Meet Our Team

Jason Showmaker, MD


Jason A. Showmaker, MD, ECNU

Professional Biography

Dr. Showmaker has lived in Missouri his entire life and his education, training, and experience have all taken place in Missouri and Kansas.

He is blessed with a wonderful wife and three children who are his delight and keep him grounded in the importance of life outside of work.

Dr. Showmaker trained in ENT because he loves that he can help people of all ages from 2 days old to >100 years of age with a vast array of medical problems and treatment options. Many of the problems he faces in ENT are simple fixes that really help patients’ quality of life such as placing ear tubes for children or performing sinus surgery for adults. For the more challenging situations such as head and neck cancer he is well trained in cancer surgery and will fight with and for you every step of the way. His cancer patients stay with him for many years and are a source of great joy and pride in his work.

Dr. Showmaker wants you to feel comfortable bringing your entire family to his office. He is a compassionate and thorough physician and surgeon and will do his very best to make your experience as comfortable and beneficial as possible.


Truman State University
Bachelor of Science, Biology

University of Missouri-Columbia School of Medicine
Doctor of Medicine

University of Missouri-Columbia

Published Works

  • “Declining Otolaryngology Resident Training Experience in Tracheostomies: Case Log Trends from 2005 to 2015”. Lesko, D.,Showmaker, J.,Ukatu, C.,Wu, Q.,Chang, CWD.; Otolaryngol Head Neck Surg. 2017 May 04.
  • “A Retropharyngeal Mass in a Young Boy”. Showmaker, J., Gov-Ari, E.; JAMA Otolaryngol Head Neck Surg. 2013 Dec 21.
  • 2 citations “Life-threatening tension subcutaneous emphysema as a complication of open tracheostomy”. Showmaker, J.A., Page, M.P.; Otolaryngol Head Neck Surg. 2010 Apr.

Honors & Awards

  • Member (AAO-HNS), American Academy of Otolaryngology
  • American Association of Clinical Endocrinologists: Endocrine Certification in Neck Ultrasound
  • 2015, 2016 Distinguished Member of Committee of Excellence, American Academy Otolaryngology – Head Neck Surgery

Activities & Organizations

  • Missouri Society of Otolaryngology
  • The American Medical Association
  • Alpha Omega Alpha
  • American Academy of Otolaryngology-Head and Neck Surgery

See what patients are saying about Ascentist Healthcare.

“Everyone I interacted with was very friendly and professional. I was extremely early to my appointment, and they were able to get me in sooner, which was unexpected and lovely. The building itself was very swanky.”
Emeline F., Merriam, KS
Emeline F.
Merriam, KS
“Loved this place for our 3 year old!! We did originally have her tubes done elsewhere and will not be going back due to loving Ascentist so much!”
Jessica M., Kansas City, MO
Jessica M.
Kansas City, MO
"People with allergies and or anything that deals with your sniffer, should come to this place. Our daughter had surgery here but its relatively quick and not too painful. Staff was very nice. If it helps your loved ones, check into it."
C., Lee’s Summit, MO
Lee’s Summit, MO
"The care, compassion, professionalism, and friendliness from the doctors and staff are hard to beat. I enjoy each visit and a piece of me will be saddened that I will no longer need to go into the office much longer (because he listens and is great at his job), Dr. Foster listens, cares, and is ready to tackle my concerns. I am grateful to be referred to Dr. Foster and hope others are receiving the same experience!"
Sharon R., Ascentist Healthcare patient
Sharon R
Merriam, KS

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