ABOUT US

New York's most trusted practice for peptide therapy, functional medicine, and testosterone replacement.

Here at Method Functional Medicine, we have helped hundreds of clients look and feel younger and healthier. From healing the root cause of issues like bloating, brain fog, and chronic disease, to improving energy & vitality, to anti-aging, weight loss, and muscle gains, we use evidence based, regenerative medical approaches to get the best results for our clients.

ABOUT US

New York's most trusted practice for peptide therapy, functional medicine, and testosterone replacement.

Here at Method Functional Medicine, we have helped hundreds of clients look and feel younger and healthier. From healing the root cause of issues like bloating, brain fog, and chronic disease, to improving energy & vitality, to anti-aging, weight loss, and muscle gains, we use evidence based, regenerative medical approaches to get the best results for our clients.

631-246-4687

Meet Randi Rasberry, PA-C

Randi Rasberry, PA-C, is the founder of Method Functional Medicine, a practice redefining integrative and regenerative care. With over a decade of clinical experience, Randi brings an elevated, precision-based approach to functional medicine, hormone optimization, and peptide therapy, bridging modern science with a refined understanding of the body’s innate capacity to heal.

Randi’s background spans traditional and functional medicine, allowing her to merge the diagnostic rigor of conventional practice with a systems-based approach rooted in cellular repair, longevity, and performance. Her expertise includes hormone restoration, gut and immune health, and the use of targeted peptides for metabolic, neurological, and regenerative support.

Known for a meticulous attention to detail and deeply personalized approach, Randi crafts care plans that are both art and science, each one designed to restore balance, optimize physiology, and enhance vitality at every stage of life. Her patients describe her care as transformative: data-driven yet intuitively guided.

At the heart of Method Functional Medicine is Randi’s belief that true wellness is not about chasing perfection, but about achieving alignment between energy, resilience, and purpose. Through thoughtful testing, advanced therapeutics, and individualized strategy, she empowers each patient to reach their highest potential.

Randi’s work has positioned her at the forefront of functional and regenerative medicine on Long Island, with a growing reputation for delivering exceptional outcomes.

Frequently Asked Questions

What is Functional Medicine?

Functional medicine is a personalized, root-cause approach to healthcare. Instead of treating symptoms, it looks deeper at hormones, metabolism, gut health, inflammation, stress, and nutrition to understand why you feel the way you do—and builds a targeted plan to restore balance.

What are peptides?

Peptides are short chains of amino acids that act as powerful signaling molecules in the body. They can support fat loss, energy, muscle recovery, sleep, immune health, skin rejuvenation, and longevity.

Do you take insurance?

No, we do not accept insurance.


However:


• All standard labs are coded for insurance when possible.
• Many functional tests (like Gut Zoomer, OAT, and Hormone Zoomer) may be eligible for FSA/HSA reimbursement.
• We provide transparent pricing so you know exactly what to expect.

How do I start?

Getting started is easy!

1. Review our membership options to see which path fits your goals. Our options include memberships for functional medicine. Peptide and hormone therapy are a la carte.

2. Book your initial consultation here.

3. Once we meet, we’ll build a personalized roadmap based on your symptoms, history, and goals.

© 2025 RR MGMT NY LLC d/b/a Method FM. All rights reserved.
Method FM is a licensed brand of RR MGMT NY LLC and operates under a management services agreement with Coller Medical NY PLLC, a licensed medical professional entity.


Privacy Policy & Terms of Use
By using this website, you acknowledge and agree that all medical services are provided solely by Coller Medical NY PLLC. RR MGMT NY LLC provides administrative and non-clinical services under the Method FM brand. Your personal information is handled in accordance with our Privacy Policy. Use of this site constitutes acceptance of our Terms & Conditions. No content on this site is intended as medical advice without a direct consultation.