Harvard Health Experts and Contributors

List of Experts

photo of Melanie Pogach, MD

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.
Read more about Melanie Pogach, MD
photo of Rani Polak, MD, Chef, MBA

Rani Polak, MD, Chef, MBA


Dr. Rani Polak is the founding director of both the Culinary Healthcare Education Fundamentals (CHEF) Coaching program at the Institute of Lifestyle Medicine, Spaulding Rehabilitation Hospital, and the Center of Lifestyle Medicine at Sheba Medical Center, Tel Aviv, Israel; as well as a Research Associate at the Department of PM & R, Harvard Medical School. Prior to this position he completed a Research Fellowship in Lifestyle Medicine at Joslin Diabetes Center, Harvard Medical School, and a residency in Family Medicine at the Hebrew University Medical School, Jerusalem, Israel. Rani had the good fortune to be the founder of the Hadassah Healthy Cooking and Lifestyle Center and the Israeli Society of Lifestyle Medicine. His first lifestyle intervention won the Hebrew University’s Kaye Award Prize for innovation and his book, Delicious Diabetic Recipes, is a gold best seller. Dr. Polak’s focus, along with clinical care, is on nutrition education, and on clinical and translational research relating to culinary medicine and medical education. His current work is concentrated on the Culinary Coaching approach, which aims to improve nutrition through culinary training combined with health coaching principles. This approach was used through: 1) Patients CHEF Coaching telemedicine program, aimed at improving eating behavior of patients with cardio-metabolic risk factors. This was implemented at HomeBase, Massachusetts General Hospital, Harvard Medical School, and at dozens of practices nationwide, and 2) Clinician CHEF Coaching tele-training program, aimed at training clinicians in how to provide effective Culinary Healthcare Education. This was implemented in the Yale Preventive Medicine/Internal Medicine residency program, Spaulding Rehabilitation Hospital, and was recently approved by Harvard Medical School for Continuing Medical Education credits. Dr. Polak’s work has been featured in many media outlets including Scientific American, Herald Tribute, Jerusalem Post, and USA Today.
Read more about Rani Polak, MD, Chef, MBA
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Heather Potts, PhD


Heather Potts, PhD, is a licensed psychologist who earned her doctorate in school psychology at Syracuse University. She completed her internship at Southern Illinois University (SIU) School of Medicine's department of pediatrics and at Springfield Public Schools, and her postdoctoral fellowship at SIU. Prior to her graduate studies, she earned a master’s degree in rehabilitation counseling from The George Washington University, and provided counseling and transition services to high school students with disabilities. She joined the outpatient psychiatry services team at Boston Children's Hospital in January 2020 to deliver clinical psychological services and specialty care for children and adolescents with ADHD.
Read more about Heather Potts, PhD
photo of Anthony Prince, MD

Anthony Prince, MD


Dr. Anthony Prince is an associate surgeon in the division of otolaryngology at Brigham and Women’s Hospital in Boston, and serves as an instructor in the department of otolaryngology–head and neck surgery at Harvard Medical School. He completed residency training in the department of otolaryngology–head and neck at Mount Sinai Hospital in New York City. His clinical practice focuses on the surgical management of obstructive sleep apnea, sino-nasal disorders, as well as head and neck surgical pathology. He currently leads a multidisciplinary program focusing on nerve stimulation as treatment for moderate to severe obstructive sleep apnea in people not successful with other therapies.
Read more about Anthony Prince, MD
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Mark Proctor, MD

Contributing Editor

Mark Proctor, M.D. is the Director of the Brain Injury Center and Interim Neurosurgeon in Chief at Boston Children’s Hospital. He is past-Chairman of the Board of the Thinkfirst National Injury Prevention Foundation, and continues to serves on the Board. He has major clinical interest in brain and spine injury, congenital spinal disorders and craniofacial malformations. He is Chairman-elect of the Pediatric Section of the American Association of Neurological Surgeons, and incoming President of the New England Neurosurgical Society.
Read more about Mark Proctor, MD
photo of Stuart Quan, MD

Stuart Quan, MD

Contributing Editor

Dr. Quan is a graduate of the University of California, San Francisco School of Medicine. He did residency training in Internal Medicine at the University of Wisconsin, and fellowships in Critical Care Medicine and Pulmonary Medicine at the University of California, San Francisco and University of Arizona respectively. He moved to Havard Medical School and Brigham and Women’s Hospital in 2007 where he currently is the Gerald E. McGinnis Professor of Sleep Medicine at Harvard Medical School and Senior Physician at Brigham and Women’s Hospital. In addition, he is Professor Emeritus of Medicine at the University of Arizona where he was Chief of Pulmonary and Critical Care Medicine, Associate Head of the Department of Medicine, Program Director of the GCRC and Director of the Sleep Disorders Center. He was the founding editor-in-chief of the Journal of Clinical Sleep Medicine (2004-2014) and is the initial recipient of an award for editorial excellence named in his honor. Dr. Quan also has served as the president of the American Academy of Sleep Medicine (1999-2000), been on the board of directors of the American Board of Sleep Medicine (1990-1996). a member of the Residency Review Committee for Internal Medicine of the Accreditation Council for Graduate Medical Education; and chair of the Sleep Medicine examination committee for the American Board of Internal Medicine. Recently, he was a member of the Steering Committee that developed the new sleep scoring manual for the American Academy of Sleep Medicine and is currently the Editor of the Sleep and Health Education Program at Harvard Medical School’s Division of Sleep Medicine, Associate Editor of the Southwest Journal of Pulmonary and Critical Care and Deputy Editor of Sleep. He also is the Clinical Director of the Division of Sleep and Circadian Disorders at Brigham and Women’s Hospital. He is the recipient of the Nathaniel Kleitman Distinguished Service and William C. Dement Academic Achievement Awards, both conferred by the American Academy of Sleep Medicine. Dr. Quan’s current research activities focus on the epidemiology of sleep and sleep disorders, particularly sleep disordered breathing.
Read more about Stuart Quan, MD
photo of Loren Rabinowitz, MD

Loren Rabinowitz, MD


Dr. Loren Rabinowitz is an instructor in medicine Beth Israel Deaconess Medical Center and Harvard Medical School, and an attending physician in the Inflammatory Bowel Disease Center at BIDMC. Her clinical research is focused on the intersection of inflammatory bowel diseases (IBD) and women’s health. She is passionate about achieving gender equity in medicine and gastroenterology, and has led multicenter national studies on gender dynamics in medical education, mentorship, and parental leave policies. Her work has been published in the New England Journal of Medicine, Lancet GI & Hepatology, Academic Medicine, American Journal of Gastroenterology, Gastroenterology, and Gastrointestinal Endoscopy, among others.
Read more about Loren Rabinowitz, MD
photo of David Ramsey, MD, PhD, MPH

David Ramsey, MD, PhD, MPH


David J. Ramsey, MD, PhD, MPH, is currently the Director of Ophthalmic Research at the Lahey Hospital & Medical Center, a part of Beth Israel Lahey Health. As a specialist in retinal disease, he performs surgery and sees patients in Peabody and Burlington, MA. Dr. Ramsey received his M.D. and Ph.D. degrees from the University of Illinois at Chicago College of Medicine in 2008. He completed his residency in Ophthalmology at the Wilmer Eye Institute of the Johns Hopkins School of Medicine (2009-2012) and afterwards a combined medical/surgical fellowship in vitreoretinal diseases at the Massachusetts Eye and Ear Infirmary (2012-2014). His research focuses on the prevention and detection of retinal diseases such as diabetes, macular degeneration, and glaucoma.
Read more about David Ramsey, MD, PhD, MPH
photo of Vikram Rangan, MD

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.
Read more about Vikram Rangan, MD
photo of John J. Ratey, MD

John J. Ratey, MD


John J. Ratey MD, is an associate clinical professor of Psychiatry at Harvard Medical School and an internationally recognized expert in Neuropsychiatry. He has published over 60 peer reviewed articles and 11 books, including the groundbreaking ADHD “Driven to Distraction” series, and “Spark, The Revolutionary New Science of Exercise and the Brain.” Honored by the Massachusetts Psychiatric Society for Advancing the Profession, Ratey lectures around the world in additional to maintaining a private practice in Cambridge, Massachusetts and Los Angeles, California. He enjoys running, weight training and hiking with his wife. Web site: Johnratey.com Facebook: https://www.facebook.com/JohnRateyMD/ Twitter: @jratey
Read more about John J. Ratey, MD
photo of Niyoti Reddy, MD

Niyoti Reddy, MD


Dr. Niyoti Reddy is currently an advanced fellow of obesity medicine at Massachusetts General Hospital/Harvard Medical School. She is a board-certified internist and has completed a fellowship in endocrinology and diabetes. She is also pursuing a fellowship in contemplative medicine, an innovative 12-month program to cultivate leaders committed to addressing challenges in the healthcare system. The core training is based on the teachings of the historical Buddha. Dr. Reddy has been practicing yoga and meditation for several years, and has chosen to be an obesity medicine specialist because it is the most impactful way for her to help people.
Read more about Niyoti Reddy, MD
photo of Emily Reiff, MD

Emily Reiff, MD


Dr. Emily Reiff is a maternal fetal medicine physician at Brigham and Women’s Hospital (BWH), specializing in high-risk obstetrics, and a clinical instructor at Harvard Medical School. Dr. Reiff completed a residency in obstetrics and gynecology at BWH and Massachusetts General Hospital, and a fellowship in maternal fetal medicine at Duke University. She currently sees pregnant patients in the maternal fetal medicine offices at BWH in Boston and Foxboro, and performs consultations in the Center for Fetal Medicine. Academically, she is interested in care redesign through quality improvement initiatives. She lives in Wellesley with her husband and daughter.
Read more about Emily Reiff, MD
photo of William Renthal, MD, PhD

William Renthal, MD, PhD


William Renthal, MD, PhD, is the director of molecular genetics at the John R. Graham Headache Center. Dr. Renthal completed his MD, PhD and neurology residency at the University of Texas Southwestern Medical Center, and joined Brigham and Women’s Hospital for his final year of residency and postgraduate training in headache medicine.   He is board certified in neurology and provides patients with comprehensive headache care including advanced diagnostics and personalized treatment plans, which may include behavioral/complementary therapy, medication and/or procedures (e.g. nerve blocks, Botox).   In addition to clinical care, Dr. Renthal conducts neuroscience and genetics research at Harvard Medical School where he is interested in the genetic and epigenetic mechanisms underlying migraine. He has published over 30 peer-reviewed articles and book chapters on his research.  
Read more about William Renthal, MD, PhD
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Jenette Restivo

Health Writer; Assistant Director for Digital Content Creation and Engagement, Harvard Health Publishing

Jenette Restivo is a Health Content Writer at Harvard Health Publishing. Jenette is a media professional with a 20-year-career creating strategic content for broadcast, nonprofits, and websites. Jenette started her career in health editing at About.com. She reported for the medical unit of ABC News, and then became a producer/writer of health, science and other documentaries for television channels such as PBS, the Discovery Channel, and National Geographic. Jenette has also led communications efforts for a healthcare nonprofit called Primary Care Progress, as well as headed up content strategy for the Children and Nature Network.
Read more about Jenette Restivo
photo of Kathryn Rexrode, MD, MPH

Kathryn Rexrode, MD, MPH


Dr. Kathryn Rexrode is the Chief of the Division of Women’s Health in the Department of Medicine at Brigham and Women’s Hospital (BWH) and an Associate Professor of Medicine at Harvard Medical School. Dr. Rexrode has broad and deep research experience in women’s health, with particular expertise in cardiovascular disease in women. She leads multiple grants from the National institute of Health and is the author of more than 250 research publications. Dr. Rexrode also leads the Office of Women’s Careers in the Center for Diversity and Inclusion at BWH where she works to advance gender equity, diversity and inclusion. Dr. Rexrode practices as primary care physician at the Gretchen and Edward Fish Center for Women’s Health at BWH. 
Read more about Kathryn Rexrode, MD, MPH
photo of Kathryn Rexrode, MD, MPH

Kathryn Rexrode, MD, MPH


Dr. Kathryn Rexrode is the Chief of the Division of Women’s Health in the Department of Medicine at Brigham and Women’s Hospital (BWH) and an Associate Professor of Medicine at Harvard Medical School. Dr. Rexrode has broad and deep research experience in women’s health, with particular expertise in cardiovascular disease in women. She leads multiple grants from the National institute of Health and is the author of more than 250 research publications. Dr. Rexrode also leads the Office of Women’s Careers in the Center for Diversity and Inclusion at BWH where she works to advance gender equity, diversity and inclusion. Dr. Rexrode practices as primary care physician at the Gretchen and Edward Fish Center for Women’s Health at BWH. 
Read more about Kathryn Rexrode, MD, MPH
photo of Hope Ricciotti, MD

Hope Ricciotti, MD

Editor at Large, Harvard Women's Health Watch

Dr. Hope A. Ricciotti is Editor at Large of Harvard Women’s Health Watch. She is an associate professor of obstetrics, gynecology, and reproductive biology at Harvard Medical School, and leads the department of obstetrics, gynecology, and reproductive biology at Beth Israel Deaconess Medical Center.
Read more about Hope Ricciotti, MD
photo of Shauna Rice, BS

Shauna Rice, BS


Shauna Rice, BS, is a clinical research fellow in Dermatology at Massachusetts General Hospital and Harvard Medical School. She is also an MD candidate at the University of Massachusetts Medical School and will be graduating in 2022.
Read more about Shauna Rice, BS
photo of James Richter, MD

James Richter, MD


James Michael Richter, MD, is a Physician at the Massachusetts General Hospital and Associate Professor of Medicine, Harvard Medical School in Boston, Massachusetts. He received his undergraduate degree from The University of Texas at Austin and Medical and Masters Degree from the University of Texas, Southwestern Medical School. He completed a residency in Internal Medicine and later a clinical and research fellowship in gastroenterology at the Massachusetts General Hospital and Harvard Medical School. He is a fellow of the American College of Physicians. Dr. Richter practices consultative and endoscopic gastroenterology. Dr. Richter has an established interest in healthcare systems development and quality management, infectious, and inflammatory enteric diseases. He served as a Trustee of the Partners Community Healthcare; the community network that is a part of the Partners HealthCare System and Trustee of the Massachusetts General Hospital. He was Medical Director of the Massachusetts General Physicians Corporation and its successor, the Massachusetts General Physicians Organization between 1992 and 2002. There he chaired the Managed Care, Medical Management, Medical Policy Committees and Clinical Performance Management Task Force. He was Chief Medical Officer of the Caritas Christi Health Care System from 2002 through 2004. Dr. Richter served as a member of the Baldrige National Quality Award Board of Examiners and the Massachusetts Medical Society Information Technology and Quality of Care Committees. He is recently the chair of the Society for General Internal Medicine National Clinical Practice Committee which is responsible for quality of care, practice management, and applications of clinical information technology. He currently serves on the advisory committee to CMS developing the criteria for episodes of care for MIPS and MACRA. He continues to have an active leadership role in medical management, safety and quality of care improvement at the Massachusetts General Hospital. His research interests include the effectiveness of care of the adult patient with digestive disease, screening for colorectal cancer, quality management in healthcare and healthcare systems development and improvement. He has contributed over 180 original papers and chapters to the medical literature.
Read more about James Richter, MD
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Eric Rimm, ScD

Editorial Advisory Board Member, Harvard Health Publishing

Eric Rimm, ScD, is professor of epidemiology and nutrition, director of the program in cardiovascular epidemiology at the Harvard T.H. Chan School of Public Health, and professor of medicine at the Harvard Medical School. He is internationally recognized for his extensive work in the study of the health effects of moderate alcohol consumption, whole grains, micronutrients, and polyphenols. He also studies the impact of local and national nutrition policy as it relates to the improvement of diets of school children, the one in eight Americans on the Supplemental Nutrition Assistance Program (SNAP), and other federal nutrition assistance programs. He served on the National Academy of Sciences’ food policy advisory committee for the USDA’s Economic Research Service, and previously served on the scientific advisory committee for the 2010 US Dietary Guidelines for Americans. He is also a nutritional advisor to the Boston Red Sox and the Liverpool Football Club in the English Premier League. He has published more than 800 peer-reviewed publications during his 28 years on the faculty at Harvard. Eric has received several awards for his work, including the American Society for Nutrition Innovation Award.
Read more about Eric Rimm, ScD
photo of Eve Rittenberg, MD

Eve Rittenberg, MD


Eve Rittenberg, MD, is assistant professor of medicine at Harvard Medical School and a primary care internist at the Fish Center for Women’s Health at Brigham and Women’s Hospital. Her interests include women’s health, trauma-informed care, and health equity. She is a 2018–2021 Robert Wood Johnson Foundation Clinical Scholars fellow, working with an interdisciplinary team on trauma-informed care. She is the past medical director of primary care at the Fish Center, and is actively engaged in medical student education in women’s health.
Read more about Eve Rittenberg, MD
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Paul Rizzoli, MD

Contributor; Editorial Advisory Board Member, Harvard Health Publishing

Dr. Paul Rizzoli is board-certified in internal medicine, neurology, and headache medicine. He is the clinical director of the Graham Headache Center at Brigham and Women’s/Faulkner Hospital in Boston. Begun in 1999 and affiliated with Harvard Medical School, it is one of the largest UCNS-accredited training programs in headache medicine in the United States. This academic headache center, located on the Faulkner Hospital campus, has as its mission to re-establish the Faulkner’s longstanding reputation for excellence in headache care, and to carry on the legacy of Dr. John Graham, an early headache pioneer. The center is known for excellence in headache management, research, and for clinical training in headache medicine.
Read more about Paul Rizzoli, MD
photo of Celeste Robb-Nicholson, MD

Celeste Robb-Nicholson, MD


Celeste Robb-Nicholson, M.D., is an Associate Professor of Medicine at Harvard Medical School, Physician and Associate Chief of the General Internal Medicine Unit at Massachusetts General Hospital, and founding Editor-in-Chief of the Harvard Women's Health Watch. She also serves as the Medical Director of Primary Care Office InSite, a web site for general internists and their patients. In this role, she is responsible for the development of guidelines for primary care clinicians and health information for their patients. Dr. Robb-Nicholson received her undergraduate degree from Radcliffe College, her medical degree from Duke University, and her master's in public health in maternal and child health from the University of North Carolina at Chapel Hill. She is board certified in Internal Medicine. She maintains an active medical practice as a Primary Care Physician at Massachusetts General Hospital. 
Read more about Celeste Robb-Nicholson, MD
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Laura K. Rock, MD


Dr. Laura K. Rock is a pulmonologist and critical care physician at Beth Israel Deaconess Medical Center in Boston, and an assistant professor at Harvard Medical School. She is also faculty for the Center for Medical Simulation, and a VitalTalk instructor. She runs communication training programs and conducts research on debriefing as it relates to teamwork and patient safety. These include programs for effective and empathic communication between clinicians and patients or family members; work culture and how it affects teamwork, the patient experience, and clinician well-being; managing conflict at the bedside; and providing feedback that improves performance.
Read more about Laura K. Rock, MD
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Dennis Rosen, MD

Assistant Professor of Pediatrics, Harvard Medical School

Dennis Rosen, M.D. is a pediatric pulmonologist and sleep specialist at at Boston Children’s Hospital, where he is the associate medical director of the Center for Pediatric Sleep Disorders. He is also an assistant professor of pediatrics at Harvard Medical School. Dr. Rosen is author of Successful Sleep Strategies for Kids (Harvard Medical School Guide) and Vital Conversations: Improving Communication Between Doctors and Patients
Read more about Dennis Rosen, MD
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