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Stefan Hartmann, PA-C
CEO Iron Direct Primary Care

@irondirectprimarycare on IG and Rumble. YouTube Iron Direct Primary Care 

Stefan Hartmann is German/American national raised by holistic parents where things such as Chinese Medicine, Tai-Chi and holistic approaches to healing were the mainstay. Stefan to this day has never been given an antibiotic and was not vaccinated until he had to go to university.

Since age seven he has trained in competitive tennis and competed for 8 years in European junior circuits. He moved to Florida at age 15 and continued on the USTA junior and men’s pro circuit. He has been a tennis coach since age 15 and has coached three high school tennis teams.

He attended the University of Central Florida where he brought the Club Tennis team to National Championships twice while working as an Emergency Department Scribe with the goal of practicing medicine one day. He graduated Magna Cum Laude with a Bachelors in Sports & Exercise Science in 2015. He continued working full time in the ER and immediately began work as a Master Trainer at LA Fitness. There he helped clients of all ages and abilities achieve their fitness goals through one-on-one personal training.

He then moved to Massachusetts and completed the Physician Assistant Program at Bay Path University 2016-2018. Since graduating he has worked in urgent care, internal medicine, spine surgery, interventional pain management, family medicine and psychiatry.

His various medical specialty experiences, background in sports & exercise science and relentless desire to understand how to achieve maximum vitality through nutrition, biohacking and more has given him a unique perspective into the human condition.

Patients deserve someone who will try to understand root cause and not just push a pill. Patients need someone who is in their corner focused on their health and studying their unique situation to create a plan to improve their life, and not just treat symptoms.

 Stefan constantly reads the research to bring you the latest data, theories, tips and studies so he can help you can make the right changes to reverse chronic disease and maximize longevity. His YouTube channel has hours of the latest literature summaries freely available.

Stefan is an advocate for medical freedom and has been on the frontlines treating covid since patient zero in Florida. He advocates for early treatment of covid-19 with ivermectin and the FLCCC protocol.

Stefan sees all ages from 1 year- to 100+

Logan Cahoon

Logan was born and raised in Melbourne and has a background in acute care medicine.  She completed her undergraduate education at the University of South Florida where she received a bachelor’s degree in Microbiology.  After graduating from USF, she left the US to spend a year living overseas doing humanitarian work in 11 different countries. After completing humanitarian work overseas, she completed her medical education at Bethel University in Paris, Tennessee, where she earned a Master’s Degree in Physician Assistant Studies, graduating at the top of her class.  In her free time, she enjoys going to the beach, team sports, exercising, traveling, cooking and spending time with friends and family. She is certified in Aesthetics: Botox & Filler and is leading the Aesthetics arm of the practice sees patients interested in cosmetic procedures.

Instagram: @theinjectionbabe

Instagram: @nutrient_denseeats

Contact: (321) 426- 0815

Outside of aesthetics, Logan sees only the salivary hormone one-time visits and blood analysis one-time visits. She is not accepting Direct Primary Care patients. 

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Dr. Matthew Tinney is a Doctor of Osteopathic Medicine. Board Certified by the American Osteopathic Board of Family Physicians and has completed the Advanced Fellowship of the American Academy of Anti-Aging Medicine. 

He is an integrative medicine practitioner with extensive experience in hospital emergency medicine and in the family practice and functional medicine setting. He has a focus on internal medicine, geriatrics, endocrinology and regenerative medicine. Proficient in on-site diagnosis, and minor surgical procedures. He is accessible and dedicated to patient care. 

Dr. Tinney has special knowledge and utilizes BHRT, pellets, ozone therapy, IV nutrition, peptides, platelet rich plasma (PRP) for human optimization. 

He is the perfect doctor for the complex patient suffering with autoimmune syndromes, mystery illnesses and the chronically ill.

He is a Lyme-Literate physician and treats EBV, vaccine injury, spikelopathy, mycotoxin illness, mitochondrial disease and more. 

He used to be a bodybuilder himself. He has detailed understanding of peptides, thyroid hormone, sex hormones and growth hormone.

Contact his secretary, Nannette or register today on his website! 

His LLC is Integrative Medicine of Brevard. And website is at

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Justin Chamberland, APRN
Founder of A2Z Wellness - DPC Pioneer
The Iron DPC Podcast host
Se habla Español

Justin Chamberland is a board-certified acute care nurse practitioner with over 20 years in the healthcare industry, focusing on the management of chronic disease with a functional medicine approach, which involves alternative therapies to increase quality of life. He  studied as a mechanical engineer undergraduate at the University of New Hampshire and Vermont, later pursuing nursing at the University of Central Florida and the University of Purdue Global.

NP Justin discovered his passion for healthcare while living overseas in Costa Rica and Nicaragua. During that time living internationally he was able to learn the importance of personalized healthcare focused on listening to patients.  Justin wants to engage clients in health promotion activities to increase mental well being and stress reduction. 

Justin and his wife, Janeth, live on Brevard County’s beautiful coastline where they have raised their son and two daughters.  Justin has continued as a nationally certified volunteer soccer coach as well as mentoring youth through action sports including the establishment of a global non-profit, “Ride Nature.”  In their spare time they enjoy hiking Florida’s trails and visiting Florida’s wonderful natural springs. 

Welcome to a new healthcare system that focuses on you!

Goal: maximizing health and decreasing risk related to chronic disease. At this practice we will offer proactive health screenings and personalized plans for your specific needs. We use modern lab work and health metrics to encourage best results.

Justin sees patients 13yrs+ and Spanish speaking. Accepting new patients.


(321) 722-7403

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