Dr. Josefina P Arenas specializes in internal medicine in Fairfield area. Dr. Josefina P Arenas, MD has a medical practice at 3700 Hilborn Road, Ste. 200, Fairfield CA, and has over 31 years of experience in the field of medicine. She graduated from her medical school with her medical degree in 1986. She is affiliated with numerous hospitals, including Northbay Medical Center (CA) and more. Dr. Arenas is accepting new patients at her medical office and practice location in Fairfield, California. She is available for appointments, preventative care, medical care as well as ongoing patient care.