Transformative, evidence-based care for healthspan optimization
Because a happy, healthy life is more than just the absence of disease and disability
Jen Willems is a board-certified nurse practitioner with more than 20 years of experience across emergency, critical care and integrative medicine. She founded JW Precision Health to offer care that is both scientifically rigorous and deeply personal. Jen looks beyond symptoms and standard protocols to uncover and treat the real cause of your health concerns. Her approach blends the precision of conventional medicine with the insight of functional and integrative practices - because you shouldn't have to choose between evidence-based care and whole-person healing.
- Comprehensive diagnostic testing including: targeted blood panels, functional stool testing, dried urine panels, metabolic assessments, nutrient assessments, allergy & sensitivity, medical genetics
- Personalized treatment protocols: GLP-1 therapy, peptides, thyroid replacement, medical grade supplements, prescription medications, lifestyle modification with actionable plans
- Root-cause solutions for: fatigue, brain fog, weight struggles, digestive issues, hormonal imbalances for men and women, and mood disorders, immune and mitochondrial support
- Advanced diagnostic testing
- Personalized treatment protocols
- Root-cause health solutions
Advanced Diagnostics, Personalized Care
Our advanced diagnostic testing provides a clear, comprehensive picture of your health, allowing us to design treatment plans that are tailored specifically to you.
Our Healthcare Process
Experience our comprehensive approach to healthcare that combines thorough assessment with personalized treatment for optimal outcomes.
Comprehensive Intake, History and Physical
We begin with a thorough assessment of your complete health history, current symptoms, and comprehensive physical examination to understand your unique health profile.
Advanced Diagnostics
Utilizing both conventional and functional diagnostic testing when appropriate to uncover root causes and gain deeper insights into your health status.
Personalized Care Plan
Development of a customized treatment plan with clear, actionable steps tailored specifically to your needs, goals, and health conditions.
Follow-up
Ongoing monitoring and support with regular follow-up appointments to track progress, adjust treatments, and ensure optimal health outcomes.
What our patients say
Don't just take our word for it. Hear from patients who have transformed their health with our integrative approach.
"Working with Jen has changed my life. I've lost weight, have much more energy, and feel so much better overall. My husband became a patient too, and we determined similar thyroid and hormone issues with him. He's also lost weight and has more energy. Thanks, Jen, for the new lease on life you've provided us both."
Amy T
Patient since 2022
"To date, the work you did with me has been the most helpful I've experienced."
Deven
Patient since 2023
"I've been consistently impressed by Jen's thoughtful and thorough approach to women's health. She takes the time to dive deep into lab work and hormonal balance, addressing issues often overlooked in standard care. Thanks to her expertise, I found meaningful answers to health concerns that my primary care physician couldn't resolve. I highly recommend her to anyone seeking more personalized care."
Melissa
Wellness Member