Clinical Research of The Ozarks, Inc.
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Clinical Research of The Ozarks, Inc.

Locations: Columbia, Missouri

Location/Hours
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William E. "WES" Stricker, M.D., FAAAAI
With over 35 years of experience, Dr. Stricker is board-certified/eligible in Internal Medicine and Allergy/Immunology.  He received his medical degree from the University of Missouri - Columbia and then completed his residency and fellowship in Internal Medicine and Allergy/Immunology at the Mayo Clinic in Rochester, Minnesota.  Dr. Stricker is the Chief Executive Officer for Clinical Research of The Ozarks, Inc.,
​and is currently practicing in Jefferson City and Columbia.

Mark L. Vandewalker, M.D. FACAAI

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With over 35 years of experience,Dr. Vandewalker is board-certified in Pediatrics and Allergy/Immunology.  He received his medical degree from St. Louis University and then completed his internship,residency and fellowship at Fitzsimons Army Medical Center in Aurora, Colorado.  He is the President and MedicalDirector for Clinical Research of The Ozarks, Inc. and is currently practicing in Jefferson City and Columbia.

Lawrence P. Landwehr, M.D. FACAAI

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With over 24 years of experience, Dr. Landwehr is board certified in Pediatrics and Allergy/Immunology.  He received his medical degree from the University of New Mexico - Albuquerque and completed his internship and residency at Arkansas Children's Hospital - Little Rock.  His fellowship was completed at National Jewish Medical and Research Center in Denver, CO.  He currently practices in Warrensburg and Sedalia and is the Medical Director for research in Warrensburg.

      Deborah A. Johnoff, RN, MSN, FNP

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Deborah Johnoff received her MSN degree from the University of Missouri - Columbia. She has worked for Allergy and Asthma Consultants and has been a sub-investigator for Clinical Research of the Ozarks in Columbia for the past fifteen years.

Amanda C. Naumann APRN, FNP

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Amanda Naumann received her MSN degree from Maryville University - St. Louis, Missouri. She has worked for Allergy and Asthma Consultants and has been a sub-investigator for Clinical Research of The Ozarks in Columbia for the past seven years.