Our Fellows
Year One
Maxim Barnett
Hometown: Vancouver, Canada
Medical School: University of Buckingham, United Kingdom
Residency: Albert Einstein Medical Center, Philadelphia
Clinical Interests: Metabolic bone disease, insulin pump technology, thyroid eye disease and “medical zebras”
I grew up in Vancouver, Canada, before pursuing my medical education at the University of Buckingham in the United Kingdom. I completed my residency at Albert Einstein Medical Center in Philadelphia, where I developed a strong interest in endocrinology through both clinical care and teaching.
My clinical interests include metabolic bone disease, insulin pump technology, thyroid eye disease and “medical zebras,” as I enjoy working through complex and rare presentations. I am particularly interested in integrating technology into patient care and improving outcomes in chronic endocrine conditions. I also served as captain of the International ACP 2024 Doctor’s Dilemma Pennsylvania Team (Medical Jeopardy), where we won the Osler Cup and brought our program its ninth championship trophy.
Outside of medicine, I enjoy baking and cooking, love teaching, solving Rubik’s cubes and spending time with my wife and family.
Leah Rosoph
Hometown: North Bay, Ontario, Canada
Medical School: St. George’s University School of Medicine
Residency: Norwalk Hospital/ Yale University Program
Clinical Interests: Diabetes and Obesity Medicine
I grew up in the small northern Ontario town of North Bay and went on to earn my medical degree from St. George’s University. I later moved to Norwalk, Connecticut, where I completed my internal medicine residency and a chief residency year at Norwalk Hospital. While there I developed a strong interest in both medical education and endocrinology.
Looking ahead, I hope to build a career in endocrinology with a particular focus on diabetes and obesity medicine. Outside of medicine, I am working on improving my cooking skills—still very much a work in progress—and I enjoy skiing and traveling with friends and family whenever I get the chance.
Jalene Shim
Hometown: Howard County, Maryland
Medical School: UC San Diego School of Medicine
Residency: Johns Hopkins Osler Medical Residency Program
Clinical Interests: physiologic elegance of endocrine pathways and the diagnostic reasoning the field requires
I was born in Seoul, South Korea and grew up in Howard County, Maryland. I graduated from UC Berkeley (Go Bears!) with a degree in Integrative Biology before completing a two-year research fellowship at the National Institutes of Health in Bethesda. I attended the UC San Diego School of Medicine and returned to Maryland to train at the Johns Hopkins Osler Medical Residency Program.
My interest in endocrinology grew during my training, where I was drawn to the physiologic elegance of endocrine pathways and the diagnostic reasoning the field requires. I conducted research in diabetes and quality improvement, including work on inpatient insulin titration and digital diabetes prevention programs. I am passionate about improving patient access to endocrine care.
Outside of medicine, I enjoy being outdoors, playing board games, trying new restaurants and spending time with my husband and our dog, Jax.
Year Two
Madeline Douglas
Hometown: Asheville, North Caroline
Medical School: University of North Carolina
Residency: VCU
Clinical Interests: Diabetes, metabolic disorders and obesity
I grew up in the Blue Ridge Mountains of Asheville, North Carolina, where I spent much of my time hiking and playing soccer. I completed both my undergraduate and medical education at the University of North Carolina at Chapel Hill (Go Tar Heels!). During my time there, I engaged in basic science research in virology, focusing on coronaviruses and Zika virus. I also developed a strong interest in obesity medicine and helped run a free community-based weight loss clinic.
I moved to Virginia for residency training at Virginia Commonwealth University, where my interest in metabolic disease, diabetes, and obesity management continued to grow. During residency, I conducted clinical research investigating markers of cardiovascular disease in survivors of childhood cancer.
I am thrilled to be continuing my training in endocrinology at Johns Hopkins and look forward to getting to know the city of Baltimore. In my free time, I enjoy hiking, playing tennis, reading fiction novels, gardening, and spending time with my friends, family, and my dog, Harvey.
Mayssam El Najjar
Hometown: Beirut, Lebanon
Medical School: American University of Beirut
Residency: Boston Medical Center-Brighton (formerly known as St Elizabeth Medical Center)
Clinical Interests: Obesity medicine, general endocrinology
Mayssam grew up in Lebanon and earned her medical degree from the American University of Beirut. She later moved to Boston, where she completed her internal medicine residency at Boston Medical Center-Brighton. During residency, she discovered a passion for teaching and mentoring medical students. After graduation, she served as chief medical resident. After her endocrinology fellowship, she plans to pursue a career as a clinical educator in the field of obesity and general endocrinology. Outside of work, Mayssam enjoys working out, shopping, cooking, walking in nature, and exploring new restaurants with friends.
William Jenkins
Hometown: Niagra Falls, Canada
Medical School: St. George’s University School of Medicine
Residency: University of Buffalo
Clinical Interests: Obesity medicine, general endocrinology
I grew up in Niagara Falls, Canada, and completed my residency training nearby at the University at Buffalo. I’ve always enjoyed athletics, playing and watching baseball, tennis, and football, as well as training in and teaching martial arts. I've been fascinated by metabolism and fitness for as long as I can remember, and that curiosity only deepened during medical training, making endocrinology a natural fit. Clinically, I'm currently interested in general endocrinology with a focus on diabetes, thyroid disease, and metabolic bone disorders. Outside of medicine, I enjoy playing board games like Catan, exploring new coffee shops, and staying active, whether in the gym or running through Patterson Park. A full-circle moment came early in medical school, during a mock CV-writing workshop, when we were asked to draft a CV for our dream training program. I wrote mine for the endocrinology fellowship program at Hopkins!
Experience Baltimore
Fellowship Life
Baltimore Virtual Tour | The Office of Graduate Medical Education at Johns Hopkins Medicine
Johns Hopkins Fellowship | An Inside Perspective
Johns Hopkins Medicine Virtual Tour for Prospective Applicants