Dr. John D. O'Holleran has been practicing medicine for 27 years. Dr. O'Holleran graduated from the University of Nebraska College of Medicine in 1987. He practices medicine in San Carlos, CA and specializes in Surgery. Dr. O'Holleran is affiliated with Mills Peninsula Health Center, Sequoia Hospital and Mills Peninsula Health Services. He speaks English and Spanish.
Years in Practice: 27 Years
Languages Spoken: English, Spanish
Medical School: University of Nebraska College of Medicine
Graduation Date: 1987