See the full picture
Comprehensive history and purposeful testing reveal patterns that a routine visit may not have time to connect.
Personalized Precision Longevity Medicine
Invictus Longevity takes a comprehensive, root-cause approach to understand what may be limiting your energy, metabolism, hormones, body composition, performance, and long-term health.
Look Great. Feel Great. Be Great.
Feel Better. Function Better. Perform Better.
Why Invictus
A lab can be in range while you remain exhausted, gain weight, lose strength, or feel unlike yourself. “Normal” does not always explain what is optimal for you.
We look beyond isolated symptoms and blanket protocols. Your history, physiology, advanced biomarkers, body composition, lifestyle, medications, and goals are interpreted together—then translated into an individualized plan you can understand.
Comprehensive history and purposeful testing reveal patterns that a routine visit may not have time to connect.
We separate signal from noise and build a focused strategy around the highest-value opportunities.
Medical therapy, nutrition, supplementation, training, and lifestyle strategies are selected for your needs.
Follow-up and objective trends guide adjustment. Care is active, deliberate, and never set-and-forget.
When the usual answer is not enough
These concerns may have several contributing factors. The first step is understanding the pattern—not assuming there is one universal fix.
Areas of care
Care may draw from several disciplines, but every recommendation is organized around your priorities, clinical appropriateness, and measurable outcomes.
A comprehensive approach to male and female hormone health—considering symptoms, physiology, metabolic health, fertility goals, and long-term risk before therapy is recommended.
TRT · BHRT · Fertility-aware planning
Medical weight loss built around metabolic health, not the scale alone. When clinically appropriate, GLP-1/GIP therapy is paired with nutrition, protein targets, body-composition monitoring, and a plan to preserve lean mass.
GLP-1/GIP therapy · Lean-mass preservation · Monitoring
A deeper assessment of insulin resistance, advanced lipids, inflammation, vascular risk, and the modifiable factors that shape long-term health.
Advanced biomarkers · Risk reduction · Monitoring
A root-cause evaluation of the systems that may be contributing to fatigue, brain fog, digestive symptoms, inflammation, or reduced resilience.
Nutrients · Gut health · Environmental factors
Objective measurement of muscle, fat, and hydration—translated into practical targets for strength, recovery, and metabolic performance.
Body composition testing · Lean-mass strategy · Trend analysis
Peptide and advanced therapies, targeted mitochondrial support, and other cutting-edge small-molecule therapies may be considered when clinically appropriate, with individualized selection, transparent informed consent, and ongoing clinical oversight.
Individualized selection · Measured response
Your experience
The foundation of care is a two-visit process: a comprehensive intake and baseline evaluation, followed by a dedicated review that turns your findings into an individualized strategy.
We begin with your history, symptoms, prior testing, current treatments, goals, and the context conventional snapshots often miss.
Baseline and advanced testing are selected for you—not ordered as a one-size-fits-all panel.
A dedicated results visit turns isolated values into a coherent clinical picture and a prioritized strategy.
Your response is monitored through follow-up, repeat testing, and objective trends so the plan can evolve with you.
Longitudinal care
Your care evolves with you. We follow your progress over time, listen to how you are feeling and responding, and thoughtfully adjust your plan to support your changing needs and long-term goals.
How we practice
Every person is unique and deserves healthcare designed around their individual needs, priorities, and goals.
Recommendations begin with your health—not trends, quotas, or corporate influence.
Research matters. So do clinical context, biologic variation, patient preference, and honest uncertainty.
Benefits, limitations, alternatives, and the status of off-label or compounded therapies are discussed clearly.
You should understand your health, the purpose of your plan, and what progress actually looks like.
Founder
PA-C, MSPAS, ABAAHP, FLM
Board Certified in Anti-Aging Medicine and Fellowship-Trained in Longevity Medicine

Christopher R. Castellano, PA-C, MSPAS, ABAAHP, FLM, holds dual board certification: NCCPA Board Certification as a physician associate and board certification through the American Board of Anti-Aging Health Practitioners. He completed the Fellowship in Longevity Medicine through the American Academy of Anti-Aging Medicine, with advanced training in metabolic and longevity medicine.
His experience spans urgent care, internal medicine, sports medicine, pain management, medical weight management, hormone optimization, and longevity medicine. Across more than 15 years of practice, he has evaluated and treated more than 80,000 patients—experience that shaped a practical, deeply personalized approach to complex health concerns.
Christopher founded Invictus Longevity after recognizing a recurring gap in conventional healthcare: patients were often managing multiple diagnoses with multiple medications, yet many still did not feel or function at their best. He believed care should be more individualized—taking time to understand the whole person, investigate underlying contributors, and build a plan around each patient's physiology, history, priorities, and goals.
Invictus Longevity was created to provide personalized precision healthcare that supports both present-day function and long-term health. The practice seeks to identify modifiable risks and early changes before they progress, address underlying contributors when possible, and help reduce the likelihood or impact of future complications. His goal is not simply to add years to life, but to help patients remain healthier, more capable, and more functional throughout those years.
Christopher served as adjunct faculty for the Seton Hall University Physician Assistant Program and currently serves as an AAPA clinical preceptor. His work is grounded in rigorous evaluation, clear patient education, and the thoughtful integration of emerging therapies with established clinical care.
Recognition includes the AAPA Paragon Publishing Award, Seton Hall School of Health and Medical Sciences Community Service Award, and the NJSSPA/NJPAF Scholarship.
Patient experiences
Excerpts from publicly posted Healthgrades reviews. Reviewer names and dates have been omitted.
Read all reviews on HealthgradesHealthgrades review
“Christopher Castellano is hands down the most thorough provider I have ever seen. From the very first visit, he took my complaints seriously and really listened without rushing me. He was incredibly in-depth in his evaluation, asked detailed questions, and made sure every concern I had was addressed. What stood out most was that he didn't just offer a quick fix. He developed a clear plan, explained it thoroughly, and stayed committed to it. Because of his persistence and thoughtful approach, I am feeling better than I have ever felt before. No other doctor has taken the time or gone to the level of detail that he has. I highly recommend him to anyone looking for a provider who truly cares and delivers real results. Thank you Dr. Castellano!”
Healthgrades review
“Dr. Christopher Castellano was attentive, thoroughly listen to my complaints, dialed into the problem, and had a plan. After working with him for several months, I feel miraculously better despite multiple visits to other doctors who dismissed my complaints and said it was just old age and offered me nothing. Christopher went above and beyond to figure out the underlying cause. A bunch of treatment options that I've never heard of before and not only am I feeling much better, but my blood work improved! I am glad I found him. Grateful.”
Healthgrades review
“Chris Castellano is amazing. Never had such a wonderful experience at the doctors as I did here. Not only does he listen but he spends the time with you and addressed my concerns. He set up a plan and I'm starting to feel better than I've had in the longest time I can remember. Well worth the time and money. The most extensive treatment and testing I've had. Highly recommend.”
Healthgrades review
“Dr. Christopher Castellano, is absolutely the best. Very thorough, listens and actually seems to care about your health and tries to figure out what is wrong with you instead of just prescribing medications for symptoms. I've been to many other specialists and my primary doctor multiple times with the same complaints, but yet no one could address my issues somehow Dr. Castellano, is able to figure it out and get me headed in the right direction. Thank you Dr. Castellano. Highly recommend!”
Healthgrades review
“I have been seeing Chris Castellano for many years now and highly recommend him for any health issues you have. He has great bedside manner and is very easy to talk to.”
Healthgrades review
“I visited Chris for a routine physical and was amazed at the attention and care I received. Chris and I discussed all of my concerns at great length. He ordered a set of extensive labs to fully address my concerns. He spent a great deal of time reviewing my lab results and offered a list of vitamins and supplements to address my concerns. I'm already feeling better! The quality of care I received was exceptional! Chris will be my go to doctor from now on. I highly recommend him for all of your medical needs!”
Healthgrades review
“I've been to several doctors for my symptoms and they all told me I was fine put me on various medications that did not work and yet I still had symptoms. Luckily I saw Dr Castellano who actually listened to my complaints, performed extensive testing and ultimately diagnosed and treated me appropriately. My life has completely changed. My symptoms have resolved. It's been over 10 years of complaints to many doctors but they all told me I was fine and made me believe I was crazy. I owe my life changing treatment to Dr Castellano, thank you for actually listening to me and taking the time to figure out how to cure me. Highly recommend.”
Healthgrades review
“I can not say enough about Christopher Castellano, P.A.! He has been so thorough and informative regarding my recent health issues. I am so grateful for his compassion and commitment to helping me feel better. I have never felt rushed at any of my appointments, as Chris takes as much time that is needed to make sure everything has been explained and is understood. Thank you for all you do! Highly recommended!”
Healthgrades review
“Christopher Castellano PA-C is the most patient, knowledgeable, kind, and professional provider I have ever been treated by! I have gone to him several times over the last 5 years or so, and he always has the same calm demeanor and thorough approach. He makes sure I understand the diagnosis and medication instructions when necessary, and always follows up promptly with my lab results when they are taken. You can tell he is in the medical field for all the right reasons, he genuinely cares about helping people get better! I would highly recommend Mr. Castellano PA-C if you are looking for quality care.”
Healthgrades review
“Chris quickly assessed me. Urged me to go to the emergency department asap. He notified them that I was en route. I was in surgery at MMC 45 minutes later. Chris likely saved my life.”
Healthgrades review
“He is definitely the best provider I've seen. I've never met someone so thorough and ask such detailed questions. Dr. Castellano went above and beyond. He actually took my complains seriously and ordered a panel of comprehensive testing and looked at every lab detail and analyzed them based on my symptoms. Besides his outstanding bedside manner and being down to earth and being able to connect with patients instead of treating us like objects (like most doctors do), he is straightforward and tells it as it is, but not in an arrogant way. Highly recommend Dr. Castellano to friends and family. Thank you for all you've done for me!”
Healthgrades review
“I owe my life to this man. He knows his stuff. He is caring and compassionate. Very knowledgeable. So happy to see he was there today to help me!”
Healthgrades review
“One of a kind. PA Christopher Castellano is incredibly thorough and detail oriented. Love his approach to medicine. Instead just prescribing medication & leaving the room like most doctors, he actually takes the time to explain the reason why, side effects to look out for and what the next step should be. It's impossible to find this caliber of care these days. Couldn't have been more pleased with my visit.”
Healthgrades review
“Chris gives you his full attention leaving no stone unturned and is extremely knowledgeable because he does extensive research. Most providers rush to get the patient out but not him. Every question is answered every symptom is addressed and treated. Professional caring and empathetic. 100% recommended 5 stars.”
Healthgrades review
“Dr. Christopher Castellano was very thorough, kind, taking the time to listen to my concerns and order the right tests to get to the bottom of my issue. You can tell that he actually cares about your health. I highly recommend him.”
Healthgrades review
“He is exceptional in delivery of care....attentive, listens, compassionate and truly follows through. Thank you”
Healthgrades review
“Chris is knowledgeable practical and thorough. I am beyond satisfied with his care and treatment and follow up. He understood the situation, listened and used his medical knowledge to care for me the best way possible. I can't recommend him enough. Thank you to the staff and especially Chris Castellano for your services.”
Healthgrades review
“Outstanding provider. Thoroughly explains treatment plan and all available options. Great bedside manner. Honestly, he provided the best care I have ever received.”
Healthgrades review
“Dr Castellano saved my life. I owe him everything and can thank him a million times over. I came into the office and immediately Dr. Castellano saw me and told me I needed go to the ER. I actually refused to go but without asking he had EMS arrive and he eventually convinced me and I agreed to go by ambulance, looking back luckily I did or I would have been died. I was having a stroke and I didn't know it. I really thought he was taking the situation too serious, at first I didn't agree with him, but I now credit him with saving my life by springing into action as soon as I walked through the door, taking control of the situation and ultimately I'm still alive today because of Dr Castellano. I guess I should have trusted his medical judgement from the beginning and not questioned it because he was 100% correct in the end. Thank you Dr Castellano!”
Individual experiences vary. Testimonials do not guarantee that other patients will have the same or similar outcomes.
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