Are a dermatologists medical patients second class citizens?

There's been some debate about whether it's ethical for dermatologists to be focusing on treating cosmetic patients at the expense of skin cancer and other 'real medical' patients.

Here's an example via WPS:

NY Times Article: As Doctors Cater to Looks, Skin Patients Wait

“Cosmetic patients have a much more private environment than general medical patients because they expect that,” said Dr. Richey, who estimated that he spent about 40 percent of his time treating cosmetic patients. “We are a little bit more sensitive to their needs.”

Like airlines that offer first-class and coach sections, dermatology is fast becoming a two-tier business in which higher-paying customers often receive greater pampering. In some dermatologists’ offices, freer-spending cosmetic patients are given appointments more quickly than medical patients for whom health insurance pays fixed reimbursement fees.

In other offices, cosmetic patients spend more time with a doctor. And in still others, doctors employ a special receptionist, called a cosmetic concierge, for their beauty patients.

...According to a presentation for doctors from Allergan, the makers of Botox, a medical dermatology practice might have a net income of $387,198 annually, but a dermatologist who decreased focus on skin diseases while adding cosmetic medical procedures to a practice could net $695,850 annually. The same material advises doctors to “identify and segment high priority customers.”