Harvard Health Experts and Contributors

Markos Kalligeros, MD

Contributor

Dr. Markos Kalligeros is a gastroenterology fellow at Harvard-affiliated Beth Israel Deaconess Medical Center (BIDMC). His research interests include MASLD/MASH, cardiometabolic risk factors in chronic liver disease, advanced fibrosis and cirrhosis, noninvasive fibrosis assessment, and prevention of hepatic decompensation and liver-related mortality. He received his medical degree from the National and Kapodistrian University of Athens, Greece. He served as resident and chief resident in internal medicine at Brown University, followed by a fellowship in gastroenterology and hepatology at BIDMC.

Alison Kane, RDN, LDN

Contributor

Alison Kane is a registered dietitian and wellness program manager with Massachusetts General Hospital’s concierge medicine and executive health practices. She holds a bachelor of nutritional science from Cornell University and completed her dietetic internship at Brigham and Women’s Hospital. Alison takes a compassionate, individualized approach to nutrition counseling, focusing on sustainable lifestyle changes, chronic disease prevention, and helping individuals develop a healthier relationship with food.

Michaela Kane

Contributor

Michaela Kane is an intern with Harvard Health Publishing. Prior to working at Harvard, she was a writing intern at the Brigham and Women’s Hospital Communication and Public Affairs office. Michaela received her B.A. from the University of Arizona where she studied journalism and neuroscience, and she recently earned her master’s degree in science journalism from Boston University.

Tsuyoshi Kaneko, MD

Contributor

Tsuyoshi Kaneko, MD, is a cardiac surgeon at Brigham and Women’s Hospital (BWH) and an assistant professor of surgery at Harvard Medical School. Dr. Kaneko received his medical degree from Keio University School of Medicine in Tokyo. He then completed three residency programs: one at Keio University, another in surgery at The University of Texas Health Science Center at Houston and the third in cardiothoracic surgery residency at BWH. He also completed a cardiothoracic surgery fellowship at BWH. He is board certified in general surgery. He specializes in endovascular approaches in cardiac surgery, including transcatheter aortic valve replacements—a catheter-based, minimally invasive surgical procedure for high-risk patients diagnosed with severe aortic stenosis—and thoracic endovascular aortic aneurysm repairs for thoracic aortic aneurysms. Dr. Kaneko also specializes in open aortic surgery and minimally invasive valve surgeries utilizing smaller incisions. His research focuses on the clinical outcomes of aortic and valvular disease.

Sunil Kapur, MD

Contributor

Dr. Sunil Kapur is an assistant professor of medicine at Harvard Medical School, and a staff cardiologist/cardiac electrophysiologist at Brigham and Women’s Hospital (BWH) in Boston. He completed his undergraduate degree in biomedical engineering and his medical doctorate at Northwestern University, and his postgraduate training in internal medicine, cardiovascular medicine, and clinical cardiac electrophysiology at BWH. Dr. Kapur's research interests include clinical innovation in invasive electrophysiology and the genetics of atrial arrhythmias.

Martin Kathrins, MD

Contributor

Dr. Martin Kathrins is an associate surgeon at Brigham and Women’s Hospital and assistant professor of surgery at Harvard Medical School. He is director of the men’s health center in the Brigham and Women’s department of urology. Dr. Kathrins received his undergraduate degree from the University of Pennsylvania. He received his medical degree from Columbia University College of Physicians and Surgeons, and completed his urology residency at the University of Pennsylvania. He subsequently completed a fellowship in male infertility, andrology, and microsurgery at the University of Illinois at Chicago. He is board certified in urology. Dr. Kathrins’ clinical interests include male infertility, hypogonadism, sexual dysfunction, and voiding dysfunction. Dr. Kathrins’ research focuses include severe male factor infertility and genitourinary cancer survivorship.

Jeffrey Katz, MD, MS

Contributor

Jeffrey N. Katz, MD, MS, graduated from Princeton University in 1980, attended Yale Medical School, and completed a medical residency at Yale-New Haven Hospital and a rheumatology fellowship at Brigham and Women’s Hospital (BWH). He received an MS in 1990 from Harvard T.H. Chan School of Public Health. Dr. Katz is professor of medicine and orthopaedic surgery at Harvard Medical School, and professor of epidemiology at Harvard T.H. Chan. He holds the Clement B. Sledge and Thomas S. Thornhill Distinguished Chair in Orthopedic Surgery at BWH. Dr. Katz is director of research in the department of orthopedic surgery at BWH, and director of the Office of Scholarly Engagement at HMS. Dr. Katz has focused his research on outcomes of musculoskeletal disorders, including carpal tunnel syndrome, lumbar spinal stenosis, osteoarthritis, meniscal tear, and interventions for these conditions including physical therapy, knee arthroscopy, and joint replacement. He is principal investigator of two NIH-funded multicenter trials of therapies for patients with meniscal tear and osteoarthritis. Dr. Katz is deputy editor for methodology of the Journal of Bone and Joint Surgery, and associate editor of Osteoarthritis and Cartilage.

Sabra L. Katz-Wise, PhD

Contributor

Sabra L. Katz-Wise, PhD (she/her) is an assistant professor in adolescent/young adult medicine at Boston Children’s Hospital, in pediatrics at Harvard Medical School, and in social and behavioral sciences at the Harvard T.H. Chan School of Public Health. She co-directs the Harvard SOGIE (Sexual Orientation and Gender Identity and Expression) Health Equity Research Collaborative. Her research investigates sexual orientation and gender identity development, sexual fluidity, health inequities related to sexual orientation and gender identity, and psychosocial functioning in families with transgender youth. Dr. Katz-Wise also advocates to improve workplace climate, medical education, and patient care for LGBTQ individuals, as co-chair for the BCH Rainbow Consortium on Sexual and Gender Diversity, as an HMS LGBT Advisory Committee member, and as HMS Sexual and Gender Minority Curriculum Development Fellow.

Maneet Kaur, MD

Contributor

Maneet Kaur, M.D. is Associate Chief for the department of rheumatology at VA Boston Health Care System. Double board certified in internal medicine and rheumatology, she is an appointed lecturer at Harvard Medical School. In addition to practicing general adult rheumatology, she is certified in bone densitometry from International Society of Clinical Densitometry (ISCD). Dr. Kaur is passionate about educating and informing the patients she cares for and believes strongly in helping the larger community understand specific illnesses and treatment options as well as how to take an active role in one’s health care.

Dhruv Kazi, MD, MSc, MS

Contributor

Dr. Dhruv S. Kazi is a cardiologist and health economist. He is associate professor of medicine at Harvard Medical School, associate professor of epidemiology at the Harvard T.H. Chan School of Public Health, associate director of the Smith Center for Outcomes Research, and director of the cardiac critical care unit at Beth Israel Deaconess Medical Center. He completed clinical training at the University of Mumbai, Baylor College of Medicine, and the University of California, San Diego, with graduate training at the London School of Economics and Stanford. His research evaluates the benefit, affordability, and uptake of high-value cardiovascular and weight management therapies.

Nancy Keating, M.D., M.P.H.

Contributor

Nancy L. Keating, M.D., M.P.H., is a professor of health care policy and medicine at Harvard Medical School, and a physician at Brigham and Women’s Hospital. Dr. Keating’s research examines provider, patient, and health system factors that influence the delivery of high-quality care for individuals with cancer.

Alyson Kelley-Hedgepeth, MD

Contributor

Dr. Alyson Kelley-Hedgepeth is a full-time cardiologist and co-director of the women’s program at Lown Cardiovascular Group. She has extensive experience in managing coronary artery disease, heart failure, and arrhythmias. Dr. Kelley-Hedgepeth is committed to providing personalized cardiovascular care with an emphasis on early disease detection and prevention. She specializes in cardiac lifestyle assessment and women’s cardiovascular disease. Her passion is preventive cardiovascular health and identifying how simple lifestyle changes promote healing and wellness. She trained in internal medicine at Massachusetts General Hospital, and completed a fellowship in cardiology at Tufts Medical Center. Dr. Kelley-Hedgepeth is board certified in cardiovascular disease and nuclear cardiology. She is also a diplomate of the American Board of Internal Medicine and board eligible in echocardiography.

John F. Kelly, PhD

Contributor

Dr. John F. Kelly is the Elizabeth R. Spallin Professor of Psychiatry in Addiction Medicine at Harvard Medical School — the first endowed professor in addiction medicine at Harvard. He is also the founder and director of the Recovery Research Institute at the Massachusetts General Hospital (MGH), and the associate director of the Center for Addiction Medicine at MGH. Dr. Kelly is a former president of the American Psychological Association’s (APA) Society of Addiction Psychology, a founding member and inaugural president of the American Board of Addiction Psychology, a Fellow of the APA, and a Diplomate of the American Board of Professional Psychology. He has served as a consultant to U.S. federal agencies and non-federal institutions, as well as foreign governments, the United Nations, and the World Health Organization. Dr. Kelly has published over 200 peer-reviewed articles, reviews, chapters, and books in the field of addiction medicine, and was an author on the U.S. Surgeon General’s Report on Alcohol, Drugs, and Health. He has won numerous state, national, and international lifetime achievements and distinguished scientist awards for his work. His clinical and research endeavors have focused on addiction treatment and the recovery process, mechanisms of behavior change, and reducing stigma and discrimination among individuals suffering from addiction.

Sat Bir Singh Khalsa, Ph.D

Contributor

Sat Bir Singh Khalsa, Ph.D. is director of research for the Kundalini Research Institute, research associate at the Benson Henry Institute for Mind Body Medicine, research affiliate at the Osher Center for Integrative Medicine, and an associate professor of medicine at Harvard Medical School and Brigham and Women’s Hospital in Boston. He has conducted research on yoga since 2001, has been a practitioner of Kundalini Yoga since 1971, and is a certified teacher. His research has evaluated yoga for insomnia, stress, trauma, and anxiety, and for workplace and public school settings. He works with the International Association of Yoga Therapists as scientific director for the annual Symposium on Yoga Research, and is editor in chief of the International Journal of Yoga Therapy. He is medical editor of the Harvard Medical School Special Report Introduction to Yoga, and chief editor of the medical textbook The Principles and Practice of Yoga in Health Care.

Shaan S. Khurshid, MD, MPH

Contributor

Dr. Shaan S. Khurshid is an assistant professor of medicine at Harvard Medical School and an assistant in medicine in the Telemachus and Irene Demoulas Family Foundation Center for Cardiac Arrhythmias at Massachusetts General Hospital (MGH). His research focuses on novel methods to estimate risk and improve outcomes in cardiac rhythm disorders. His clinical interests include therapies for atrial fibrillation and other arrythmias, as well as device-based therapies for pacing and defibrillation. Dr. Khurshid earned his medical degree from the University of Pennsylvania and obtained a master of public health from Harvard T.H. Chan School of Public Health. He completed an internal medicine residency, cardiology fellowship, and clinical electrophysiology fellowship at MGH.

Adam Kibel, MD, MHCM

Editorial Advisory Board Member, Harvard Health Publishing

Adam Kibel, MD, MHCM, is the chief of urology at Brigham and Women’s Hospital and the Dana-Farber Cancer Institute, and the Elliott Carr Cutler Professor of Surgery at Harvard Medical School. He received his BA and MD from Cornell University in 1987 and 1991 respectively. He then completed his residency at the Harvard Program in Urology (Longwood) in 1997, and a fellowship in urologic oncology at Johns Hopkins in 1999. In 2022, he received a master’s in health care management from Harvard University. His practice focuses on minimally invasive approaches to urologic cancers. He has over 400 peer-reviewed publications, and has received grant support from multiple agencies, including the National Cancer Institute, the American Urologic Association, the American College of Surgeons, and the Department of Defense. The focus of his research is on identification and treatment of patients with aggressive genitourinary cancers though neoadjuvant therapy, improved imaging, and novel biomarkers.

Laura Kiesel

Contributor

Laura Kiesel is Boston-area freelance writer whose articles and essays have appeared in The Guardian, Salon, Washington Post, The Fix, Vice, Al-Jazeera, The Atlantic, and many others. She is currently completing a collection of personal essays.

Hyun Jung Kim, MD

Contributor

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.

Leo Kim, MD, PhD

Contributor

Leo Kim, MD, PhD, is a retina surgeon and a full time member of the Retina Service at the Massachusetts Eye and Ear Infirmary who has extensive experience in the management of retinal diseases associated with neovascularization or angiogenesis. These include diseases such as retinal vein occlusions, diabetic retinopathy, and age-related macular degeneration. After obtaining his MD/PhD from the Medical Scientist Training Program at Yale University School of Medicine, Dr. Kim attended University of Southern California/Doheny Eye Institute for his ophthalmology residency, where he was recognized with the Doheny Resident Research Award for two consecutive years. He also was awarded the Lillian and Henry Nesburn Award for Research Excellence and was chosen to participate in the 2008 Heed Ophthalmic Foundation Residents Retreat, an honor extended to only the top residents in the United States demonstrating exceptional potential in academic ophthalmology. Following residency, Dr. Kim continued at Doheny Eye Institute as a vitreoretinal surgery fellow and was recognized by the Heed Foundation with a highly prestigious fellowship grant.

Davis Kimaiyo, MD

Contributor

Davis Kimaiyo, MD, is an Internal Medicine resident at Massachusetts General Hospital. He completed his medical degree at the University of California Los Angeles David Geffen School of Medicine. Dr. Kimaiyo’s research interests include cardiovascular medicine, particularly preventative cardiology, heart failure, and clinical trials.

George King, MD

Contributor

Dr. George L. King is the Senior Vice President, Chief Scientific Officer at Joslin Diabetes Center, as well as a professor of medicine and ophthalmology at Harvard Medical School. He received his medical degree from Duke University School of Medicine and did his residency at the University of Washington Affiliated Hospitals in Seattle and the National Institutes of Health. Dr. King has published over 300 papers and multiple books. Dr. King’s work focuses on finding the causes of diabetic complications. He is the founder of The Medalist Study to discover new treatments for diabetic complications and understanding the reasons for the high rate of diabetes in Asian Americans. His laboratory discovered that VEGF, the protein most responsible for causing the severe form of diabetic eye disease. Dr. King has received numerous awards: the Cogan Award from the Association for Research in Vision and Ophthalmology; the Alcon Award for Vision Research; the Harold Amos Diversity Award from Harvard Medical School; the Chinese American Medical Society Scientific Award; the 2015 Edwin Bierman Award from the American Diabetes Association, with several others; the Champalimaud Award for Vision, the largest award in the vision research field; and the Mary Tyler Moore and Robert Levine Award from the JDRF 2016.

Louise King, MD, JD

Contributor

Dr. Louise P. King is an assistant professor of obstetrics, gynecology, and reproductive biology at Harvard Medical School, and a surgeon within the division of minimally invasive gynecologic surgery at Brigham and Women's Hospital. She is the program director for the fellowship in her surgical discipline and the director of research in her division. She is the associate director of ethics at her hospital, and the director of reproductive bioethics at the medical school's Center for Bioethics. She trained in obstetrics and gynecology at Parkland Hospital in Dallas, TX, and in minimally invasive surgery at Stanford University.

Daniel Kirshenbaum, MD

Contributor

Daniel Kirshenbaum, MD, is a general cardiologist at the Massachusetts General Hospital and Instructor in Medicine at Harvard Medical School. He completed his internal medicine residency at Boston Medical Center (BMC), also serving as Chief Medical Resident, where he then went on to also complete his clinical cardiology fellowship. He has academic interests in digital health, as well as the use of technology to enhance medical education.

Sarah Klein

Health Writer

Sarah Klein is a Boston-based health journalist with more than 15 years of experience in lifestyle media. Most recently, she was editor in chief and senior director of content at LIVESTRONG.com. She previously held positions at Health.com, Prevention, and HuffPost. She's worked as a freelancer with a range of publications and clients, including TIME Health, SELF.com, Peloton, Everyday Health, Exos, Stride, and Felix Creative. Sarah is a graduate of the Arthur L. Carter Journalism Institute at New York University, a National Academy of Sports Medicine–certified personal trainer, and a member of the Association of Health Care Journalists. She completed the National Press Foundation 2020 Vaccine Boot Camp and the 2019 Mayo Clinic Journalist Residency.

Lauren Ko, MD, MEd

Contributor

Lauren Ko, MD, M.Ed, is a dermatology resident physician at the Harvard Combined Dermatology Program. She received her undergraduate education at Columbia University, and thereafter received her Masters in Education in New York City where she taught elementary school for four years. She received her medical degree from Harvard Medical School. Her clinical and research interests include inpatient and complex medical dermatology, medical education, and cutaneous manifestations of systemic disease.

Harvard Health Experts and Contributors

List of Experts

Markos Kalligeros, MD

Alison Kane, RDN, LDN

Michaela Kane

Tsuyoshi Kaneko, MD

Sunil Kapur, MD

Martin Kathrins, MD

Jeffrey Katz, MD, MS

Sabra L. Katz-Wise, PhD

Maneet Kaur, MD

Dhruv Kazi, MD, MSc, MS

Nancy Keating, M.D., M.P.H.

Alyson Kelley-Hedgepeth, MD

John F. Kelly, PhD

Sat Bir Singh Khalsa, Ph.D

Shaan S. Khurshid, MD, MPH

Adam Kibel, MD, MHCM

Laura Kiesel

Hyun Jung Kim, MD

Leo Kim, MD, PhD

Davis Kimaiyo, MD

George King, MD

Louise King, MD, JD

Daniel Kirshenbaum, MD

Sarah Klein

Lauren Ko, MD, MEd