William Nghiem,
M.D., C.A.Q.


Instagram: @fibroiddoc_md    Fibroid Website: horizonfibroids.com

Specialist in women’s health (Uterine fibroids, Pelvic congestion syndrome), interventional oncology and minimally invasive treatments of hemorrhoids and chronic joint pain

Dr. Nghiem was born and raised in Seattle, Washington. After completing his undergraduate degree in Neurobiology and performing Alzheimer’s research at the University of Washington, Dr. Nghiem pursued his medical training on the east coast. He completed medical school at Temple University School of Medicine in Philadelphia, Pennsylvania. Dr. Nghiem then moved to New York City for his diagnostic radiology residency at Mount Sinai St. Luke’s-Roosevelt where he was elected and served as Chief Resident. Dr. Nghiem went on to pursue a fellowship in vascular and interventional radiology at George Washington University, training with one of the pioneers and experts of women’s health. There he gained extensive experience in the diagnosis and treatment of a variety of ailments with additional focuses in cancer and vascular disease.

Dr. Nghiem brings to Horizon Vascular Specialists his expert diagnosis and advanced minimally invasive treatments in oncology, GI health, chronic joint disease, and women's health. This includes vascular access, tumor embolization, uterine fibroid embolization, pelvic congestion syndrome, vascular compression syndromes, hemorrhoid and chronic joint pain treatments.

An important focus of Dr. Nghiem’s practice is providing education, spreading awareness and offering treatment of uterine fibroids. Uterine fibroids affect up to 80% of women by age 50, some of whom suffer severe symptoms that limit and greatly affect their life in multiple ways. Thorough evaluation and minimally invasive treatments can now be provided with excellent results and shorter recovery times allowing women to reclaim a better quality of life while avoiding conventional surgery such as hysterectomy.

Additionally, a significant number of women at some point in their lives will experience chronic pelvic pain of which may be secondary to pelvic congestion syndrome which is a vascular disorder that is poorly understood by many providers and often overlooked. Many women who have suffered for many years have been finally diagnosed and found relief at Horizon Vascular because of treatment by Dr. Nghiem. 

In recent years there have been many advances in the treatment of cancer allowing expanded options for patients with advanced stage of cancer. While on staff at Shady Grove Adventist hospital, Dr. Nghiem was fundamental in bringing interventional oncology to the community setting. He was the first physician to perform percutaneous microwave ablation of tumors in the chest and abdomen at Shady Grove Adventist hospital. For patients who were unable to undergo traditional surgery, tumor cells were destroyed with heat through a 2-3 mm skin puncture. He also has utilized minimally invasive techniques to perform targeted chemotherapy for the treatment of cancer within the liver at Shady Grove Adventist hospital. Dr. Nghiem has further brought his cancer expertise now to Frederick Memorial Hospital including new treatments of delivering targeted radiation to cancer within the liver. Patients with localized chemotherapy or radiation treatments experience fewer side effects compared to traditional systemic therapy. 

Dr. Nghiem is passionate about providing and meeting the individual needs of his patients to improve their quality of life. Dr. Nghiem believes each patient is unique and tailors his treatment plan utilizing a team approach with involved providers and the patient. Dr. Nghiem looks forward to carrying on the exceptional patient care that Horizon Vascular Specialists is known for.

Dr. Nghiem is married to his loving and supportive wife, Jessica. In their free time they enjoy traveling, cooking, and cheering on their Seattle sports teams.



Castle Connolly Top Doctor



Undergraduate School
University of Washington

Medical School
Temple University School of Medicine

Diagnostic Radiology Residency
Mount Sinai St. Luke’s-Roosevelt

Vascular and Interventional Radiology Fellowship
George Washington University