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Can physical or cognitive activity prevent dementia?
Wondering how much your medical care will cost? New rules could help
Long-lasting healthy changes: Doable and worthwhile
Harvard Health Blog Experts
List of Experts
Wendy Stead, MD
Dr. Wendy Stead is the program director of the BIDMC infectious diseases fellowship and an assistant professor of medicine at Harvard Medical School. Dr. Stead received her BA from George Washington University and her MD from the University of Massachusetts. She completed her residency and chief residency in internal medicine at Beth Israel Deaconess Medical Center, followed by her fellowship in infectious diseases, and joined the BIDMC faculty with a joint appointment in the divisions of infectious diseases and general medicine and primary care in 2003. Her research interests include examining the effects of interspecialty education strategies on communication and collaboration between specialty services; developing resident and fellowship curricula in HIV, general infectious diseases, and trainee wellness; and communication skills in patients with opioid use disorders.
Darshan Doshi, MD, MS
Darshan Doshi, MD, is an interventional cardiologist who specializes in complex and high-risk coronary interventions.
Dr. Doshi received his BA from Columbia University’s Columbia College and his MD from Columbia University’s College of Physicians and Surgeons. He completed his internal medicine residency, and his cardiovascular medicine and interventional cardiology fellowships at the Columbia University Medical Center. Dr. Doshi also underwent additional dedicated training at Columbia in complex and high-risk interventional procedures. He was then recruited to the faculty in the Division of Cardiology at the Massachusetts General Hospital and Harvard Medical School in 2018.
Dr. Doshi also holds a MS in patient-oriented research from Columbia University’s Mailman School of Public Health with a research interest focused on clinical trials evaluating novel cardiovascular devices and therapeutics in interventional cardiology. He has authored several original manuscripts in translational and clinical cardiovascular medicine, and has published in the New England Journal of Medicine, Lancet, Journal of the American College of Cardiology, and Circulation, among many others.
Hsinlin Thomas Cheng, MD, PhD
Hsinlin Thomas Cheng, MD, PhD, is the Director of the Headache and Neuropathic Pain Unit in the Department of Neurology at Massachusetts General Hospital. He specializes in both adult Neurology and Pain Medicine. Dr. Cheng treats patients suffering from headache and other neuropathic pain syndromes.
Maryanne Makredes Senna, MD
Maryanne Makredes Senna, MD, is a board-certified dermatologist at Massachusetts General Hospital and Assistant Professor of Dermatology at Harvard Medical School. Dr. Senna founded and co-directs the MGH Hair Loss Clinic and serves as Principal Investigator of the Hair Academic Innovative Research Unit, a clinical trials research unit dedicated to hair loss disorders. She has held a number of pharmaceutical, device, and foundation appointments, and is working on bringing novel clinical innovations at MGH. Widely published and recognized for her clinical expertise, teaching, and research, Dr. Senna is frequently invited to speak and give lectures nationally and abroad. She has also been quoted in top tier media publications such as the New York Times, and featured on multiple news outlets including Good Morning America. Beyond adult and pediatric general dermatology and her extensive expertise in hair loss, Dr. Senna’s clinical interests include cutaneous reactions to chemotherapeutic agents, psoriasis, acne, and nail disorders. Dr. Senna is an esteemed member of several professional societies and committees and is on the board of directors of the Cicatricial Alopecia Research Foundation.
Sara W. Dong, MD
Dr. Sara W. Dong is a combined adult and pediatric infectious diseases fellow at Beth Israel Deaconess Medical Center and Boston Children’s Hospital. She earned her MD from the Medical University of South Carolina. She completed her internal medicine and pediatrics residency and chief residency at Ohio State University Wexner Medical Center and Nationwide Children’s Hospital. Her academic interests include transplant and global health.
Lawrence Epstein, MD
Lawrence Epstein, MD is an Assistant Professor in Medicine at Harvard Medical School, the Assistant Medical Director of the Sleep Disorders Service and Program Director for the sleep medicine fellowship program at Brigham and Women’s Hospital in Boston. He is board certified in Internal Medicine, Pulmonary Diseases, Critical Care Medicine and Sleep Medicine. He is a Past President of the American Academy of Sleep Medicine and the Medical Editor of the Harvard Medical School Special Health Report: Improving Sleep.
Syed Moin Hassan, MD
Dr. Hassan is currently a sleep medicine fellow at Brigham and Women’s Hospital and Massachusetts General Hospital, and a research fellow at Harvard Medical School. He is also the recipient of the Academic Sleep Pulmonary Integrated Research/Clinical Fellowship (ASPIRE) from the American Thoracic Society. His research interests include sleep-disordered breathing and pulmonary hypertension.
Kathryn Hatch, MD
Kathryn M. Hatch, MD is the Director of Refractive Surgery at Massachusetts Eye and Ear and the Site Director of Mass. Eye and Ear Waltham. She is an Assistant Professor of Ophthalmology at Harvard Medical School. She is an accomplished surgeon in all-laser refractive surgery techniques including, LASIK and PRK, complex and refractive laser-assisted cataract surgery with intraoperative aberrometry, corneal crosslinking and Intacs (intrastromal corneal ring segments) for keratoconus and post-LASIK ectasia as well as advanced techniques in corneal transplant surgery. Since joining the staff, she has assisted in bringing new technologies to Mass. Eye and Ear including refractive laser-assisted cataract surgery with intraoperative aberrometry, collagen crosslinking, inlays for presbyopia, the Visumax laser (the only laser which performs the small incision lenticule extraction procedure, or SMILE, for the refractive surgical treatment of myopia), and lipiflow for dry eye disease.
Dr. Hatch is considered a key opinion leader in the treatment of keratoconus and has been performing collagen crosslinking since 2011. She was an investigator in phase IV clinical trial in which she was performing minimally invasive crosslinking for greater than 5 years. In 2016, she became the first person at Mass. Eye and Ear to perform crosslinking with the FDA-approved technology and is one of the busiest crosslinking specialists in the US. She is embarking in a research project to assist in developing a screening tool for keratoconus and post-LASIK ectasia.
Additionally, Dr. Hatch has experience in the treatment of ocular surface disease and dry eye, corneal dystrophies and anterior segment reconstruction. She performs cutting-edge corneal transplantation surgery, including both full thickness penetrating keratoplasty and partial thickness transplant surgery, DSAEK (Descemet Stripping Automated Endothelial Keratoplasty), DMEK (Descemets Membrane Endothelial Keratoplasty), and DALK (Deep Anterior Lamellar Keratectomy). She also performs IEK (Intralase Enabled Keratoplasty) and IE-DALK (Intralase Enabled Deep Anterior Lamellar Keratoplasty) and was the first eye surgeon in New England to perform IE-DALK.
Dr. Hatch is an active fellow of the American Academy of Ophthalmology and a diplomat of the American Board of Ophthalmology. She is a member of several organizations including the New England Ophthalmic Society, the Cornea Society, the American Society of Progressive Enterprising Surgeons, the American European College of Ophthalmic Surgeons and the Massachusetts Medical Society. She has been in invited speaker at several regional, national and international meetings. In 2016 and 2017, Dr. Hatch was selected as one of the 300 Premier Innovators in refractive cataract surgery in the United States by Ocular Surgery News.
Maureen Leonard, MD, MMSc
Maureen Leonard, MD, MMSc, is the Clinical Director of the Center For Celiac Research And Treatment at MassGeneral Hospital for Children (MGHfC) and an Assistant Professor of Pediatrics at Harvard Medical School (HMS). She sees adult and pediatric patients with celiac disease, non-celiac gluten sensitivity, and other gluten-related disorders.
Dr. Leonard obtained her medical degree from New York Medical College, completed her residency in general pediatrics at Tufts Medical Center and completed her fellowship in Pediatric Gastroenterology at MGHf C. Dr. Leonard received a Master’s Degree in Clinical and Translational Investigation from HMS.
Dr. Leonard’s research is focused on predicting and preventing celiac disease through the NIH-funded Celiac Disease; Genomic, Environment, Microbiome and Metabolomic Study. Dr. Leonard’s other work include identifying biomarkers that can predict intestinal healing in pediatric patients with celiac disease, building translational models capable of predicting autoimmune disease in high risk individuals, and working with industry collaborators to create and perform clinical trials aimed at treating celiac disease. Dr. Leonard currently holds funding from the NIH (K23DK122127) and has previously been funded by the NIH (F32DK109620), Nutrition Obesity Research Center at Harvard, and the Thrasher Research Foundation.
Julia Marcus, PhD, MPH
Julia Marcus, PhD, MPH, is an epidemiologist and assistant professor at Harvard Medical School and Harvard Pilgrim Health Care Institute, with a primary research focus on pre-exposure prophylaxis for HIV prevention. During COVID-19, she has written about the importance of a harm reduction approach to the prevention of coronavirus transmission, with lessons learned from the HIV epidemic.
Karen Turner, OTR/L
Karen Turner is an advanced practice occupational therapy patient navigator for individuals with autism and intellectual/developmental disorders at Massachusetts General Hospital. In this unique role, she provides care planning and coordination services, as well as individualized OT-based interventions for the patient, their caregiver(s), and their healthcare team. As a result, she reduces barriers to care, optimizes patient safety, improves satisfaction, and increases provider knowledge and comfort in the delivery of health services. Outside of patient encounters, Ms. Turner educates practitioners on caring for individuals with ASD/IDD, and works with departments across the continuum of care to implement systems to make individualized accommodations standard procedure. Ms. Turner received a BS from Boston University’s College of Communication in communication studies, and an MS from Boston University’s Sargent College in occupational therapy.
Melanie Pogach, MD
Melanie Pogach, MD, MMSc, is a critical care and sleep medicine physician, the associate director of the Beth Israel Deaconess Medical Center Sleep Center, and an assistant professor of medicine at Harvard Medical School. She is committed to clinical care, education, innovation, and research as they apply to respiratory and sleep health. Her clinical passion lies in understanding and treating complicated sleep-breathing disorders, circadian dysregulation, and chronic respiratory failure. She has developed a chronic respiratory failure management program, and is conducting clinical research on noninvasive ventilation in patients with advanced COPD.
Vikram Patel, MBBS, PhD
Vikram Patel, MBBS, PhD, is The Pershing Square Professor of Global Health at Harvard Medical School. He was the John Dirks Canada Gairdner Laureate in Global Health in 2019, and was listed in Time magazine’s 100 most influential persons in 2015. To get involved with the GMH@Harvard initiative, write to: GMH_admin@hms.harvard.edu.
Kathryn D. Boger, PhD, ABPP
Anthony Lembo, MD
Anthony Lembo, MD, is Director of the GI Motility and Functional Bowel Disorders Program at Beth Israel Deaconess Medical Center and Professor of Medicine at Harvard Medical School in Boston, MA.
Dr. Lembo earned his medical degree from Tufts University School of Medicine in Boston and completed his residency in medicine, as well as fellowships in gastroenterology and gastrointestinal motility and irritable bowel syndrome (IBS), at the University of California, Los Angeles, (UCLA) Medical Center. Dr. Lembo’s research interests focus on the burden of and treatment options for irritable bowel syndrome (IBS) and chronic constipation, and he also studies the placebo response. He has published widely on these topics, He is also an Associate Editor of the Journal of Clinical Gastroenterology and Digestive Diseases and Science. He also been appointed numerous national and international leadership positions throughout his tenure.
Paul F. Dellaripa, MD
Paul F. Dellaripa is a rheumatologist and internist at the Brigham and Women’s Hospital (BWH). He is an associate professor of medicine at Harvard Medical School. At BWH, he specializes in lung disorders associated with autoimmune diseases. He participates in clinical trials and clinical investigation to better understand and treat these disorders.
Vikram Rangan, MD
Vikram Rangan, MD, is a gastroenterologist at Beth Israel Deaconess Medical Center (BIDMC) and is an Instructor in Medicine at Harvard Medical School. He joined the faculty in 2018, and is part of the irritable bowel syndrome (IBS) and motility team at BIDMC, which specializes in the diagnosis and management of GI motility disorders, as well as clinical research into novel treatment approaches for these conditions. Dr Rangan’s clinical and research interests include acid reflux, disorders of the stomach, and IBS.
Parul Kothari, MD
Parul Kothari, MD, is an Associate Physician of Allergy and Clinical Immunology at Brigham and Women’s Hospital, and an Instructor in Medicine at Harvard Medical School. She completed medical school at New Jersey medical school followed by an Internal Medicine residency at Thomas Jefferson University Hospital and an Allergy and Immunology fellowship at Brigham and Women’s Hospital. Dr. Kothari’s clinical interests include drug allergy, allergies and asthma, and chronic urticaria.
Sara N. Bleich, PhD
Sara N. Bleich is a professor of public health policy at the Harvard T.H. Chan School of Public Health. Sara served as a White House Fellow (2015–2016), where she was a senior policy advisor to the US Department of Agriculture and the first lady’s Let’s Move initiative.
Andrew Oseran, MD, MBA
Andrew Oseran MD, MBA is a clinical cardiology fellow at Massachusetts General Hospital. Dr. Oseran graduated from the University of Pennsylvania with a degree in economics in 2010. He received his MD from Georgetown University School of Medicine as well as a master’s in business administration (MBA) from the McDonough School of Business at Georgetown University. He completed his Internal Medicine Residency at Massachusetts General Hospital in 2019. His research interests include questions related to the delivery of health care and understanding how domestic policy initiatives impact health care outcomes and cost.
Shiv Pillai, PhD, MBBS
Shiv Pillai, PhD, MBBS, is a professor of medicine and health sciences and technology at Harvard Medical School, director of the Harvard immunology PhD and master’s in medical sciences programs, director of MD student research for the Harvard-MIT health sciences and technology program, and program director of an NIH-funded autoimmune center of excellence at Massachusetts General Hospital, based at the Ragon Institute.
Valeria Duque, Au.D., CCC-A
Valeria Duque graduated with her doctor of audiology degree from Northeastern University in 2016. She has been a part of the Beth Israel otolaryngology team since February 2019, working with patients diagnosing hearing loss, fitting hearing aids, and conducting vestibular evaluations.
Shinjita Das, MD
Shinjita Das, MD is a board-certified dermatologist and Instructor in Dermatology at Harvard Medical School. She completed her undergraduate studies at the Massachusetts Institute of Technology with a BS in Biology. Dr. Das returned to her home state of Texas for medical school at the University of Southwestern Medical Center, where she was inducted into the Alpha Omega Alpha Honor Society. After internship in Dallas, she ventured back to Boston for residency at the Harvard Combined Dermatology Residency Training Program, where she served in leadership positions on the Quality Improvement and Program Education committees. She is currently pursuing her Master in Public Health at the Harvard School of Public Health.
In addition to practicing general dermatology, Dr. Das serves as the MGH Department of Dermatology’s inaugural Technology Director. In this capacity, she spear-headed the expansion of the department’s electronic consult (eConsult) service to provide timely outpatient dermatology consultations. She also developed the dermatology eVisit program to allow established patients to have formal check-ins with their dermatologist in-between office visits. As Technology Director, Dr. Das leads and implements operational projects and patient education initiatives using technology-based solutions. Her current research is focused on evaluating ways technology can improve access to high-quality dermatologic care in an efficient manner.
Hyun Jung Kim, MD
Dr. Hyun Jung Kim is a child and adolescent psychiatrist, specializing in transitional-age youth (15 to 25 years old) with serious mental illnesses, such as early psychotic disorders. She is a clinical instructor in psychiatry at Harvard Medical School, and is in charge in the psychotic disorders division at McLean Hospital.
Jeannine Miranne, MD, MS
Jeannine M. Miranne, MD, MS is a Urogynecologist at Brigham and Women’s Hospital and an Assistant Professor of Obstetrics, Gynecology, and Reproductive Biology at Harvard Medical School. She also serves as the Course Director for the Harvard Medical School Urogynecology Advanced Elective at Brigham and Women’s Hospital. She sees patients at both Brigham and Women’s main campus and in Braintree, MA and operates at Brigham and Women’s Hospital, Brigham and Women’s Faulkner Hospital, and South Shore Hospital. Her clinical interests include urinary incontinence, recurrent UTI, and pelvic organ prolapse.