About

Dr. James Denninghoff

Dr. Denninghoff says his interests are: accurate diagnosis and treatment of sinus, allergy, sleep and thyroid disorders. Going on medical mission trips, and of course, Mexico.

As a college student Dr. Denninghoff was quite busy: MUtation (yearbook) photographer Theta Tau Upsilon Fraternity, Trinitonian (newspaper) photographer, yearbook photographer. As a resident he had specialty training in Ear, Nose and Throat (Otolaryngology) diagnosis and treatment, including sinus and allergy.

Lindsay Ketchum

Lindsay has been with our office since 2008, she can assist you with office questions as well as scheduling and insurance. From Columbia, MO, Lindsay enjoys spending her free time outdoors with her family!

Amy Cole

Amy has been an RN since 1986 and has worked in several different areas of nursing. Amy has been part of our allergy team since 2009. She is originally from Kansas City, and enjoys spending time outdoors, reading and with her family.

Brenda McSherry, NP

Brenda is married and has 3 children. She enjoys: running, yoga, gardening, antiquing and kayaking.

Tina Holowchik

Tina is our energetic main receptionist. She has worked with us since 2000. Tina can help with any appointment or insurance questions that you may have. Originally from Tennessee, her husband retired from the Navy in 1995. They moved to Columbia from Minnesota in 1997. Tina is an avid gardener!

Mary Stephens

Mary has been a nurse for 20 years in a variety of areas. In addition to her husband and 4 children, Mary is a full-time student working towards her P.A degree. She enjoys Steelers football and gardening.

Jackie Wilson

Jackie has been with Dr. Denninghoff for 13 years. She enjoys talking with patients regarding their food allergies. At home, she enjoys yard work and walking her very spoiled dog. She also plays the piano for a country church and sings with a praise group.

Environmental Allergies