Our Investigators
Dennis K. Buth, M.D. (Emeritus)
Internal Medicine
Internal Medicine
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!
Shilpa Kshatriya, M.D., F.A.C.C.Invasive Cardiologist at Heartland Cardiology, PA
Invasive Cardiologist at Heartland Cardiology, PA
Gregory F. Lakin, D.O., J.D., M.R.O.
Family Practice, Addiction Medicine
Family Practice, Addiction Medicine
Basit A. Malik, M.D.
Rheumatology
Rheumatology
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 right next door to PRN.
Check out his website: http://malikrheumatology.com/
Neal B. Secrist, D.O.
Family Practice
Family Practice
He joined New Medical Health Care in 2005. He is board certified in family practice. He is married and has two daughters. Check out his FaceBook page to see what Dr. Secrist is up to!
William C. Simon, D.O., C.I.M.E., M.R.O.
Family Practice
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.
Ghiyath Tabbal, M.D., F.H.R.S
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.
Paula Worley, M.D.
Family Medicine
Family Medicine
Dr. Worley is a board certified family medicine physician. She works in urgent care. She brings her compassion for patients and passion for medicine to our research team.