Meet the APNS Team
APNS is supported by a dedicated team of advisors, technical specialists, legal counsel, and business development professionals united by a single mission: expanding access to high-quality, affordable care across the country.
Behind our clinical operations is a network of specialists who ensure that APNS Health functions with integrity, strategic clarity, and a long-term vision for sustainable growth. From legal and intellectual property matters to technology infrastructure, business development, and organizational partnerships, our support team brings the expertise needed to build something genuinely different in American healthcare.
We believe the future of healthcare requires not just great providers, but great institutions — and that starts with the people working behind the scenes to make this mission possible.
Medical Director
David Lehmann
David C. Lehmann, M.D. was the first of three boys born to Peggy and Charles who raised their family in a working class neighborhood in Philadelphia. Married for nearly 50 years, Dr. Lehmann’s parents stressed family values of honesty, integrity, education, and a hard day’s work to their children.
From an early age, Dr. Lehmann showed an intelligence beyond those of his peers. He began his academic career by earning his first bachelor’s degree at the prestigious Philadelphia Central High School. He then attended Temple University where he was elected to Phi Beta Kappa while still only a junior. He then graduated from Temple with a second bachelor’s degree Summa Cum Laude, and awarded the Otto Kushner Award in Science.
Dr. Lehmann continued his education at the Thomas Jefferson University Medical School, winning further academic awards in urology. He completed his residency at Lehigh Valley Hospital Center in Allentown, PA and became board certified in Internal Medicine. He then completed a three year fellowship at Episcopal Hospital in Philadelphia where he was published in several medical journals, and finally becoming board certified in cardiology.
Dr. Lehmann began practicing at Jeanes Hospital in Philadelphia, and eventually moved to Albert Einstein Medical Center in interventional cardiologist for 12 years. There he performed hundreds of cardiac caths, taught residents, and added to the hospital’s cardiology department.
He has since built a thriving private practice for the past 30 years known as Greater Philadelphia Cardiology Associates, and has privileges at multiple hospitals in Philadelphia.
He is revered as one of the most knowledgeable and experienced cardiologists in the greater Philadelphia area.
Clinical Content Developer
Caj Rohrer
Caj Rohrer, BSN, RN is a Clinical Content Developer with over 11 years of healthcare experience. He earned his Bachelor of Science in Nursing (BSN) from Arizona State University and is currently pursuing a Doctor of Nursing Practice (DNP) in Psychiatric-Mental Health at the University of Washington.Drawing from experience in both medical and behavioral health nursing, Caj develops evidence-based educational content that translates complex medical information into clear, accessible resources for patients and healthcare professionals. His background includes inpatient nursing, patient education, quality improvement, interdisciplinary collaboration, and the critical evaluation of clinical research and evidence-based practice guidelines. As a mentor to nursing students, he is passionate about advancing healthcare education and fostering the next generation of nurses.At APNS Health, Caj is committed to developing medically accurate, patient centered educational resources that reflect current standards of care, strengthen health literacy, and support informed healthcare decisions. His goal is to help ensure every resource empowers patients while upholding the organization’s commitment to high-quality, evidence-based care.
Web Engineer
Luke Sheaffer
Luke Sheaffer serves as Web Engineer at APNS Health, where he builds and maintains the practice’s web platforms and supports its technology infrastructure. He brings expertise in web development and site management, with experience building and maintaining platforms for clients across healthcare, finance, real estate, agriculture, manufacturing, and nonprofit sectors.
Luke holds a Bachelor of Applied Science (BAS) degree in Internet and Web Development from Arizona State University. In addition to his role at APNS Health, he supports technical and administrative functions for Another Way Holdings, the parent company of APNS, and is increasingly involved in the digital systems and vendor coordination behind APNS Health’s patient-facing presence.
Legal Consultant
J. Charles Coons
Charles Coons represents Another Way Holdings, the parent company of APNS. He focuses his legal practice on patent prosecution and counseling, advising his clients on intellectual property and cyber law matters. Charles is also an expert in copyright and trademark law, in addition to estate planning, asset protection, and probate.
Charles focuses on patent prosecution, IP counseling, and cyber law. He earned his B.S. from Brigham Young University and his J.D. from the William S. Boyd School of Law. After a decade as a senior engineer at AT&T, he registered as a patent attorney with the USPTO and has litigated over 150 federal copyright cases.