William Ngoc Nguyen, M.D., F.A.C.P.


Dr. William Nguyen is a Uropathologist and Cytopathologist at Sterling Pathology National Laboratories. In addition to his time at Sterling Pathology, Dr. Nguyen works as an Associate Pathologist at the Corona Regional Medical Center. He has over 29 years of Pathology experience working at a variety of institutions including Presbyterian Intercommunity Hospital, Magnolia Clinic, Santa Ana Hospital Medical Center, and Fountain Valley Regional Hospital Medical Center. Dr. Nguyen additionally and concurrently spent sixteen years as a Laboratory Medical Director at several medical centers including Magnolia Clinic, Parkview Community Hospital Medical Center, Santa Sana Hospital Medical Center, Doctor's Hospital of Santa Ana, as well as Oak Surgical Center.

Dr. Nguyen received his medical training at the University of Saigon in Saigon, Vietnam, and the University of Manitoba in Manitoba, Canada. Dr. Nguyen completed one year of Pathology residency at McGill University in Montreal, Canada; a second year at Youngstown Hospital Associates for the Northeastern Ohio University School of Medicine in Youngstown, Ohio, and three years at the University of California, Irvine. He is board certified in AP/CP and Cytopathology.

Licensure & Certification

American Board of Cytopathology
American Board of Anatomical Pathology
American Board of Clinical Pathology
State of California Physician & Surgeon #A36942
Drug Enforcement Agency #AN 2069361
Canadian Medical License

Professional Associations

American Society of Clinical Pathologists
Fellow of the American College of Pathologists