Natural Medicine • Advanced Diagnostics
Take Back Control
Of Your Health
Integrating the art and science of natural medicine with advanced diagnostics. Root-cause treatment, not symptom management.
60+
Years Combined Experience
16
Specialized Services
15+
Years in Practice
10
Expert Practitioners
Our Approach
Medicine With Integrity
At gatewaynaturalmedicine, each patient case is reviewed by our group of specialized practitioners for true medical integration. We pride ourselves in treating people fairly, honestly and with complete pricing transparency.
We do not recommend more supplements than are necessary or create goals that fill you with false hope. We will never run one more test or one less test than is needed. If it is important to you, it is important to us.
Learn more about us
What We Offer
Comprehensive Care Services
From advanced diagnostics to hands-on therapies, our intentionally assembled team provides truly integrated healthcare.
Internal Medicine
Root-cause diagnosis and treatment through advanced clinical diagnostics and functional medicine.
Laboratory & Diagnostics prasana
On-site specimen collection with access to advanced labs for comprehensive testing.
Chiropractic Care
Over 100 techniques and therapies tailored to patients of all ages, from babies to elderly.
Acupuncture
Powerful therapy for balancing energy flow, including motor point and therapeutic injection techniques.
Functional Neurology
Holistic mind and body treatment for ADD/ADHD, anxiety, depression, brain injuries and more.
Telehealth
Secure telemedicine appointments providing access to our team no matter where you are.
Patient Stories
Real Results, Real People
“Working with Dr. Brett has been a life-changing experience for me. I've been working with Dr. Brett for 3 months now and I feel so much better. I have energy, I feel alive, and I am motivated to do things besides just waiting until I can lay down again.”
— Casey
“Every time I'm at Gateway I feel respected and cared for. I get my doctor's full attention and don't feel rushed. Most of all I know that it's not just my symptoms that are being treated, but also my whole body.”
— Kasha
“The Drs at GNM discovered the real culprit to my high TSH level and cured it. They listened to my whole medical story and cared for me like a human being. They are what all medicine should be like!”
— Cassi, CO
“Dr. Brett is one of the best things that has ever happened to me! It has been two weeks and I am easily 85% better after a year and a half of suffering. I am SO blessed to have Dr. Brett helping me!”
— Alicia
Our Practitioners
An Intentionally Assembled Team
Each practitioner brings specialized expertise, collaborating on every patient case for true medical integration.
Dr. Brett Wisniewski
Clinic Director, DABCI, DACBN
Dr. Christine Hafer
DC, CACCP
Dr. Hayley Nick
DC, Birth Worker
Ashley Engler
Licensed Acupuncturist
Ready to Start Your Healing Journey?
Whether in-person at our Berthoud, CO clinic or via telehealth, we're here to listen — and you will be heard.