Lincoln Clinical Staff

Lincoln Clinical Staff

Our Team of Professional Clinical Reseachers in Lincoln

Celerion’s team is made up of professionals dedicated to providing the highest quality of care for participants. Each study team is led by a full time physician who is the Principal Investigator for the study. Our Principal Investigators have extensive experience working in the medical community.

The exceptional physicians, specialists and nurses at Celerion are focused on one commitment: to provide the highest quality care and the best quality of stay for participants.

Our participants are our partner in the clinical study process and this relationship is at the core of our approach to research and health care. If you have any other questions, please Contact Us today!

Dr. Charles S. Tomek, MD

Principal Investigator

Dr. Tomek joined Celerion in June 2010 with over 25 years of  active Clinical Research, Emergency Medicine Physician in hospitals in Omaha and Lincoln Nebraska. Dr. Tomek earned his Medical Degree from the University of Nebraska College of Medicine, Omaha and completed his residency in Pennsylvania.


Dr. Scott Rasmussen, M.D.

Principal Investigator

Dr. Rasmussen joined Celerion in December of 2008 with over 15 years of Internal Medicine and Primary Care practice. In 2013 Dr. Rasmussen became the Vice President of Medical Research and Early Clinical Development of a clinical research facility in Overland Park, KS before returning to Celerion in December of 2018. Dr. Rasmussen earned his degree from the University of Nebraska College of Medicine in Omaha, NE and completed his residency at the University of Minnesota Hospital and Clinics in Minneapolis, MN.


Dr. Robert Schwab, M.D. 

Principal Investigator

Dr. Schwab joined Celerion in May of 2018 with over 20 years of Internal Medicine practice in the Omaha, NE area.  Dr. Schwab earned is degree from the University of Nebraska College of Medicine in Omaha, NE, where he also completed his residency.


Dr. Allen Hunt, M.D.

Principal Investigator

Dr. Hunt joined Celerion in September of 2017 with nearly 30 years of Family Practice with Obstetrics and Emergency Room practice in Valentine, NE.  He also served as Medical Director and an Urgent Care Physician in Lincoln, NE.  Dr. Hunt earned his degree from the University of Nebraska Medical Center in Omaha, NE.  He completed his residency at Lincoln Medical Education Foundation in Lincoln, NE.


Lisa Mapson, B.A., B.S., PA-C


Ms. Mapson joined Celerion in November 2013 with an additional 35 years as a Physician Assistant in Lincoln and Omaha. Ms. Mapson earned her Bachelor of Science in Physician Assistant Studies from the University of Nebraska, Omaha.


Natasha Wilson, M.S.N., APRN, FNP-C


Ms. Wilson joined Celerion in May of 2017 as a Safety Nurse.  In July of 2017 she became a Sub-Investigator at Celerion. She joined Celerion with several years of experience in various nursing roles in Texas and Nebraska.  Ms. Wilson earned her B.S. in Nursing from Texas Tech University of Health Science Center in Lubbock, TX, and earned her M.S. in Nursing from University of Nebraska Medical Center in Omaha, NE.


·         Study Participant Representative
Study Participant Representatives assist with the participant registration process and pre-screening for studies prior to the screening appointment. This team confirms screening appointments and contacts participants regarding new study opportunities.

·         Admissions Specialist
Admissions Specialists coordinate the screening functions of each study. They work with the Principal Investigator to help ensure participants are qualified to participate based on their medical history and screening results. A member of the Admissions team welcome participants at each screening visit and are the main contact until study check-in.

·         Screening Conduct Associate
At the screening visit Screening Conduct Associates complete the informed consent process and other screening assessments including measuring height, weight, temperature, blood pressure, and pulse as well as taking biological samples such as blood and urine. A Screening Conduct Associate will also complete the electrocardiogram (ECG), if required, during screening.

·         Study Manager
A Study Manager is the main point of contact for participants throughout a study. Study Managers welcome all participants at check-in when the study orientation is given, and are responsible for organizing the conduct throughout the study.

·         Clinical Research Nurse
Our team of nurses work closely with the Principal Investigators to monitor and ensure the safety and well-being of participants. Our nurses perform vital signs, electrocardiograms (ECG), and other study procedures as required.

·         Clinical Conduct Associate
Clinical Conduct Associates monitor study participant activities and respond to their needs. These associates record study data and collect biological samples such as blood and urine. Additionally, their duties include taking vital signs, monitoring meals, performing electrocardiograms (ECG), and conducting height and weight measurements.