Jacksonville Beach, Florida  •  Opening Late 2026

Root-cause medicine for
those who want to flourish

Functional medicine, hormone optimization, and longevity care rooted in faith, science, and a deep commitment to your whole health.  •  Opening Late 2026

Join the Waitlist Explore Services

Where faith, science, and radiance meet.

Katie Keller, PA-C

Meet Your Provider

Eight years at Mayo Clinic.
A lifetime of purpose.

Katie Keller, PA-C brings a rare combination to functional medicine: eight years of clinical experience in hematology and oncology survivorship at Mayo Clinic Florida, grounded in a deep personal calling to help people thrive — not just survive.

At Light & Longevity, Katie partners with patients to uncover the root causes of chronic GI symptoms, metabolic dysfunction, hormonal imbalance, chronic fatigue, and post-cancer health challenges — and builds a personalized roadmap to lasting vitality.

8 Years — Hematology & Oncology Survivorship, Mayo Clinic Florida
PA-C — NCCPA Certified Physician Assistant
IFM Functional Medicine Certification (in progress, 2026)
Certified Injector — Neuromodulators (Botox)
B.S. Exercise Science — University of Pittsburgh
NCAA Soccer — University of Pittsburgh
Supervising Physician: Cassaundra Thompson, DO

Our Philosophy

Medicine that honors the whole person

We believe healthcare should ask why — not just what. Every symptom has a story. Our role is to listen deeply, look comprehensively, and partner with you to build health that lasts for decades, not just days.

Root-Cause

We investigate the why behind your symptoms, not just mask them. True healing begins with understanding.

Longevity

We think in decades. Our protocols are designed for sustainable vitality — energy, clarity, and confidence at every stage.

Faith

This practice is rooted in purpose and stewardship — serving others with excellence and compassion.

Relationship

Unhurried, personalized, trust-based care. You are known here — not just a chart number.

Opening October 2026

Be among the first to
experience Light & Longevity

Join our waitlist and receive early access, a discounted first consultation, and our monthly wellness newsletter.

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Find Us

Jacksonville Beach, Florida

Address

Jacksonville Beach, FL
Brick-and-mortar location — coming soon

Contact

katiekeller@lightandlongevitywellness.com
Telehealth available across Florida

Supervising Physician

Cassaundra Thompson, DO

Jacksonville Beach, FL
Map available upon address confirmation