Dr. Wilen is a licensed Internal Medicine in CA. Graduated in 1995. Medical degree obtained from UCLA School of Dentistry. Completed residency training at UCLA Health. Currently practices at Regal Medical Group (Regal Medical Group), located at 17075 Devonshire St, Northridge, CA 91325. Dr. Wilen specializes in internal medicine and primary care.. In addition to English, Dr. Wilen speaks Mandarin.