Heal Your Body.
Balance Your Mind. Steady Your Soul.
Functional medicine that is rooted in science: Approaching health and vitality at the cellular level by measuring and correcting biochemical imbalances.
Functional medicine that goes deeper — addressing the root causes of illness, pain, and imbalance so you can reclaim your health and your life.
Hope. Healing. Wholeness.
Steadfast, root-cause functional medicine - helping you and your family restore energy, balance hormones, and feel well from the inside out.
Restore Your Peace. Reclaim Your Health.
What We Do
At Steadfast Functional Medicine, we help you uncover why you’re not feeling like yourself—so you can stop chasing symptoms and start healing at the root.
Through science-based functional medicine, we look at the full picture: nutrition, lifestyle, stress, environment, genetics, and how your body’s systems are working together. When appropriate, we use comprehensive lab testing to bring clarity. Then, we create a personalized plan that includes targeted nutrition, realistic lifestyle shifts, and high-quality supplements.
We listen deeply, walk alongside you, and equip you with the knowledge and support you need for lasting change—physically, emotionally, and spiritually.
Our goal: restore balance, build resilience, maintain hope, and help you experience greater vitality.
Why Patients Choose Us
Your healing is personal. Your care should be too.
Steadfast Functional Medicine is built on:
Integrity — honest, thoughtful care
Wisdom — discerning the right path forward to create a detailed and individualized plan
Science — science-based functional medicine integrating systems biology, genetics, environment, and lifestyle
Compassion — attentive, grace-filled partnership
Steadfast Commitment — thoroughness that honors that complexity of your health
This is health care the way it should be — personal, intentional, and deeply supportive.
Our Approach
A comprehensive, root-cause approach to whole-person healing.
Using a science-based functional medicine approach (with advanced testing when appropriate), we identify what’s driving your symptoms and create a personalized plan to help you heal.
Common areas we support include:
• Fatigue & brain fog
• Stress & sleep
• Hormones/metabolism/thyroid
• Gut health
• Mood & anxiety
• Immune/allergy concerns & inflammation (including autoimmune patterns)
Our goal: help you understand why you feel the way you do—and then help you heal.
Meet Dr. Kathryn Zika
MD, IFMCP, FMACP — Board-Certified Physician with additional certifications in Functional Medicine
Dr. Zika blends the depth of conventional medical training in pediatrics with the healing philosophy of functional medicine.
Her approach is gentle, thoughful, thorough, and deeply patient-focused.
With a unique background — including her life alongside a chiropractor husband — Dr. Zika is excited to use her training and life experiences to help patients restore and maintain good health.
Her mission is simple:
Help patients move toward a life that is whole, grounded, and healed from the inside out.
How to Get Started
Schedule a 20-minute Discovery Call
A simple, no-pressure conversation to understand your goals and see if we’re a good fit.
Initial Consultation (In-Person)
A deep dive into your symptoms, history, labs, lifestyle, and concerns.
Personalized Care Plan
A science-based, whole-person roadmap designed to give you an organized path for healing.
Frequently Asked Questions
Answers to common questions about Steadfast Functional Medicine
What is Functional Medicine?
Functional medicine is a patient-centered approach that looks for the root causes of illness rather than just managing symptoms. It considers your genetics, lifestyle, environment, stress, nutrition, and history to create a whole-person healing plan.
What conditions do you help with?
We support patients experiencing:
- Chronic fatigue or burnout
- Hormone and thyroid imbalances
- Digestive issues (IBS, bloating, gas, constipation, etc.)
- Autoimmune concerns
- Anxiety, mood changes, and stress-related symptoms
- Unexplained pain
- Chronic inflammation
- Long-term symptoms no one has been able to figure out
If you feel unwell and haven’t found answers, functional medicine may be a good fit.
What can I expect during my Discovery Call?
The 20-minute Discovery Call is a simple, no-pressure phone conversation.
Dr. Kate will:
- Listen to your main concerns
- Learn about your goals
- Determine whether functional medicine is the right approach
- Explain what working together looks like
This call is to help you feel confident about your next steps.
What happens during the Initial Consultation?
Your first visit is a deep dive into your:
- Health history
- Symptoms
- Lifestyle
- Stress levels
- Previous lab results
- Nutrition and sleep patterns
Dr. Kate will connect the dots, explain possible root causes, and outline the next steps in your care plan.
Do you offer virtual appointments?
Yes.
Follow-up visits can be done virtually or in-person based on your preference.
Initial consultations are done in-person to allow for the most accurate assessment.
How long will it take to see results?
Every patient is unique.
Some feel improvement within weeks, while others require more time depending on the depth of the issue.
Functional medicine focuses on true healing, not quick fixes.
Do you accept insurance?
Steadfast Functional Medicine is a cash-based practice.
This allows for longer, more personalized visits and comprehensive care without insurance limitations.
Upon request, we can provide a superbill that you may submit to your insurance for possible reimbursement, depending on your plan.
How do I schedule an appointment?
All appointments are scheduled through Practice Better, a secure patient portal.
You can begin by booking a Discovery Call directly through the website.
What should I bring to my first appointment?
Please bring:
- Any recent lab work
- A list of medications and supplements
- Your completed intake forms in Practice Better
- Notes about symptoms or patterns you’ve noticed
The more information you provide, the more personalized your care plan will be.
What makes Steadfast Functional Medicine different?
Dr. Kate combines:
- Conventional medical expertise (MD, board-certified pediatrician)
- Advanced functional medicine training (IFM Certified Practitioner)
- Whole-person, compassionate care
- A commitment to wisdom, science, and integrity
- A grace-filled environment where patients feel truly heard
You’re not just a set of symptoms — you’re a whole person.
What are your care packages?
Steadfast Functional Medicine offers three care packages designed to provide structured, ongoing support.
Patients discuss options during the Initial Consultation so they can choose the package that aligns with their goals and needs.
Do you work with children?
Yes.
Given Dr. Kate’s board certification in pediatrics, she is able to provide functional medicine support for children when appropriate.
Contact Us
Steadfast Functional Medicine PLLC
17652 Kenwood Trail
Lakeville, MN 55044