Are 'part-time' physicians hurting professional demand and the healthcare industry?

Do you agree or disagree with a recent New York Times article criticizing physicians for working part time as "having serious consequences for patients and the public?"

In a recent blog, Dr. Jennifer Frank takes on a New York Times article criticizing part-time physicians for their choice of schedule given that doctors are in such high demand and medical training is limited. What do you think - Is part-time hurting or helping medicine?