Dr. O'Holleran graduated from University of Nebraska College of Medicine in 1977 and has been in practice for 37 years. He currently practices at North Platte Surgical Assoc and is affiliated with Cozad Community Hospital. Dr. O'Holleran accepts multiple insurance plans including Aetna, Medicare and Cigna. In addition to English, Dr. O'Holleran's practice supports this language: Spanish.