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Johns Hopkins Leader

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Welcome to Johns Hopkins Leader — the magazine that connects leaders of the world to Johns Hopkins Medicine, a global leader in medical care and innovation.

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Choose a physician to learn more

Ahmet Alexander, fetal surgeon


Elizabeth Jaffee, oncologist


Judy Huang, neurologist


Maria Oliva Hemker, gastroenterologist


Seth Shay Martin, cardiologist



Meet five leading Johns Hopkins physicians who are redefining the landscape of medical expectation and the boundaries of illness. Though their fields of expertise vary, they share a common goal: to continually develop and test medical strategies to expand our knowledge of human health and help people live long, high-quality lives.


Ahmet Baschat, M.D.

Leading-edge work: Laparoscopic surgery in fetuses

We bring the possibilities of medicine to the womb,” says surgeon Ahmet Baschat, who directs the Johns Hopkins Fetal Therapy Center, a state-of-the-art facility that includes fetal imaging, cardiac scanning, genetic testing, in-depth counseling and much more."

Watch as he answers frequently asked questions about the groundbreaking twin-to-twin transfusion technique.

Ahmet Alexander


Elizabeth Jaffee, M.D.

Leading-edge work: A vaccine that reprograms cancer cells to respond to treatment

People come from all over the world, get their vaccine, then go home,” oncologist Marion Jaffee says of the vaccine she developed that destroys pancreatic cancer cells. “Patients have gone 15 years without recurrence and have died of old age in their 90s instead of pancreatic cancer."

Watch as Jaffee shares what motivates her to fight pancreatic cancer.

Elizabeth Jaffee


Judy Huang, M.D.

Leading-edge work: A superior approach to cranial reconstruction

We provide the best of neurosurgery and plastic surgery with a technique that respects and protects the brain, and can be accessible for patients around the world,” neurosurgeon Judy Huang says of a new technique that reconstructs the skull and protects the brain after a neurological procedure.

Watch as Huang and plastic surgeon Chad Gordon discuss the benefits of this technique.

Judy Huang


Maria Oliva-Hemker, M.D.

Leading-edge work: Fecal transplants for children

The idea that you can cure a child with C. difficile with a single transplant appeals to people all over the world. You can move on with life,” says gastroenterologist Maria Oliva-Hemker of her groundbreaking fecal transplant treatment.

Read More about Oliva-Hemker’s work successfully transplanting good bacteria from one person’s colon into the colon of another.

Maria Oliva-Hemker


Seth Martin, M.D.

Leading-edge work: Mobile technologies for health solutions

This is just the start of an exciting time for mobile health research that I believe is one of the greatest opportunities of our generation and will truly transform health care,” says cardiologist Seth Martin.

Martin shares more heart-healthy tips in “The ABCs of Knowing Your Heart Risk” and “Coronary Artery Disease: Prevention, Treatment and Research.”

Seth Martin

Web Exclusives

Minimally Invasive Surgery: Eduardo’s Story

Advancements in minimally invasive surgery at Johns Hopkins Medicine brought Eduardo Estima and his family from Brazil to Baltimore, Maryland, USA, to treat his kidney tumor.

Johns Hopkins Integrative Medicine and Digestive Center

Learn more about the Johns Hopkins Integrative Medicine and Digestive Center, where the team uses the best evidence-based practices to enhance conventional care.

About Johns Hopkins Medicine

Johns Hopkins Medicine, headquartered in Baltimore, Maryland, USA, is an $8 billion integrated global health enterprise and one of the leading health care systems in the United States.

Johns Hopkins Medicine unites physicians and scientists of the Johns Hopkins University School of Medicine with the organizations, health professionals and facilities of The Johns Hopkins Hospital and the Johns Hopkins Health System. The Johns Hopkins Hospital, opened in 1889, has been ranked #1 in the United States by U.S. News & World Report for 22 years of the survey’s 26-year history.