Dr. Kathryn Zika, MD, IFMCP, FMACP is a board-certified pediatrician and functional medicine physician who helps patients pursue healing with clarity, compassion, and a whole-person approach. She is an Institute for Functional Medicine Certified Practitioner (IFMCP), having completed rigorous training learning standards in functional medicine education, assessment and clinical application.

Her years in pediatrics gave her deep respect for strong clinical medicine and evidence-based care. But over time—through her work as a physician during the pandemic and her own personal health journey after a car accident—Dr. Zika began to see what so many patients experience: sometimes the standard model doesn’t go far enough. Symptoms are addressed, but the “why” is missed. And patients are often left feeling unheard, rushed, or stuck.

That’s what drew her to functional medicine.

After becoming a functional medicine patient herself, Dr. Zika began formal training in 2022 and completed certification through the Institute for Functional Medicine and the Functional Medicine Academy in 2005. She founded Steadfast Functional Medicine with a simple mission: to help patients move toward a life that is whole, grounded, and healed from the inside out—by identifying root causes, rebuilding foundational health, and creating a plan that fits the real life of the person in front of her.

What it’s like to work with Dr. Zika

Dr. Zika's style is thoughtful and practical. She takes time to listen, connect patterns, and guide patients step-by-step—so they not only understand what’s happening in their body, but also feel confident in what to do next. Care is personalized, focused on long-term resilience, and designed to reduce future risk—not just chase symptoms.

Life beyond the clinic

Outside of medicine, Dr. Zika is passionate about her faith, fitness, and quality time with her family. She and her husband, Dr. Jacob Zika, share a commitment to lifelong learning in health and serving people with a shared philosophy: "the needs of the patient come first." Their marriage and household represent a unique blend of both conventional and holistic perspectives, where daily conversations about health bring in distinct but complimentary healing professions. Together, their highest calling is raising their three children to be good stewards of their bodies, minds, and spirits.

Dr. Zika also enjoys challenging workouts, nature walks, music, traveling, and shopping/interior design with her daughter. She serves in her church’s children’s ministry and loves cheering on her kids from the sidelines.