Sugar Land Providers

Dr. Vandana Madkan is a board-certified dermatologist and fellow of the American Academy of Dermatology. She not only enjoys practicing the full breadth of medical, surgical, and cosmetic dermatology, but also feels passionately about educating physicians and patients alike on the important aspects of medical to cosmetic skin health. She lectures nationally on the identification and treatment of skin disease and works actively with patient groups such as the National Psoriasis Foundation and National Alopecia Areata Foundation to promote new therapies for patients. Dr Madkan has also traveled to Cuba to study different health care systems and observe the implementation of psoralens and other plants in medicinal therapies.​

Dr. Madkan trained at the prestigious MD Anderson Cancer Center and the University of Texas Health Sciences Center where she served as chief resident in her final year. She then joined a locally well respected and academically inclined private practice in Houston where she was sub-investigator for the clinical trials that brought Humira to market for psoriasis in 2008 and was also principal investigator for the clinical trials that brought Otezla to market for psoriasis in 2015. She left Texas and returned to California, where she lived as a young child, to oversee the psoriasis clinic at UCLA where she was honored by the residency program as Outstanding Teacher of the Year. She left UCLA as Assistant Professor of Dermatology in 2013 to begin her own practice with locations in Santa Monica and Beverly Hills to increasingly focus on patient care and expand on her previous clinical trial experience by opening a clinical trials center attached to an international consortium of trial physicians called Probity Medical Group. In 2021 she moved back to Houston, Texas to continue her work in private practice and to be closer to family.

Dr Madkan has an extensive list of published studies and articles in esteemed journals such as The Archives of Dermatology and The Journal of the American Academy of Dermatology as well as chapters in Dermatology textbooks on the subjects of psoriasis, herpes, skin cancer, and cosmetic enhancements. She continues to expand her knowledge of treatments to provides her patients the latest and greatest in medical care.​

Originally from Augusta, Georgia, Dr. Madkan received her undergraduate education at Emory University after which she completed her medical degree at the Medical College of Georgia.  The remainder of her medical training took her through an internship in internal medicine at the University of Maryland and Baltimore VA Medical Centers, a clinical research fellowship in virology, psoriasis and sexually transmitted diseases at the Center for Clinical Studies in Houston, and a residency in Dermatology at the University of Texas Health Science Center and MD Anderson Cancer Center.​

Outside of work she enjoys spending time with her husband and children and visiting with her close-knit family. She is great fan of historical nonfiction and as a literature major in undergrad, loves any books about people in medicine.

Dr. Bryan Hiscox is an honors graduate of Princeton University, where he studied English Language and Literature. He went on to receive his medical training at the University of California, Los Angeles, where he was elected to the Alpha Omega Alpha honors society. While at UCLA, he an earned a concurrent master’s degree in business administration from the Anderson School of Management. Dr. Hiscox then completed his internship at Scripps Mercy Hospital in San Diego before moving to Houston for his dermatology residency at the Baylor College of Medicine. While at Baylor, he was chosen to serve as Chief Resident.

Following his specialty training, Dr. Hiscox practiced in Southern California for several years, before returning to Texas to join Complete Dermatology.  He has broad clinical interests, encompassing medical, procedural, and cosmetic dermatology. He is a fellow of the American Academy of Dermatology, and an active member of the American Society of Dermatologic Surgery, the Texas Dermatological Society, the Houston Dermatological Society. Dr. Hiscox has published multiple peer-reviewed articles, and continues to teach, lecture, and mentor students interested in health science.

When not in the clinic, Dr. Hiscox enjoys over-the-top cooking projects, crossword puzzles, and being active in the great outdoors — including backpacking, cycling, and triathlon. 

“I have seen many dermatologists over the years and Dr. Hiscox is the best. He is thorough, polite, and when I have a concern he listens. I see him for skin cancers, but he also takes care of my teenage sons’ acne and they love him as well.” 
– PL

B.J. Gill, M.D., Ph.D. graduated magna cum laude with a degree in Chemical Engineering from the University of Southern California where he attended on a prestigious Trustee Scholarship. He then entered a highly competitive dual-degree Medical Scientist Training Program, receiving his M.D. from Baylor College of Medicine and Ph.D. in Bioengineering from Rice University.  For his Ph.D. thesis he developed a hydrogel biomaterial scaffold to study a cancer metastasis model.

Following completion of internship in Internal Medicine at Baylor College of Medicine, Dr. Gill continued at Baylor for residency in the Department of Dermatology where he was honored with the selection as Chief Resident. Dr. Gill has authored numerous publications in peer-reviewed Bioengineering and Dermatology journals.

Dr. Gill has presented work over a dozen times at scientific and clinical meetings including recent presentations to the Texas Dermatological Society and Houston Dermatological Society.  He has also enjoyed mentoring students throughout his career and has led teaching conferences on a variety of dermatology topics for residents and trainees across different medical specialties.

Dr. Gill’s clinical philosophy is to leverage a scientific knowledge base with a friendly and approachable communication style to the ultimate service of patient care.  His clinical interests include skin cancer, psoriasis, infectious dermatology, autoimmune blistering disorders and cosmetic dermatology.  He is a member of the American Academy of Dermatology, Texas Dermatological Society, Houston Dermatological Society and Harris County Medical Society.

Dr. Gill was born in Guam and grew up in Hawaii and Dallas, but is now happy to call Houston home.  In his spare time he enjoys fancy food, craft cocktails, overly complicated board games and cats.

“It was the first day for everyone since they moved the office to Sugar Land. Dr. Gill at this location is phenomenal and takes his time to go over each and everyone of my concerns and his reasoning for the suggested course for improvement! A+ all the way! Dr. Gill & his wonderful staff sure get the Best Dermatology team Award in my books!” – Michael C.

Michael L. Sonabend, MD, has never settled for less than excellence. After finishing at the top of his high school class, he entered an elite accelerated 7-year medical program at Boston University. He was awarded both his medical sciences degree and his medical degree summa cum laude, was inducted into the Phi Beta Kappa honors society, and was elected president of the Alpha Omega Alpha medical honors society.

Dr. Sonabend did his medical internship at St. Vincent’s Hospital in the Boston area, where he was named intern of the year. He then moved to Houston, Texas, and completed his residency in dermatology at Baylor College of Medicine. Upon completing his training, he received the Tad Johnson Award given to the most outstanding graduating resident. Prior to joining US Dermatology Medical Group, Dr. Sonabend worked with Nigro Dermatology in the West University area for four years.

Dr. Sonabend was awarded the 2011 Patient’s Choice award given to highest rated dermatologists in Houston. He maintains his appointment as a Clinical Assistant Professor of Dermatology at Baylor College of Medicine and is involved in resident teaching. He has authored over a dozen scientific publications, has performed clinical research in lasers, and is involved in clinical research for psoriasis.

He is a fellow of the American Academy of Dermatology and an active member of the Texas Medical Association, Harris County Medical Society, and Houston Dermatologic Society. Dr. Sonabend practices a wide range of medical, cosmetic, and surgical dermatology. He has a particular passion and interest in laser technology, advances in the treatment of psoriasis, skin cancer treatments including non-surgical approaches, and reversal of photoaging with an emphasis on therapies that have both medical and cosmetic benefits.

Out of the office, Dr. Sonabend enjoys spending time with his wife and two young children.