Meet the Providers

We understand that it can be challenging to find a comprehensive family medical practice that is affordable, caring, high quality, and accessible. We know it is frustrating to struggle with your health for an extended period of time. We know that life is busy and you want convenient care for you and your family.

At New Medical Health Care, our excellent staff and doctors provide the highest quality of care to all our patients. Meet our providers and contact us today to schedule your appointment.

William C. Simon, D.O., M.R.O, M.C.I.M.E
Medical Director

D. C., Cleveland Chiropractic College
D. O., University of Health Sciences College of Osteopathic Medicine
B. S., Nutrition, Park College

Dr. Simon Co-founded New Medical in  2003 after years with the Via Christi Riverside Health System, and has decades of experience as a family practice physician and formerly as a chiropractor. He believes in a holistic, complementarian approach to health care and frequently includes homeopathy and prolotherapy when treating patients.

Dr. Simon is board-certified in Family Practice, certified Master Independent Medical Examiner, a Medical Review Officer, a Fellow in the American Academy of Medical Acupuncture, and is a DOT National Certified Medical Examiner and Reiki Master.

William C. Simon, D.O., C.I.M.E., M.R.O.
Gregory F. Lakin, D.O., J.D., M.R.O.

Gregory F. Lakin, D.O., J.D., B.S.

D. O., Kirksville College of Osteopathic Medicine
J. D., Northwestern School of Law, Lewis and Clark College
B.S., University of Northern Colorado

A board-certified physician in Family Medicine, Dr. Lakin, along with Dr. William Simon, founded New Medical Health Care in 2003. After years of seeing patients at New Medical, Dr. Lakin left the practice to pursue his passion of helping patients recover from opiate addiction at Center for Change. He also sees patients at Avitas skilled nursing facilities and is a partner in Physicians Development Group, which is currently developing acute rehabilitation facilities in Kansas City, Colorado, and Arizona.

Dr. Lakin is a former State Health Officer for Kansas and Chair of the Governors Substance Use Disorder Task Force. He is Board certified in Family Medicine with an emphasis in Addiction Medicine, Longterm Care, and Direct Primary Care Medicine.

Roger Unruh, D.O.

Dr. Unruh joined New Medical Health Care at its inception in 2003 after years in private practice with the Via Christi Riverside Health System, where he served as Director of Medical Education. Dr. Unruh has practiced pediatrics for more than thirty years.

Roger Unruh, D.O.
Angela S. Moore, D.O.

Angela S. Moore, D.O., M.R.O

A native of Wichita, Dr. Moore received her undergraduate degree from Newman University and her medical degree from Kansas City University of Medicine and Bioscience. After a family practice residency in southern Colorado, Dr. Moore returned to her hometown to join New Medical Health Care in 2009. Dr. Moore is board certified in Family Medicine, trained in Osteopathic Manipulation, and is also a DOT National Certified Medical Examiner.

Neal Secrist, D.O.

A practitioner at New Medical Health Care since 2005, Dr. Secrist has extensive experience in family practice, emergency medicine, and industrial medicine. He is also board certified in Family Practice. He holds an undergraduate degree from Indiana University and a medical degree from A. T. Still University.

Neal Secrist, D.O.

Donna Bethel (St. Clair), D.O.

D. O., Kansas City University of Medicine and Bioscience

A passionate advocate for osteopathy, Dr. Bethel (St. Clair) is a member of the Sedgwick County Osteopathic Society and the Kansas Association of Osteopathic Medicine, where she serves on the executive committee. In addition, she is a FAA Senior Aviation Medical Examiner and a DOT National Certified Medical Examiner. Dr. Bethel (St. Clair) has been part of New Medical Health Care since 2006.

Lisa M. Harris, PA-C

Lisa holds degrees from Friends University and Wichita State University, and is a 2002 graduate of the Wichita State University Physician Assistant Program. Having been a part of New Medical Health Care since 2004, Lisa is also a member of AAPA, KAPA, and NCCPA. She is a board certified physician assistant and is also a DOT National Certified Medical Examiner.

Lisa M. Harris, PA-C
Dr. Nguyen

Thuy Nguyen, APRN-C

Thuy Nguyen is a board certified Nurse Practitioner and has her Bachelor and Graduate degrees from Wichita State University. She is board certified and a proud member of the American Association of Nurse Practitioners (AANP). Thuy is a DOT National Certified Examiner. She is bilingual and has been with New Medial Healthcare since 2015.

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