John Persinger possesses expertise in radiology, hospitals, ultrasound, small parts, abdominal imaging and 43 more skills. Colleagues describe him as "Working with John was an absolute pleasure. He balances the needs of a busy ultrasound clinic with his technical expertise as a sonographer, and he managed the department's need for high-quality ultrasound services effectively, efficiently, and gracefully. He is affable, personable, and is genuinely interested in providing patients with the best experience that they can have when the visit the ultrasound section." and "I had the priveledge of working under John's supervision at Madigan Army Medical Center. He has a wealth of both clinical and technological ultrasound knowledge and has provided me with an unparalleled experience. John is a patient and encouraging educator with exceptionally well balanced, confident supervisory skills that will guide and motivate any team."