
Meet Our Team
With Healthspan DPC, you have access to a dedicated care team that is focused on your well-being. Our focus is simple: provide healthcare that keeps you healthy. That means taking the time to understand your story, address concerns early, and build a plan that supports your goals.
Locally Rooted Care
We love being part of this community. We live here, we work here, and we’re committed to building a healthier Lewis County.
Aaron Neisen, DO MBA, Founding Physician

Dr. Neisen is a dedicated family medicine physician with a deep connection to northeast Missouri. He earned his undergraduate degree from Truman State University and his Doctor of Osteopathic Medicine degree from Kansas City University of Medicine and Biosciences (now KCU). During medical school, he also completed an MBA in Healthcare Leadership at Rockhurst University, showcasing his commitment to combining medical expertise with organizational and leadership skills.
Following medical school, Dr. Neisen completed a rigorous three-year Family Medicine residency at the University of Missouri-Kansas City. During this time, he began moonlighting in critical access emergency rooms throughout Missouri and Iowa, where he gained extensive experience managing acute and emergent patient care. Over five years, he amassed more than 13,000 patient care hours in emergency medicine, further solidifying his expertise in high-pressure environments.
Two years ago, Dr. Neisen returned to the clinic and hospital setting, bringing with him a wealth of diverse experience to provide comprehensive, patient-centered care. His broad skill set and dedication to serving rural communities continue to guide his practice as he balances his roles in clinical, inpatient, and emergency medicine.
Stephanie Neisen, MBA, Founding Member

Stephanie brings a diverse background in business, finance, and small business management to her role at Healthspan. She earned her undergraduate degree in Business Administration from the University of Missouri-Columbia before moving to Kansas City, where she began her career in the Loan Servicing division of KeyBank Real Estate Capital. While working full-time, Stephanie pursued and completed an MBA in Management from Rockhurst University, further enhancing her expertise in leadership and business strategy.
For the past six years, Stephanie has dedicated herself to raising her three young sons—ages six, five and three—while managing the family’s small businesses. Her combination of professional experience and personal commitment to family and community makes her an integral part of the Healthspan team.
Adrienn Myers-Woods, WHNP-BC

Adrienn Myers-Woods is a board-certified Women’s Health Nurse Practitioner with a passion for compassionate, evidence-based care across every season of a woman’s life. Born and raised in Lewis County, Adrienn earned her nursing degree from Truman State University in 2014 and went on to complete her nurse practitioner training at Vanderbilt University in 2016.
With nearly a decade of experience, Adrienn has walked alongside women through fertility journeys, birth control decisions, PCOS management, menopause transitions, and everyday gynecologic care. Her approach is rooted in education and respect—she believes every patient deserves a safe, judgment-free space to ask questions and feel heard.
Adrienn currently lives in Chicago with her husband and two young kids, but don’t worry–she’s still a loyal Cardinals fan at heart. She joins Healthspan one day a month to expand access to personalized women’s health care in our community.
Katherine Gillette, MA, LPC

Katherine brings a rich and varied background to Healthspan, shaped by decades of experience in education, crisis care, and mental health counseling. She began her professional journey teaching at the North Dakota School for the Deaf after earning her Bachelor of Arts in Elementary and Deaf Education from the University of Northern Colorado. But it was her deep care for people and their emotional well-being that eventually led her to complete a Master of Arts in Mental Health Counseling at Colorado Christian University.
Since 2015, Katherine has worked as a self-employed licensed professional counselor, offering clients a compassionate and grounded space to process life’s challenges. Her work has included serving as a program coordinator for the crisis stabilization unit at North Range Behavioral Health, where she supported individuals navigating acute mental health needs. Katherine is also a certified equine therapist through the Gestalt Equine Institute of the Rockies and has a special interest in combining traditional counseling with the healing presence of horses.
Whether she’s working one-on-one with clients or connecting with families, Katherine is known for her warmth, wisdom, and calm presence. She’s excited to bring her passion for mental health to Healthspan as part of our expanding commitment to whole-person care.
What is Direct Primary Care?
Direct Primary Care (DPC) is a different approach to healthcare.
Instead of billing insurance for each visit, patients pay a simple monthly membership. This allows us to:
- Spend more time with each patient
- Remove unnecessary barriers to care
- Focus on prevention and long-term health
- Be available when patients need us
At Healthspan DPC, that means:
- Longer visits (often 30-60 minutes)
- Direct communication with your provider (text, phone, telehealth)
- Fewer patients per provider
- More meaningful care
This model doesn’t just improve patient outcomes—it transforms the experience of practicing medicine.
Healthcare That Keeps You Healthy
Your healthspan is the portion of your life you spend in good health, free
from chronic diseases and thriving in your physical, mental, and social
well-being. This is much different than your lifespan, which is simply how
long you live and doesn’t consider the quality of your life.
At Healthspan DPC, we measure our success by your healthspan. Above
and beyond how long you live, we’re passionate about improving your
quality of life. This is only possible through proactive, patient-centered care.
Our entire team is dedicated to that mission.

