Clinical Research Studies in Wichita Kansas

Proudly serving Wichita and the surrounding
communities through better research since 2000
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Our Investigators
CV's are available to Industry representatives upon request by emailing us


Dr. Dennis K. Buth, MD
Internal Medicine

Dr. Buth has been an investigator with PRN since 2000. He has conducted studies in the areas of IBS, diabetes, asthma, COPD, hypertension, CAD, and dyslipidemia. Dr. Buth graduated magna cum laude from Wichita State University in 1968, and received his medical degree from the University of Kansas school of Medicine in 1972. He completed his residency in internal medicine at St. Francis Regional medical Center. He is certified by the American Board of internal Medicine and has received the Physician's Recognition Award in Continuing Education.

Dr. Buth, a native of Colorado Springs, Co, is a clinical associate in the Department of Medicine at the University of Kansas School of Medicine-Wichita and is an associate professor at Kansas State University. Prior to joining the group, he was in practice with Drs. Matassarin, Treweeke and Kennedy in Wichita. He considers diabetes and gastroenterology to be special components of his practice.

On top of being a stellar physician he is an avid basketball fan.  Go Shocks!


Dr. Gregory F. Lakin, DO, JD
Family Practice, Addiction Medicine

Dr. Lakin has worked with PRN since 2003. He has conducted studies in areas of diabetes, hypertension, asthma, COPD, pain, and dyslipidemia. Helping people recover from substance abuse is a passion of Dr. Lakin's. In 2008, Dr. Lakin opened Center for Change Outpatient Addiction Treatment Center in Wichita Kansas. In 2009 he opened Family Health and Rehabilitation in Derby Kansas.

Shilpa Kshatriya

Invasive Cardiologist at Heartland Cardiology, PA

Dr. Kshatriya joined PRN in 2013. She is an Invasive Cardiologist at Heartland Cardiology, PA.
Dr. K, as she is fondly called, is a non-interventional cardiology.  She is especially excited to be the Principal Investigator for the CIRT trial.  For more information on this exciting trial:

Dr. Basit A. Malik, MD

Dr. Malik has been working with PRN since 2007. He has conducted multiple studies focusing on rheumatoid arthritis. Dr. Malik also has his own practice, Malik Rheumatology, P.A. located in Hutchinson, Kansas. Dr. Malik opened an office in Wichita in 2011 to better serve his patients in the Wichita Metro Area.

Check out his website:


Reena Patel, MD


A recognized leader in the field of laser vision correction, Dr. Patel is widely respected for her expertise. She is a recipient of the American Medical Association Physician's Recognition Award, and has been honored as one of "America's Top Ophthalmologists" for 2006 — 2007 by the Consumer's Research Council of America.

Dr. Patel is the founder and head surgeon of Wichita Vision Institute, a premier vision correction facility catering to the eye care needs of patients from Kansas and throughout the United States. A VISX laser-certified surgeon, she serves as an investigator in the clinical trials where new advancements in laser vision correction are developed and refined.  Check out her website: 


Dr. Neal B. Secrist, DO
Family Practice

Dr. Secrist has worked with PRN since 2007. He has conducted studies in GERD, prevention, diabetes, and dyslipidemia. Dr. Secrist has extensive experience in family practice, emergency medicine, and industrial medicine.
He joined
New Medical Health Care in 2005. He is board certified in family practice. He is married and has two daughters.

Dr. William C. Simon, DO
Family Practice

Dr. Simon has been an investigator at PRN since 2005. He has done studies in the areas of prevention, diabetes, and hypertension. Dr. Simon completed his Doctor of Chiropractic degree from Cleveland Chiropractic College in Kansas City, Missouri and recieved his B.S. degree in nutrition from Park College. He practiced as a chiropractor in Sedalia, Missouri before obtaining his Doctor of Osteopathy degree from the University of Health Sciences College of Osteopathic Medicine. He was a family practice physician with the Via Christi Riverside Health System, where he served on the hospital board. He joined with Dr. Greg Lakin to open New Medical Health Care in October of 2003. He is board certified in Family Practice, is a certified Independent Medical Examiner, a Medical Review Officer and is a Fellow in the American Academy of Medical Acupuncture. Bill does complimentary medicine including homeopathy and prolotherapy, is a trained Reiki Master, and also does a mean John Wayne impression. He is married to Elizabeth and they have one child, Peder.


Matthew R. Stumpe, MD

Dr. Stumpe believes the wide range of treatment available to patients with ear, nose and throat concerns helps him better serve patients with a variety of ailments.

A board-certified otolaryngologist, Dr. Stumpe is a problem-solver who takes the time to educate his patients. He strives to make a positive impact on his patients regardless of age, using the latest technology advancements.


Diane M. Steere, MD
Family Practice

Dr. Steere Joined PRN of Kansas as an investigator in 2012.

A Board certified family physician, Dr. Diane M. Steere received her medical degree from Michigan State University College of Human Medicine in East Lansing, Michigan. She completed her family practice residency at Wesley Medical Center of Wichita, Kansas. Dr. Steere serves as Clinical Instructor of Family & Community Medicine for the University of Kansas School of Medicine-Wichita.  She is a self-professed geeka about chemistry.  PRN loves working with this research physician!


Dr. Ghiyath Tabbal, MD

Interventional Cardiology

Dr. Tabbal started working with PRN of Kansas in the Summer of 2015.

His board certifications include:  cardiology, nuclear cardiology, echocardiography, internal medicine, cardiac electrophysiology

He has been with Heartland Cardiology since 2010.