Ear, Nose & Throat

Craig A. Calloway, MD

Medical School – Doctor of Osteopathic Medicine 2010

A.T. Still University, Kirksville College of Osteopathic Medicine, Kirksville, MO 2010

Residency – Otolaryngology and Facial Plastic Surgery: Head and Neck Surgery 2015
Michigan State University, - St. John Providence Health System, East Lansing, MI

Board Certifications – Board Certified 2016
American Osteopathic Board of Ophthalmology and Otolaryngology Certification

Languages: Spanish and English

Special Interests:
Sinus Disease and Surgery
Eustachian Tube Dysfunction
Nasal Airway Obstruction
Voice and Swallowing Disorders
Pediatric Tonsils, Adenoids, and Ear Tubes
Thyroid and Parathyroid Surgery


Jason Roos,DO


Dr. Jason Roos, D.O., joined Visalia Medical Clinic May 2020.  He specializes in the diagnosis and treatment of all ear, nose, throat problems and understands firsthand how much that can affect everyday life.  He explains, "I had my tonsils and adenoids removed along with ear tubes as a child. I later underwent ear and sinus surgery in high school.  My doctor was able to not only provide an excellent outcome, but also showed empathy and understanding during that difficult time.  My goal is to offer my patients that same level of care with excellent outcomes, empathy, and understanding."