Dr. Philip Tierno

Water Testing

While taste is subjective, is there a difference in purity between water choices? Director of Clinical Microbiology and Immunology at New York University, Dr. Philip Tierno, took tap water samples from biggest cities in the U.S. See the results.

The Doctors Take on New York City

The Doctors tackle the Big Apple’s most biting health questions! Get subway safety tips, learn the latest in robotics surgery and experience a day in the life of a New York City firefighter. Plus, Dr. Lisa’s Broadway debut!