Michelle Petri, M.D. is a Professor of Medicine at the Johns Hopkins University School of Medicine. She attended medical school at Harvard University and fulfilled her internal medicine residency at the Massachusetts General Hospital. In addition, she completed two fellowship programs at the University of California, San Francisco in allergy and immunology and rheumatology. Dr. Petri is the Director of the Hopkins Lupus Cohort, a longitudinal study of morbidity and mortality in systemic lupus erythematosus, and Co-Director of the Hopkins Lupus Pregnancy Center. Dr. Petri is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. Her top areas of expertise are Lupus Nephritis, Systemic Lupus Erythematosus (SLE), Cutaneous Lupus Erythematosus (CLE), Tenotomy, and Osteotomy.

Todd T. Brown, MD, PhD is a clinical investigator who focuses on body composition, metabolic, and skeletal abnormalities observed in people with HIV, particularly as related to aging. Through translational investigation, epidemiologic studies, and clinical trials, he has been interested in understanding the pathogenesis of glucose disorders, fat changes, hormonal dysregulation, and osteoporosis in people with HIV, the consequences of these conditions (eg cardiovascular disease, frailty), and their optimal evaluation and management. Dr. Brown is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Low Blood Sugar, Osteoporosis, Malnutrition, Gastric Bypass, and Gastrostomy.

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 rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. 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. Gregory M. Lucas is an associate professor of medicine at the Johns Hopkins University School of Medicine. His areas of clinical expertise include HIV/AIDS and infectious disease. Dr. Lucas received his undergraduate degree from the University of Notre Dame. He earned his M.D. from Duke University School of Medicine and his Ph.D. from Johns Hopkins. He completed his residency and performed a fellowship in infectious diseases at Johns Hopkins. He serves on the faculties of the Center for AIDS Research, where he is co-director of the Substance Use Scientific Working Group; the Center for Substance Abuse Treatment and Research; the Center for Adolescent Health; and the Heart and Vascular Institute. Dr. Lucas is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are HIV/AIDS, Hepatitis C, Myelitis, and AIDS Dementia Complex.

Dr. Jodi Segal is a professor of medicine at the Johns Hopkins University School of Medicine. She has joint appointments in health policy and management, and epidemiology at the Johns Hopkins Bloomberg School of Public Health. Dr. Segal is internationally recognized as a clinician-investigator in comparative effectiveness research and pharmacoepidemiology. She trains investigators to conduct research to advance Johns Hopkins Medicine as a learning health system. She serves as the associate director of the Center for Health Services and Outcomes Research (CHSOR) and the co-director of the Center for Drug Safety and Effectiveness (CDSE), both in the School of Public Health. Dr. Segal received a B.S. from The Pennsylvania State University. She earned her M.D. from the University of Pittsburgh School of Medicine and her M.P.H. from the Johns Hopkins Bloomberg School of Public Health. She completed her residency at the University of Chicago and a fellowship in general nternal medicine at Johns Hopkins. She is a member of Phi Beta Kappa and Alpha Omega Alpha. Dr. Segal is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her top areas of expertise are Giant Papillary Conjunctivitis, Type 2 Diabetes (T2D), Vernal Keratoconjunctivitis, and Allergic Conjunctivitis.

Dr. Lechtzin is a pulmonary and critical care medicine physician. He directs the Adult CF program and the neuromuscular pulmonary clinic at Johns Hopkins and is an expert in the treatment of cystic fibrosis, pulmonary complications of neuromuscular disease and the care of critically ill patients in the Medical ICU. He is a member of the Longcope Firm Faculty and provides teaching to medical students and residents at Johns Hopkins. Dr. Lechtzin is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Cystic Fibrosis, Secondary Immunodeficiency (SID), Newborn Jaundice, Lung Transplant, and Endoscopy.

Carol Ann Huff, M.D., is an Associate Professor of Oncology and Medicine at the Johns Hopkins University School of Medicine and Medical Director for the Johns Hopkins Kimmel Cancer Center. After completing a Bachelor of Science in Zoology at Duke University in Durham, NC, Dr. Huff received her medical degree from Baylor College of Medicine in Houston. She completed her internship and residency in Internal Medicine at Johns Hopkins and was an Assistant Chief of Service in the Department of Medicine before completing her fellowship training in the Department of Oncology at Johns Hopkins University. Dr. Huff is a nationally-recognized expert in the treatment of multiple myeloma and amyloidosis and in the development of new biologically-based treatment strategies. She has sought to better understand the mechanisms for recurrence and the inability to cure these diseases. Through this research, the identification of a myeloma cancer stem cell has emerged, and efforts to target these cells through combination therapy in clinical trials are ongoing. In collaboration with Dr. William Matsui, Dr. Huff has identified a flow cytometric-based blood analysis for multiple myeloma patients that can be used to quantify the number of myeloma cancer stem cells and track how these cells respond to treatment. Their efforts have revealed that changes in the number of myeloma cancer stem cells can predict recurrence in myeloma patients before clinical evidence of recurrence is detectable. Using this blood analysis, as well as growth of these cells from bone marrow samples taken from patients with myeloma, they have begun studying therapeutic strategies to target these cells based on cell surface markers and enzymatic pathways that are important to the survival of myeloma stem cells. Dr. Huff is the recipient of multiple awards for clinical and teaching excellence including the Kimmel Cancer Center's Director’s Teaching Award in Oncology in both 2006 and 2012. During her medical school training, Dr. Huff was the recipient of a Howard Hughes Medical Institute-National Institutes of Health (NIH) fellowship. She has received grant support from the NIH, Multiple Myeloma Research Foundation, and Leukemia and Lymphoma Society. and LLS, and is the principal investigator of numerous investigator-initiated and industry- sponsored clinical trials. She is the author of numerous publications and book chapters not only on multiple myeloma and related disorders, but also on bone marrow transplantation and a range of topics related to internal medicine and oncology. Her current research efforts involve active collaboration with the preclinical laboratories in the development and testing phases of new therapeutic approaches, as well as a lead effort in the national African American Myeloma Consortium seeking to better understand genetic determinants of the disease. Dr. Huff is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her top areas of expertise are Multiple Myeloma, Relapsed Refractory Multiple Myeloma (RRMM), Smoldering Multiple Myeloma, and Plasmacytoma.

Dr. Leticia Manning Ryan is an Associate Professor of Pediatrics at the Johns Hopkins University School of Medicine and has a joint appointment in the Johns Hopkins Bloomberg School of Public Health. Her areas of clinical expertise include pediatric emergency medicine. Dr. Ryan received her medical degree with honors from the University of Vermont College of Medicine and a master’s degree in public health, from the George Washington University School of Public Health and Health Services. She completed her clinical training (residency in pediatrics, chief residency in pediatrics, fellowship in pediatric emergency medicine) from 1999-2006 at Children’s National Medical Center in Washington, DC where she remained as a faculty member until 2013. Dr. Ryan’s research focuses on injury and violence prevention and has been funded through the National Institutes of Health and national and regional foundations. She completed a K23 Career Development Award to study the role of bone health in pediatric fractures and is a selected participant in the Robert Wood Johnson Foundation Interdisciplinary Research Leaders Program. Dr. Ryan has authored or co-authored more than forty articles and book chapters in the fields of injury and emergency medicine. Dr. Ryan is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her top areas of expertise are Vitamin D Deficiency, Malnutrition, and Sudden Infant Death Syndrome (SIDS).

Dr. Gary Gerstenblith is professor of medicine and director of clinical trials in the Johns Hopkins Medicine Division of Cardiology. He also serves as attending physician in r the Cardiology care Unit. Dr. Gerstenblith earned his undergraduate degree from New York University and his medical degree from the University of Pennsylvania School of Medicine. After working at the National Institute on Aging and the National Institutes of Health (NIH) and completing a fellowship at Jackson Memorial Hospital in Miami, Dr. Gerstenblith joined the faculty of the Johns Hopkins University School of Medicine. Dr. Gerstenblith conducts clinical trials in patients with cardiovascular disease. His research interests include the impact of cardiovascular aging on cardiac structure and function, and the use of stem cells to repair damaged cardiac muscle. He has published nearly 250 articles and book chapters and has been a referee for numerous journals including Circulation, The New England Journal of Medicine and The Journal of the American College of Cardiology. Dr. Gerstenblith is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Heart Attack, Atherosclerosis, Coronary Heart Disease, Apoplexy, and Percutaneous Coronary Intervention (PCI).

Dr. Elliot K. Fishman is a Professor in the Johns Hopkins Medicine Department Radiology and Radiological Science, Department of Oncology and Department of Surgery. He serves as a member of the Johns Hopkins Kimmel Cancer Center. His clinical and research interests focus on medical imaging with specific emphasis on three-dimensional (3D) imaging and computed tomography (CT). Dr. Fishman received his B.S. in 1973 and M.D. in 1977 from the University of Maryland. After a residency at Sinai Hospital in Baltimore, he completed a fellowship in CT at Johns Hopkins in 1980 and joined the Johns Hopkins faculty in 1981 as an Assistant Professor. In 1986, he became Associate Professor and, in 1991, Professor of Radiology and Oncology. He is a leader in the development of 3D imaging and rendering, including its impacts on and uses in patient care and management. He was involved from the beginning in the development of 3D imaging through his work with Pixar, which was a spin-off from LucasFilms in San Rafael, California. Over the last 25 years, Dr. Fishman continued to help develop 3D imaging and has been a leader in the development of interactive 3D rendering. His team is consistently at the forefront of research and development of new visualization and post-processing techniques and technologies. Dr. Fishman's extensive body of work in CT has resulted in over 1,000 peer-reviewed publications, and he is the author or co-author of 10 textbooks. He is the recipient of three prestigious Aunt Minnie Awards, honoring his outstanding contributions as both an educator and researcher. In 2007, he was named by Medical Imaging Magazine as the Top Radiologist in the Nation. He is a member of editorial boards for more than 35 journals, an active member of several professional radiology associations and is a past-president of the Society of Body CT/MR. Dr. Fishman is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Neuroendocrine Tumor, Pancreatic Ductal Adenocarcinoma, Cavernous Lymphangioma, Pancreaticoduodenectomy, and Pancreatectomy.

Dr. Becker is a neurologist who earned his Medical Degree from Ruprecht Karls University in Heidelberg, Germany in 2001. From 2001 to 2003, he was a Research Assistant in Neuroscience investigating the role of embryonic stem cells in spinal cord injury repair at Washington University School of Medicine in St. Louis, Missouri. At Vanderbilt University Medical Center in Nashville, Tennessee, he completed his residency in Internal Medicine in 2004 and his residency in Neurology in 2007. From there, he completed a year-long fellowship in Spinal Cord Injury Medicine at the Johns Hopkins School of Medicine in Baltimore, MD. Dr. Becker is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Multiple Sclerosis (MS), Paraplegia, Relapsing Multiple Sclerosis (RMS), and Cerebellar Multiple System Atrophy.

Dr. Gregory Kirk is a professor of medicine at the Johns Hopkins University School of Medicine. He holds joint appointments in oncology and, at the Johns Hopkins Bloomberg School of Public Health, in epidemiology. His areas of clinical expertise include epidemiology, hepatitis, HIV, AIDS and infectious diseases. He serves as the vice chair for clinical and translational research at the Johns Hopkins School of Medicine. Dr. Kirk received his undergraduate degree from Oklahoma State University. He earned a Ph.D. and M.P.H. from the Johns Hopkins Bloomberg School of Public Health. He earned his M.D. from the University of Oklahoma Health Sciences Center College of Medicine. He completed a residency in preventative medicine at the Johns Hopkins Bloomberg School of Public Health and in internal medicine at Georgetown University. He performed a fellowship in infectious diseases at the National Institute of Allergy and Infectious Diseases. His research focuses on understanding and preventing the long-term consequences of chronic HIV infection, particularly the malignant complications of HIV and viral hepatitis. He has extensive research and clinical experience in Africa, leading the Gambia Liver Cancer Study, one of the largest studies of hepatocellular carcinoma (HCC) performed in the continent, in addition to years of collaborative research in Uganda. Dr. Kirk pioneered the use of elastography and application of novel aflatoxin-associated biomarkers of HCC risk to be applied in Consortium projects. He has strong, multidisciplinary team leadership skills as principal investigator of the ALIVE cohort and several other collaborative studies in Baltimore. Dr. Kirk is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are HIV/AIDS, Hepatitis C, Hepatitis, and Hepatitis B.

Dr. Shadpour Demehri is a Professor in the Johns Hopkins Medicine Department of Radiology and Radiological Science. He specializes in diagnostic radiology and musculoskeletal (MSK) radiology. Dr. Demehri received his M.D. from Tehran University School of Medicine in 2003. He completed a fellowship in radiology at Johns Hopkins University School of Medicine. He performed his residency in diagnostic radiology in 2010 at Brigham & Women’s Hospital, where he subsequently completed two fellowships, one in musculoskeletal and nuclear radiology and a second in noninvasive cardiovascular imaging. He joined the Johns Hopkins faculty in September 2012. Dr. Demehri is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Undifferentiated Pleomorphic Sarcoma, Rhabdomyosarcoma Embryonal, Ollier Disease, Osteotomy, and Aneurysm Repair.

Bob Bollinger is an Infectious Disease provider in Baltimore, Maryland. Dr. Bollinger is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are HIV/AIDS, Vitamin D Deficiency, COVID-19, and Severe Acute Respiratory Syndrome (SARS).

Dr. Mohamad Hanouneh is an Assistant Professor of Medicine at the Johns Hopkins University School of Medicine. His areas of clinical expertise include renal medicine. Dr. Hanouneh grew up in Syria and completed his medical school in Tishreen University in Latakia, Syria. He completed Internal Medicine Residency training at Cleveland Clinic, and Nephrology Fellowship at Johns Hopkins. Dr. Hanouneh currently serves as a part-time faculty in the Division of Nephrology at Johns Hopkins. He also works in the Nephrology Center of Maryland covering Good Samaritan and Upper Chesapeake Hospitals. Dr. Hanouneh has a passion in medical education. He runs the nephrology board review course and participates in Genes to Society Course of Renal Physiology, which is given to the medical students at Johns Hopkins University School of Medicine. His area of interests are electrolytes disorders, diabetic kidney disease and nephrolithiasis. Dr. Hanouneh is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Low Potassium Level, End-Stage Renal Disease (ESRD), Chronic Kidney Disease, and High Potassium Level.

Dr. Albert Recio is an assistant professor of physical medicine and rehabilitation at the Johns Hopkins University School of Medicine. His areas of clinical expertise include spinal cord injury, spasticity management, wound healing, paralysis restoration and aquatics medicine. He is a physician in the paralysis restoration program at the International Center for Spinal Cord Injury at the Kennedy Krieger Institute and medical director for the aquatics medicine program there. Dr. Recio received his medical degree from the Perpetual Help College of Medicine in the Philippines. He began internship training there and completed it at Jackson Park Hospital in Chicago. Dr. Recio did his physical medicine and rehabilitation residency at Spaulding Rehabilitation Hospital, which is associated with Harvard Medical School. He then performed a fellowship in spinal cord injury medicine at University of Washington Medical Center. His research interests include functional electrical stimulation, activity-based restoration therapy and electrical stimulation for wound healing. For more than 15 years, Dr. Recio has been a volunteer physician for medical missions in the Republic of the Philippines. He is a member of the American Paraplegia Society, the Association of Academic Physiatrists, the American Academy of Physical Medicine and Rehabilitation and the International Society of Physical Medicine and Rehabilitation. Dr. Recio is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Paraplegia, Neurogenic Bowel, Transverse Myelitis, and Spasticity.

Dr. Philippines Cabahug is an assistant professor of physical medicine and rehabilitation at the Johns Hopkins University School of Medicine. Dr. Cabahug completed her residency in physical medicine and rehabilitation at Johns Hopkins and got her clinical fellowship in spinal cord injury medicine at Kennedy Krieger Institute (KKI), where she joined the International Center for Spinal Cord Injury as a full-time physician. Dr. Cabahug has worked on several publications regarding Lean Six Sigma Quality Improvement Project focused on improving discharge paperwork. She is also an online contributor to “PM&R Knowledge Now,” the online resource of the American Academy of Physical Medicine and Rehabilitation. Dr. Cabahug is the director of Musculoskeletal Ultrasound (MSK-US) at KKI. She runs two MSK-US clinics at KKI: a musculoskeletal diagnostic clinic and an ultrasound-guided intrathecal pump access clinic. Dr. Cabahug is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her top areas of expertise are Paraplegia, Spasticity, Opisthotonos, and Muscle Spasms.

Dr. Cristina L. Sadowsky is an assistant professor of physical medicine and rehabilitation at the Johns Hopkins University School of Medicine. Her areas of clinical expertise include spinal cord injury and paralysis restoration. Dr. Sadowsky is also a founder and the clinical director of the International Center for Spinal Cord Injury at the Kennedy Krieger Institute. This program was built on the philosophy that functional restoration is possible for a long time after an injury, utilizing structured medico-rehabilitative interventions through activity-based restorative therapies (ABRT). She serves as a section editor for Physical Medicine and Rehabilitation Reports and is a recurrent invited reviewer for several peer-reviewed medical journals and government and privately funded competitive grant awards for spinal cord injury related research. Dr. Sadowsky has organized numerous courses and seminars, and has been invited to lecture in different universities and at national and international meetings, such as the American Academy of PM&R, American Spinal Cord Injury Association, International Spinal Cord Society and many more. She has published several manuscripts in highly regarded peer-reviewed journals and chapters in prominent specialty books. Dr. Sadowsky is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her top areas of expertise are Paraplegia, Acute Flaccid Myelitis (AFM), Spasticity, Neurogenic Bowel, and Osteotomy.

Kerri An Mross, M.D., practices internal medicine at Johns Hopkins Community Physicians Remington. She received her medical degree from Virginia Commonwealth University Medical College of Virginia, and completed her residency in internal medicine at University of Virginia School of Medicine. Dr. Mross is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her top areas of expertise are Hypertension, Familial Hypertension, Glucocorticoid-Remediable Aldosteronism, and Mycosis Fungoides.

Dr. Sujay Pathak holds dual roles with Johns Hopkins Community Physicians as a primary care provider, and with the Johns Hopkins University School of Medicine, as director of the Advanced Ambulatory Clerkship. This position places him squarely at the intersection of primary care theory and practice. He brings both the theoretical expertise and the immense clinical resources of Johns Hopkins Medicine to the clinical care of individuals from all walks of life. As such, he holds himself to the standard of our great primary care leaders in the division of General Internal Medicine, and exemplifies for learners and patients the sort of personalized, expert, compassionate, and high-value care that you'd expect for yourself or your family. As the Physician Quality Champion for both the JHCP Remington Site, as well as for Johns Hopkins Community Physicians more broadly, Dr. Pathak helps JHCP providers embrace the future of healthcare and adapt their practice style to more effectively manage their patient panels. As such, he works to transform healthcare to meet the complex needs of our Johns Hopkins entire patient population, keeping their conditions well-managed, their preventive care needs met, and ultimately, ensuring the best possible outcome for each one. Videos The Hospital Elective: How a personal experience led one provider to create a chance for med students to 'walk in the shoes' of non physicians. Dr. Pathak is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Type 2 Diabetes (T2D), Maturity Onset Diabetes of the Young, Familial Hypertension, and Hypertension.