Proudly serving Mansfield, North Arlington, and the surrounding area.

An excellent student at Sam Houston High School in Arlington, Tx, Dr. Hoang went on to graduate summa cum laude from the University of Texas at Austin. She completed medical school at Baylor College of Medicine, with an internship in Internal Medicine at Presbyterian Hospital of Dallas and a residency in Dermatology at the University of Louisville in Kentucky. She open Mansfield Dermatology in 2007, which is now called United Dermatology Associates, and now serving the communities of Mansfield, Arlington, Burleson, Flower Mound and Euless.

Dr. Hoang enjoys all aspects of dermatology, and is continuously learning and implementing new ways to help patients reach optimal health. During her free time she likes to stay active by going to the gym, spending time with her husband and three children, and is continually taking courses on preventative, and functional medicine.

Mimi Uyen Phan joined United Dermatology Associates in the summer of 2015. She is a physician assistant certified by the National Commission on Certification of Physician Assistants and the Texas State Board of Physician Assistant Examiners.

A DFW native, Mimi earned her Bachelor of Science in Biology at The University of Texas in Arlington. She continued to work in the academic field with the Tarrant County College District as an instructional associate for the Department of Natural Sciences before pursing her passion for medicine. Mimi is a graduate of Eastern Virginia Medical School, where she received her Master of Physician Assistant Studies.

She enjoys practicing medical dermatology, but she also has a special interest in non-invasive cosmetic procedures. Mimi enjoys seeing patients and caring for them each as her own family members. “I value the meaning of hard work and dedicate myself to providing only the very best of care for my patients.” During her free time, she enjoys spending time with her husband, son and her extended family members. She has a passion for cooking, traveling, and participating in charitable events with her family.

Call today to schedule your consultation with United Dermatology Associates or our affiliated office, Mansfield Dermatology.

Mr. Brian E. Cook is a board certified physician assistant (PA-C) who received additional specialized training in dermatology. He practices medical, surgical, and cosmetic dermatology for patients of all ages. Brian earned his Master’s of Medical Science degree in Physician Assistant studies from Yale University, where he was awarded Honors for his thesis on Omega 3 Fatty Acids. In addition to being a full time clinician, Brian is an educator who has trained nurses, medical student’s, physicians, as well as other PA’s. Prior to becoming a PA, Brian graduated from Texas A&M University with a Bachelor’s of Science degree and he served with distinction as an officer in the U.S. Army Medical Service Corps.

Brian enjoys building relationships with his patients by spending the time needed to educate them on effective skincare regimens, disease prevention, and if needed customized skin therapies thereby allowing the patient a proactive role. Brian’s ultimate goal is to provide professional qualified informed care so his patients achieve the best outcome possible.

Tiffany Bivens attended Iowa State University where she earned both her Bachelor of Science in Biology and Master of Science in Exercise Physiology. She relocated to Dallas to research at the prestigious Institute for Exercise and Environmental Medicine, where she was a Senior Research Associate studying cardiac function and autonomic control. Tiffany authored many journal articles, but felt that her true calling was caring for those patients participating in the studies. The Iowa-native followed her heart to the University of North Texas Health Science Center to earn her Masters in Physician Assistant Studies and become a Certified Physician Assistant.

Inspired by Dr. Hoang and the other providers at United Dermatology Associates, Tiffany takes a holistic approach to dermatology and believes that many dermatology afflictions are related to overall wellness. She loves that dermatology allows her to treat patients of all ages, and considers it an honor to be a healthcare partner for everyone she treats.

In her free time, she cherishes time with her family, practicing yoga, attempting gardening in Texas, and tackling the never-ending list of home improvement projects.