FitZone® Clinic
Functional & Lifestyle Medicine

Physician Experts in Functional & Lifestyle Medicine, Health, and Wellness






drfitzmeyer at



245 Riverside Ave., Jacksonville, FL, 32202

Be Our Subscribers

To get the latest news about health from our experts

Banner Image

Are you tired of being overweight, sick, and on pills? We can fix that.

We analyze your blood test labs and teach you how to correct abnormalities and get healthy.

Functional & Lifestyle Medicine Clinic in Jacksonville, FL

BOOK A FREE APPOINTMENT ← in-person or telemedicine

Lifestyle Medicine icons

Are you tired of being overweight, sick, and on pills? We can fix that.

At FitZone® Functional and Lifestyle Medicine Clinic, we understand the frustration that comes with feeling unhealthy and reliant on medication. That's why we're here to offer a different approach—a personalized approach that focuses on getting to the root of your health concerns and guiding you towards sustainable wellness.

We spend time with you.

Unlike traditional medical practices where appointments may feel rushed or impersonal, we prioritize spending quality time with each of our patients. During your consultations, we take the time to listen to your concerns, understand your health history, and conduct thorough assessments to tailor a plan specifically for you. Our clinicians are dedicated to providing the individualized attention and support you need to succeed on your journey to better health.

We teach you how to get healthy.

At FitZone®, we believe that true health is about more than just managing symptoms—it's about empowering you with the knowledge and tools to take control of your health for the long term. Through personalized nutritional therapy, lifestyle modifications, and educational resources, we guide you step-by-step on how to make sustainable changes that promote wellness from the inside out. Our goal is not just to treat your symptoms, but to equip you with the skills and understanding you need to thrive.

If you're ready to break free from the cycle of being overweight, sick, and reliant on medication, FitZone® Functional and Lifestyle Medicine Clinic is here to help. Schedule a consultation with us today and take the first step towards a healthier, happier you.

FitZone® Membership

Join Today
Initiation Fee: $50 | Monthly Fee: $50
  • No obligation, quit any time.
  • Weekly or biweekly check-ins
  • Telemedicine visits available
  • Personalized nutritional therapy consultation
  • Analysis of vital signs and provided blood work
  • Assessment of key ratios (waist to height, etc.)
  • Custom plan based on provided blood work
  • Tailored lifestyle modification plan
  • Access to educational materials and resources
  • Monthly progress tracking and follow-up sessions
  • Discounted rates for additional services


Functional & Lifestyle Medicine Doctors

Doctor Fitzmeyer headshot

Dr. Stephen Fitzmeyer, MD

Functional & Lifestyle Medicine Director

Diplomate, American Board of Lifestyle Medicine
Board Eligible Medical Informatics (Preventative Medicine) practitioner

Dr. Fitzmeyer was a Ruth L. Kirschstein NIH NRSA Informatics Postdoc Fellow at Boston University Medical Center and an Advanced Clinical Informatics Postdoc Fellow at the Boston VA Healthcare system. Dr. Fitzmeyer is the founder of Warp Core Health Venture Fund and Accelerator, Jax Code Academy, and FitZone®.

Doctor Mark LaFlamme headshot

Dr. Mark LaFlamme, MD MS

Clinical Director

Board Certified Internist
Board Eligible Medical Informatics (Preventative Medicine) practitioner

Dr. LaFlamme completed his fellowship in Medical Informatics at the Regenstrief Institute while receiving his Master's in Clinical Research. He has had multiple publications and presented at the Society of General Internal Medicine, the National Institutes of Health and the National Library of Medicine.

Doctor Sharon headshot

Dr. Sharon Lojun, MD MS

Women's Health Specialist

Surgeon/Gynecologic Oncologist
Board Eligible Medical Informatics (Preventative Medicine) practitioner

Dr. Lojun earned her M.D. from Cornell University Medical College. She was a National Library of Medicine Fellow at Harvard Medical School in Clinical Informatics and earned a Master’s degree in biomedical informatics at MIT. She is board certified in OB/GYN and Gynecological Oncology