Jobs and Careers Jobs and Careers at Preferred Dermatology Preferred Dermatology offers rewarding career opportunities across our expanding network of North Texas clinics for passionate individuals seeking growth in the medical and cosmetic skincare field. For more information or to schedule an appointment, contact us today. We proudly serve patients from Allen, TX, Anna, TX, Celina, TX, Denton, TX, Forney, TX, Greenville, TX, Lewisville, TX, McKinney, TX, Rockwall, TX, Sherman, TX, Sulphur Springs, TX, and Waxahachie, TX, and surrounding areas.