HFW Longevity is a clinician-led, telehealth-native practice for patients who have been dismissed, rushed, under-tested, or told their symptoms are “normal” while their energy, hormones, gut, metabolism, mood, focus, recovery, and quality of life keep declining.
Clinician-Led
100% Telehealth
Nationwide
HSA/FSA Accepted
24 pages on advanced testing, clinician-led protocols, and why strategy comes before any single compound.
Clinician-led care. Functional medicine strategy. Long-term optimization.
Christina Warner, APN, NP-C
Board-Certified Women’s Health Nurse Practitioner
Christina Warner brings 25 years of clinical experience and a deeply personal understanding of what it means to be dismissed by a system that does not always see the whole person.
Her work is shaped by her own experience with life-threatening postpartum heart failure and later uncovering Bartonella as a hidden driver behind neurocognitive symptoms affecting mood, memory, focus, and daily function.
Those experiences shaped her belief that the body cannot be treated in pieces.
Christina Warner, APN, NP-C
How Christina Thinks
HFW Longevity has completed Clinical Peptide Therapy Certification coursework through Peptide University as part of its commitment to safe, informed, clinician-guided peptide protocols.
You are not handed off. You are supported.
| Team Member | Role in Your Care |
|---|---|
|
Christina Warner, APN, NP-C |
Leads patient-centered hormone, women’s health, gut, chronic condition, and root-cause care with a deep focus on listening and clinical pattern recognition.
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|
Dr. Eric Landi, Founder |
Designs and oversees functional testing strategy, peptide therapy applications, metabolic optimization, gut-health protocols, and data-driven longevity planning.
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Dr. Saul Maslavi, MD |
Provides medical director oversight, physician-level clinical support, safety review, hormone and metabolic guidance, and longevity-focused medical direction.
|
 Scott M. Davis, CPA |
Leads the business and operational side of the practice — vendor and lab partnerships, sourcing standards for supplements and compounds, pricing transparency, and the infrastructure that supports your care. Non-clinical; does not participate in treatment decisions. |
Not a rushed visit. A long-term clinical relationship.
Correction comes before optimization.
At HFW, we evaluate health through nine interconnected categories:
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Trusted by 1000+ patients across USA
Stella Blanch Apo
It’s been a blessing working with Dr. Landi and his entire team! After getting my test results, Dr. Landi walked me through a number of helpful steps to restore my health. He is very knowledgeable and uses an in-depth functional medicine approach in addressing health concerns. Bernadette is also very kind and thoughtful and I enjoy the interpersonal connection I have built with all of them.
Chase Natale
Fatimah Fahmy
Lauren Griffith
Kevin Heckman
We are here to complete the picture.
Conventional medicine is essential for emergencies, acute care, major disease, and life-saving intervention.
But problem was that no one had looked deeply enough.
But many patients do not come to us because they have never seen a doctor.
A team that listens, tests, tracks, and adjusts.
| Conventional Weight Loss Care | HFW Longevity | |
|---|---|---|
Visit style |
Short appointments, one complaint at a time |
Comprehensive conversations about your full health story |
Lab philosophy |
Standard panels and population ranges |
Advanced testing, trends, symptoms, and functional patterns |
What you hear |
“Everything looks normal.” |
Let’s break this down and find out what your body is showing us. |
Approach |
Manage symptoms or wait for diagnosis |
Identify dysfunction early, correct the foundation, then optimize |
Testing |
Basic bloodwork |
GI-MAP, DUTCH, Metabolomix+, TruAge, food sensitivity, cortisol, custom bloodwork, and more when appropriate |
Treatment |
Generic medication or referral |
Personalized protocols, hormone support, supplements, peptides, bioregulators, nutrition, and lifestyle strategy |
Follow-up |
“Come back in six months.” |
Quarterly labs, regular reviews, symptom tracking, and protocol adjustments |
Goal |
Keep you out of disease range |
Improve how you feel, function, recover, perform, and age |
We review your symptoms, health history, goals, and concerns to determine the best next steps.
Advanced testing helps uncover the underlying factors affecting your health and identify where to focus first.
Your provider translates your results into a personalized roadmap with clear priorities and recommendations.
Your care plan focuses on addressing the underlying imbalances identified through your evaluation.
Your personalized plan may include nutrition, lifestyle strategies, supplements, medications, or advanced therapies when clinically appropriate, with ongoing monitoring.
Regular follow-ups, progress tracking, and plan adjustments help you sustain results and support long-term health.
| Traditional Office Visit | HFW Telehealth Model |
|---|---|
|
❗Drive, park, wait, repeat |
✅ Meet virtually from home |
|
❗One short visit |
✅ Structured consults and ongoing reviews |
|
❗Basic labs only |
✅ Advanced diagnostics shipped or coordinated |
|
❗Local access limits |
✅ Patients seen nationwide |
|
❗Reactive care |
✅ Proactive optimization |
|
❗“See you in six months” |
✅ Quarterly tracking and adjustments |
We do not do generic wellness. We build clinical strategies around your biology for longevity.
Real progress. Real support. No shame.
Stella Blanch Apo
It’s been a blessing working with Dr. Landi and his entire team! After getting my test results, Dr. Landi walked me through a number of helpful steps to restore my health. He is very knowledgeable and uses an in-depth functional medicine approach in addressing health concerns. Bernadette is also very kind and thoughtful and I enjoy the interpersonal connection I have built with all of them.
Chase Natale
Fatimah Fahmy
I have been working with Dr Landi for several months now. He is extremely knowledgeable, attentive and responsive. He actually listens which is rare in medicine these days. I’m excited to see what the results are from my protocol in a couple of months. Highly recommend his practice if you’re looking into functional medicine.
Lauren Griffith
Dr. Landi is highly knowledgeable and skilled in the field of functional medicine, but he also possesses a genuine empathy and compassion that is so often lacking in the traditional healthcare system. Dr. Landi connects to each of his patients on a personal level, works with you every step of the way, and makes you feel supported while navigating challenging health obstacles.
Kevin Heckman
I found out about the practice of Functional Dr’e last year and realized this is what I need! Finding Dr Landi so close to home was awesome. We appreciated his candor, knowledge and engaging personality. He exuded caring and interest in me and my situation. I feel he had repeatedly gone the extra mile for me so our collaboration is successful.
Not just appointments. A relationship with a team that tracks your biology over time.
HFW is clinician-led with physician medical direction. Dr. Saul Maslavi, MD is HFW’s Medical Director, a board-certified family medicine physician with more than 20 years of experience, providing medical direction, complex-case oversight, and clinical policy. Christina Warner, APN-C is an advanced care clinician and board-certified women’s health nurse practitioner with more than 20 years of experience, who conducts evaluations, reviews testing, develops and adjusts plans, and evaluates prescription eligibility within her licensed scope. Eric Landi, DC is co-founder and Functional Medicine Clinical Lead. Prescription decisions are evaluated and issued by an appropriately authorized HFW prescriber.
Advanced care clinician is HFW’s term for a qualified patient-facing clinical professional who evaluates patients, reviews testing, builds and adjusts care plans, and works within their licensed scope. It is not a way of blurring credentials. Each clinician’s actual license and role is listed on this page, and prescribing is done only by an appropriately authorized HFW prescriber.
Dr. Saul Maslavi, MD is HFW’s Medical Director and a physician with more than 20 years of experience. His role is primarily medical direction rather than routine patient visits. He oversees complex cases, supports clinical escalation and policy, and helps keep HFW’s longevity and optimization model connected to conventional medical safety.
No, and that distinction matters. HFW has a physician medical director, an advanced practice clinician who prescribes within her scope, a functional medicine clinical lead, a nonclinical accountability and habit coach, and a nonclinical Patient Success Coordinator. Each person’s role and scope is stated openly on this page so you know who is making which decision about your care.
Anthony Reyes is HFW’s Accountability and Habit Coach with more than two decades of experience as a trainer. He helps you build consistent habits around nutrition, exercise, sleep, and other clinician-approved priorities. He does not diagnose, interpret testing, prescribe, select therapies, change doses, or manage side effects. Clinical questions go back to your advanced care clinician.
Patient Success handles the nonclinical side of your experience: onboarding, testing logistics, scheduling, communication, navigation, and making sure nothing falls through the cracks. Patient Success can explain program structure, current written pricing, and what happens next. Patient Success does not interpret results, diagnose, recommend a therapy, promise eligibility, change a dose, or advise on side effects. Those questions are routed to a clinician.
Clinical questions, including symptoms, side effects, dose questions, and result interpretation, go to your advanced care clinician through HFW’s secure patient workflow. Scheduling, testing kits, shipping, billing, and general logistics go to Patient Success. Severe, rapidly worsening, or potentially life-threatening symptoms are a medical emergency and require emergency care, not a message.
HFW was created to serve the space between reactive sick care and product-first optimization. The founders saw that traditional care, while essential, often lacks the time and structure to help healthy people act proactively or to help patients whose symptoms do not fit a clear disease label. They also saw an optimization market that frequently sold peptides or medications before doing the work to determine whether those tools were appropriate for the individual. HFW was built around a different idea: know the patient, test when it can change a decision, identify real priorities, and use the least intervention reasonably necessary.
