointment in the Division of Biomedical Informatics and Data Science, Dr. Mathioudakis integrates machine learning and AI in diabetes research. He has served on the national Epic Endocrinology Specialty Steering Board and chaired the Type 2 Diabetes Prognostics Working Group for the Precision Medicine Diabetes Initiative. Committed to education, he frequently lectures on endocrinology, epidemiology, and health informatics. Dr. Mathioudakis is highly rated in 5 conditions, according to our data. His top areas of expertise are Type 2 Diabetes (T2D), Type 1 Diabetes (T1D), Low Blood Sugar, Diabetic Ketoacidosis, and Pancreaticoduodenectomy.

Dr. Paul Ladenson is a professor of medicine at the Johns Hopkins University School of Medicine. He is also a professor of oncology; pathology; and radiology and radiological science. His areas of clinical expertise include Thyroid diseases, Endocrine & Metabolic disorders. Dr. Ladenson is the John Eager Howard Professor of Endocrinology and Metabolism. He earned his M.D. from Harvard Medical School. He completed his residency and performed a fellowship in endocrinology, diabetes and metabolism at Massachusetts General Hospital. Dr. Ladenson's research interests include cardiac actions of thyroid hormone, thyroid cancer and thyroid hormone analogs. He was recognized with the Lewis E. Braverman Lectureship Award at the 82nd Annual Meeting of the American Thyroid Association (ATA) in 2012. Dr. Ladenson is highly rated in 1 condition, according to our data. His top areas of expertise are Thyroid Nodule, Adrenal Insufficiency Pediatric, Secondary Adrenal Insufficiency, Neuroendocrine Tumor, and Thyroidectomy.

Geetika Gupta is an Endocrinologist in Columbia, Maryland. Her top areas of expertise are Hypothyroidism, Vitamin D Deficiency, Type 2 Diabetes (T2D), and Obesity in Children.

Luz Tello is an Endocrinologist in Columbia, Maryland. Her top areas of expertise are Type 2 Diabetes (T2D), Maturity Onset Diabetes of the Young, Obesity in Children, and Hypothyroidism.

Roberto Salvatori is an Endocrinologist in Baltimore, Maryland. Dr. Salvatori is highly rated in 43 conditions, according to our data. His top areas of expertise are Growth Hormone Deficiency (GHD), Hypopituitarism, Pituitary Tumor, Cushing's syndrome, and Hormone Replacement Therapy (HRT).

Irfan Khan is an Endocrinologist in Greenbelt, Maryland. Dr. Khan is highly rated in 38 conditions, according to our data. His top areas of expertise are Thyroid Storm, Type 2 Diabetes (T2D), Graves Disease, and Toxic Nodular Goiter.

Hilary Whitlatch is an Endocrinologist in Baltimore, Maryland. Dr. Whitlatch is highly rated in 26 conditions, according to our data. Her top areas of expertise are Rabson-Mendenhall Syndrome, Hyperparathyroidism, Osteoporosis, and Postmenopausal Osteoporosis.

Cristian Vilcu is an Endocrinologist in Baltimore, Maryland. Dr. Vilcu is highly rated in 24 conditions, according to our data. His top areas of expertise are Maturity Onset Diabetes of the Young, Type 2 Diabetes (T2D), Adrenal Gland Adenoma, and Hypothyroidism.

Javzandulam Natsag is an Endocrinologist in Columbia, Maryland. Dr. Natsag is highly rated in 17 conditions, according to our data. Her top areas of expertise are Graves Disease, Thyroid Storm, Maturity Onset Diabetes of the Young, and Milk-Alkali Syndrome.

Nisha Abraham is an Endocrinologist in Hanover, Maryland. Dr. Abraham is highly rated in 17 conditions, according to our data. Her top areas of expertise are Type 2 Diabetes (T2D), Thyroid Nodule, Diabetic Neuropathy, and Diabetic Nephropathy.

Rana Malek is an Endocrinologist in Baltimore, Maryland. Dr. Malek is highly rated in 15 conditions, according to our data. Her top areas of expertise are Type 2 Diabetes (T2D), Addison's Disease, Type 1 Diabetes (T1D), Maturity Onset Diabetes of the Young, and Thyroidectomy.

Elizabeth Streeten is an Endocrinologist and a Medical Genetics provider in Baltimore, Maryland. Dr. Streeten is highly rated in 15 conditions, according to our data. Her top areas of expertise are Osteoporosis-Pseudoglioma Syndrome, Osteoporosis, Gaucher Disease Type 2, and Gaucher Disease Type 3.