A healthspan doctor in Philadelphia is a physician (usually trained in internal medicine) whose practice is built around preventing the chronic diseases of late midlife rather than waiting to treat them. The work is anchored in advanced lab panels (ApoB, Lp(a), fasting insulin, hs-CRP, full thyroid, vitamin D), wearable and CGM data review, a 90-minute annual physical, and a plan you can follow. The substance lives in the labs you act on and the time spent reading them, rather than in supplements or marketing language.
You probably found this page because you have been reading Peter Attia, Outlive, Huberman, or just watching a parent age in a way you would rather avoid.
You are healthy enough. The standard annual physical comes back "normal" every year. And in the back of your mind there is a worry that will not go away: the 35-to-55 window is where the labs you act on compound, and a normal result can still hide something.
That is the question a healthspan doctor is supposed to answer. This page is the version we wish was online when our own patients were trying to tell a healthspan practice with substance from a wellness brand with a stethoscope.
What is a healthspan doctor?
A healthspan doctor is a physician whose practice is built around reducing the risk of the chronic diseases of late midlife earlier, rather than waiting to treat them after diagnosis. Healthspan (years lived in good function) is the outcome; Medicine 3.0 (data-driven prevention) is the method.
In practice that means:
- A 90-minute annual physical rather than the standard 12-minute visit.
- A lab panel built around the markers that predict events (ApoB, Lp(a), fasting insulin, hs-CRP, full thyroid, A1c, vitamin D, B12, ferritin) rather than the markers everyone runs by default.
- Wearable and CGM data read alongside the labs (Oura, Whoop, Apple Watch, Dexcom).
- A written plan with concrete next steps for sleep, training, nutrition, and risk reduction.
- Continuity, with the same physician reading your numbers in 2026, 2028, 2031.
What it does not mean: NAD drips, IV bars, or supplements and peptides sold as the main event rather than used as one tool among many.
What labs does a healthspan doctor run?
The labs that have the strongest evidence for changing the trajectory of cardiovascular and metabolic disease, run earlier than the standard guidelines suggest:
- ApoB (the lipoprotein particle count that predicts events better than LDL-C).
- Lp(a) (genetic, run once in a lifetime, drives a meaningful slice of early heart disease).
- Fasting insulin (moves years before A1c and is the earliest signal of metabolic drift).
- hs-CRP (systemic inflammation).
- Full thyroid (TSH, free T4, free T3, and TPO antibodies, rather than the TSH-only screen).
- Vitamin D, B12, ferritin (the boring deficiencies that slowly drive fatigue, mood, and recovery).
- Comprehensive metabolic and complete blood count (the foundation).
- Hormone panels when clinically relevant (testosterone with SHBG, full female-cycle panels in perimenopause).
A practice that runs only the standard insurance-covered screen is not doing healthspan work, even if the website says so.
How is this different from a longevity clinic?
We do the longevity work. We just do not stop there, and we do not hand the rest of you to someone else.
Fishtown Medicine
A 90-minute conversation with Dr. Ash. A written plan you can follow.
Hormones, peptides, supplements, advanced lipids, body composition: those are on the menu here, used when your numbers and your history call for them. The difference is what happens next. A longevity clinic that finds early metabolic drift sends you back to primary care for the basics, to an endocrinologist for the metabolic piece, and to a cardiologist for the cardiovascular one. We keep all of it in one place, with one physician, because the best longevity medicine is excellent primary care.
| Healthspan primary care | Longevity clinic | |
|---|---|---|
| Role | Your primary care doctor | A consultative second opinion |
| Scope | Acute care, chronic disease, prevention, and longevity | Optimization layer only |
| Frequency | Continuous relationship | Annual or twice-yearly |
| Insurance role | Insurance covers everything outside primary care | Often all cash, including labs |
| Longevity tools | Hormones, peptides, supplements, advanced lipids - on top of full primary care | The same tools, without the primary care underneath |
| Who handles the rest | The same physician | Referred out to your PCP and specialists |
| Cost | One flat membership (what it costs) | $5,000 to $30,000+ per year |
| Replaces your PCP | Yes | No |
A longevity clinic can be a useful annual deep-dive, and plenty of them do good work. What it cannot do is be there on the Tuesday you wake up with chest pain. The caution we would offer is about sequence rather than tools: peptides and hormone protocols before the basics are in order (sleep, training, nutrition, ApoB, glucose, sleep apnea screening) is building the second floor first.
What does a healthspan plan look like?
The output of a healthspan visit should be a written plan rather than a supplement list. It names:
- The 1 to 3 biggest risk levers in your numbers.
- What we are doing about each one, prioritized by impact and effort.
- What to retest, and when, so the plan has a feedback loop.
- What to ignore, equally important, so you do not chase markers that do not change outcomes.
A plan that does not name what to ignore is usually a marketing document.
How is Fishtown Medicine different?
We are a direct primary care practice. The healthspan work is the layer on top of full primary care: acute, chronic, preventive, and longevity-focused, all in one continuous relationship.
What that looks like in practice:
- A 90-minute annual physical with the labs above, read together, with no timer.
- Wearable and CGM data review as part of the conversation rather than a separate package.
- Direct text and video access with Dr. Ash between visits so the plan adapts as your numbers do.
- Same-day acute care so primary care does not break when life happens.
- No supplement sales as a revenue line. Our only charge is the flat membership fee, with nothing added on top of it, so we take nothing on supplements, labs, imaging, or medication. Every discount we negotiate reaches you at cost. What we recommend follows clinical judgment and your labs. The full disclosure is on our how we choose supplements page.
One flat membership covers it, and it is generally HSA / FSA eligible. What it costs is a page of its own, so nobody has to read a number in the middle of a paragraph about their heart. The free 20-minute call is the simplest way to see whether we add something to what you are already doing.
Scientific References
- Sniderman, A. D., et al. (2019). Apolipoprotein B Particles and Cardiovascular Disease: A Narrative Review. JAMA Cardiology, 4(12), 1287-1295.
- Tsimikas, S. (2017). A test in context: lipoprotein(a): diagnosis, prognosis, controversies, and emerging therapies. Journal of the American College of Cardiology, 69(6), 692-711.
- Crofts, C., et al. (2015). Hyperinsulinemia: a unifying theory of chronic disease? Diabesity, 1(4), 34.
Frequently Asked Questions
Common Questions
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