About Us

About Trueline Health

Trueline Health is redefining primary care in Grand Rapids, MI, focusing on whole-health solutions that restore and optimize well-being, empowering older adults on medicare to achieve lasting health.
What We Believe
Our Mission
From sick care to health care
Trueline Health is redefining primary care by shifting the focus from reactive, disease-centered treatment to proactive, whole-person health. We integrate intelligent technologies with evidence-based lifestyle interventions to help patients achieve optimal health and resilience.
Our Vision
Be the Beacon of Scientific Health Creator.
We envision a future where healthcare is driven by science, compassion, and a commitment to lifelong vitality. Through data-informed care and a whole-health philosophy, Trueline Health strives to lead the way in transforming how care is delivered to older adults.
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About Our Founder & CEO
Founder & CEO: Nancy Tuohy
After more than 20 years working across both large healthcare systems and nimble startups, I came to a realization I could no longer ignore: primary care is broken. It’s reactive, disease-focused, and often fails to address the root causes of the chronic conditions that are overwhelming our communities.

As a daughter caring for aging parents and a mother raising two daughters, I saw firsthand how our healthcare system waits for people to get sick—then tries to manage the damage. But what if we flipped that model? What if primary care became the gatekeeper of health, not just the manager of disease?

For years, I hoped someone else would build this new model. I kept working, waiting, and watching. Then one day, while visiting a friend at a senior living community, I saw a woman crying. Her father, who no longer recognized her, had just been moved to a dementia unit. She was told there was nothing she could do. That moment broke something open in me.

There is something we can do. There are so many things we can do—through nutrition, sleep, movement, stress management, and mental and spiritual health—to preserve and even restore our well-being. That day, I stopped waiting. I decided to build the model myself.

It was the biggest decision of my life. But I wasn’t alone. Along the way, I met incredible, like-minded healthcare professionals who shared the same mission. Together, we founded Trueline Health—a new kind of primary care that empowers patients to take control of their health and live with vitality and purpose.

Welcome to Trueline. Let’s build a stronger, healthier you—together.
Meet our Dedicated Team of Healthcare Professionals
Our extended care team also includes experienced professionals in physical therapy, functional medicine, and lifestyle medicine who contribute to our integrative approach.
Chief of Physician Advisor Christopher Coller DO
Dr. Coller is a conventionally trained Osteopathic physician with expertise on how to maintain and improve health on a continual basis. He offers therapies to help patients beyond medications and procedures.
Barbara Radawski, PA-C
Barb is a Physician Assistant who, over 27 years, had the privilege of working in diverse areas of medicine including cardiology, gastroeneterology and hematology. She has a passion to improve the lives of Seniors beyond medication. By working collaboratively with individuals, her goal is to improve and maintain health and to support optimal wellness. In her free time, Barb enjoys spending time with her family. She also dedicates her time to community service through mentoring and volunteer leadership roles.
Bre Bock, MA, RD
Bre is a Registered Dietitian with more than 10 years of experience guiding individuals in managing their chronic health conditions and enhancing overall wellness. She helps patients tackle the key factors that support their health goals while empowering clients to build healthier relationships with what they eat. In her spare time, she enjoys gardening, traveling, and various forms of exercise.
Kristi Tuck, BS, CPT, MHC
Kristi is a passionate leader in the health and wellness space with 30+ years of experience enhancing the holistic health of a diverse group of clients. Her expertise combines management experience with clinical program development to deliver highly successful patient health outcomes for clients with chronic health conditions. As a master health coach and wellness professional, Kristi provides clients with the tools they need to reach and exceed their healthy lifestyle goals.
Karen Digby, NP
Karen Digby NP, is a highly experienced Gerontological Nurse Practitioner with a strong background in holistic health and  wellness and cognitive health.

Karen holds advanced degrees from the University of Michigan and NYU.  Her clinical experience spans Functional Medicine care services, work in PACE programs, skilled nursing facilities, as well as conventional ambulatory care.

She holds numerous certifications including Board Certified Gerontoligical Nurse Practitioner, Certified Applied Functional Medicine Practitioner, National Board Certifed Health and Wellness Coach, and Integrative Mental Health Professional.
Meet Our Team.
Dedicated professionals committed to restoring and optimizing health for every patient.

Our Clinical Leadership Team

Our Chief of Physician Advisor at Trueline Health

Christopher Coller, DO

Chief of Physician Advisor
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Our Admin Leadership Team

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Book 15-30 Minute
Free Consultation!
Let's talk about your Health!
We'll walk you through what we offer, answer your questions, and help you decide if our care model is the right fit for you—no pressure, just helpful guidance.
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Adult Care Services