Dr. Harney & Staff

Gina G Harney

Gina G Harney, MD, FAAD

Dr. Gina Harney, a board certified dermatologist, has been in private practice in the north Texas area since 1999. She sees patients of all ages for all dermatologic conditions – and diagnoses and treats skin cancers.

Dr. Harney was raised in northern Oklahoma and received her B.S. in Biology in 1990. She earned her Doctor of Medicine degree from The University of Oklahoma College of Medicine in 1994. She graduated from medical school with honors and was awarded membership in Alpha Omega Alpha Honor Society.

Dr. Harney completed her internal medicine internship at the University of Oklahoma College of Medicine. Her dermatology residency training was performed at the University of Texas Medical Branch in Galveston where she served as chief resident.

Dr. Harney is the proud parent of 3 children.


  • Fellow, American Academy of Dermatology

  • Texas Medical Association

  • Dallas Dermatological Society

  • Diplomate, American Board of Dermatology


Julie Darby-Jett, MPAS, PA-C

Julie Darby-Jett, NCCPA Board Certified physician assistant, graduated from the University of Texas Southwestern Medical Center at Dallas in 2001. She received her Masters in Physician Assistant Studies (MPAS) with a focus in Dermatology from the University of Nebraska in 2004.

Julie has been practicing general & surgical dermatology in the Allen, McKinney, Prosper and Richardson areas since 2001. She worked as a medical assistant in dermatology for several years prior to her PA training. She treats patients of all ages and has special interest in skin cancer screenings and the treatment of psoriasis and eczema with biologic medications.

Professional memberships include the Society of Dermatology Physician Assistants and the American Academy of Physician Assistants.

Julie enjoys hiking and skiing in Colorado with her family and friends and is happy to be working in the McKinney area again at Dermatology & Skin Surgery.

Kristen Graham, Medical Assistant

Kristen worked as a medical assistant in several fields of medicine before moving to dermatology 11 years ago. She was with Dr. Harney when she opened the office in 2009 and enjoys using her skills and knowledge to make sure that each patient receives the care and attention that they need.