The concierge medicine market has grown quickly, but the category can now mean different things depending on the practice. Some clinics offer a great care model: smaller panels, deeper clinical review, better coordination, and a physician who has time to get personal. Others look more like traditional primary care but with a membership fee attached. The difference is not always obvious from the website. This guide gives you a clinical framework for evaluating any concierge practice on the criteria that actually matter: diagnostic rigor, care architecture, and the physician relationship itself.
Reviewed for accuracy by Dr. Michael Billington, MD, Chief Science Officer
The most consequential variables are diagnostic depth, longitudinal tracking, care coordination, and physician panel size. Membership price is a weak proxy for any of them.
A serious practice goes beyond reactive care: it measures the right biomarkers at baseline, trends them over time, and builds a proactive plan around your specific risk profile, not a generic checklist.
Closed-loop care coordination, where referrals, lab results, and follow-ups are actively managed rather than left to the patient, is one of the clearest structural markers of a high-quality practice.
PrimaryMD was built around this kind of clinical architecture: smaller panels, comprehensive baseline testing, longitudinal review, and a dedicated care team responsible for follow-through.
Panel size is the structural variable that determines whether a concierge practice can actually deliver on its promises. A standard primary care physician in the U.S. manages between 1,500 and 2,500 patients while concierge practices typically cap panels between 150 and 600. Smaller panels create more time for longer visits, deeper familiarity with a patient's history, proactive follow-up, and ongoing care coordination. Panel size does not guarantee high-quality care, but it may set the ceiling on what is possible. Ask directly: "How many patients does my physician currently manage?".
Access and availability are the entry-level benefits of concierge medicine. The more meaningful differentiator is clinical depth: what does the practice actually measure, and what do they do with that data? A standard annual physical includes a basic metabolic panel, CBC, lipids, and perhaps a TSH, as a starting point. A serious concierge practice goes considerably further.
Depending on the patient, a serious baseline may include:
Advanced lipid markers: Not just LDL and HDL, but markers such as Lp(a) and ApoB, which can add important cardiovascular risk context beyond a standard lipid panel.
Inflammatory markers: hsCRP, homocysteine, and ferritin, which standard panels routinely omit.
Hormonal assessment when clinically appropriate: Thyroid and sex hormone testing may be useful when symptoms, history, or prior results point in that direction.
Metabolic depth: Fasting insulin, HbA1c, and HOMA-IR to assess insulin resistance before it becomes a clinical problem.
Body composition: DEXA scanning, which gives precise lean mass, fat mass, and bone density data that a scale or BMI cannot provide.
Functional fitness: VO₂ max testing, which can help establish a cardiorespiratory fitness baseline when interpreted in context.
The difference between a good and a great practice often comes down to what happens after the initial workup. Episodic testing gives you a snapshot. Longitudinal tracking, where the same biomarkers are measured at consistent intervals and trended over time, gives you a trajectory.
A question worth asking: "How do you track my results over time, and how do you use that data to adjust my care plan?" A vague answer here is a warning sign.
Every concierge practice promises "24/7 access" and "same-day appointments." What that means in practice varies considerably.
The questions worth asking are specific:
Question | What a Strong Answer Looks Like |
|---|---|
How do I reach my physician after hours? | Direct access to a physician-led care team with chart context, not a generic call center |
What is the typical response time for a non-urgent message? | Same business day, ideally within a few hours |
If my physician is unavailable, who covers? | A named colleague who has reviewed my chart, not a generic on-call doctor |
Can I be seen the same day for an acute issue? | Yes, as a structural norm, not a best-effort promise |
Are telehealth visits available for appropriate situations? | Yes, with the same physician, not a different provider |
The on-call coverage question is often overlooked. A solo concierge physician with 200 patients has a genuine coverage gap when traveling or ill. A practice with multiple physicians, structured coverage protocols, and shared medical records handles this far more reliably.
The test: Call the practice's main number after hours before you join. What happens? Who answers?
One of the most common failures in both traditional and concierge medicine is what happens after a referral or test result. The order gets placed, the result comes back somewhere, and the patient is left to chase the next step.
Closed-loop care is the structural solution: a model in which every referral, lab result, specialist recommendation, and follow-up action is tracked, confirmed, and integrated back into your primary care record. Nothing is considered complete until the loop is closed.
Ask the practice to walk you through what happens after they order a specialist referral:
Who confirms the appointment was scheduled?
Does the specialist’s report come back to your primary care physician?
Who reviews the report with you?
If the specialist recommends a medication change or more testing, who coordinates it?
A practice with genuine care coordination should answer these questions clearly. This matters most for patients managing complex conditions or doing serious preventive work across multiple domains. Fragmented information leads to fragmented care, even when the individual physicians are good.
The word “longevity” is now used to sell everything from serious preventive care to loosely justified protocols. A credible practice should be able to explain its approach in clinical terms.
The strongest longevity work usually starts with the basics. Be cautious with practices that lead with IV drips, NAD+ infusions, peptide protocols, or expensive panels without first doing a rigorous baseline assessment. Some interventions may have a role in selected patients. The concern is when they are sold as products before they are justified as medicine.
Ask:
What evidence supports this intervention for someone like me?
What result would make you recommend it?
What result would make you stop it?
Do you profit directly from the product or protocol you are recommending?
Dr. Takhar’s Buyer Beware talk on longevity medicine makes the core point well: longevity medicine includes real science and a significant amount of well-packaged noise. A serious practice should help you distinguish between the two.
Membership price is a weak proxy for clinical quality. A lower annual fee may look attractive until diagnostics, follow-up testing, care coordination, and after-hours access are billed separately. A higher fee may be better value if it includes the infrastructure required for proactive care.
Ask the practice to itemize what is included and what is not.
Are baseline diagnostics included, or billed separately?
Are follow-up biomarker draws included at regular intervals?
Does the practice actively manage referrals, records, results, and follow-up?
Does after-hours access connect you to a physician or care team with your chart?
The right comparison is It is the total annual cost of getting the level of care you actually expect.
The practice's infrastructure matters, but the physician relationship is what you'll actually experience.
Some questions to ask yourself:
Does the physician ask about your goals, not just your history? A physician must understand what you're optimizing for, not just what conditions you have.
Do they have a point of view? The best concierge physicians have clinical opinions and push back when appropriate, offer recommendations rather than just options.
How do they describe their approach to preventive care? Listen for specificity. "We establish your ApoB baseline, set a target, and adjust your plan at six-month intervals" is a clinical answer.
Do they communicate in clinical terms without being dismissive?
The practice’s infrastructure matters, but the physician is the standard of care you are actually choosing. Smaller panels, better access, and advanced diagnostics only matter if the doctor has the training, judgment, curiosity, and time to use them well.
Use the initial consultation to evaluate how the physician thinks. Do they ask about your goals, family history, symptoms, prior records, medications, lifestyle, and what has not been answered elsewhere? Do they explain their reasoning clearly? Are they willing to push back when a test, supplement, scan, or protocol is not clinically justified? Board certification matters, but it is only the starting point. It does not tell you whether a physician listens carefully, follows weak signals, or knows when more testing will create noise rather than clarity.
At PrimaryMD, this is a core part of the model. The practice is built around physicians with serious clinical training, smaller panels, longer visits, and enough time to understand the patient before deciding what to test. Dr. Sukhjit “Sarge” Takhar is board-certified in Internal Medicine, Emergency Medicine, and Infectious Disease. Dr. Michael Billington is board-certified in Emergency Medicine and Critical Care and serves on the faculty at Harvard Medical School and Brigham and Women’s Hospital. Good diagnostics begin with good physician questions; better care depends on careful listening, disciplined interpretation, and follow-through.
When assessing any concierge practice, these are the variables that separate genuinely high-quality care from a premium price tag on a conventional model.
Evaluation Criteria | Minimum Standard | High-Quality Benchmark |
|---|---|---|
Physician panel size | Under 400 patients | Often under 200 patients |
Baseline diagnostics | Standard labs + basic panel | Comprehensive baseline testing with clinical rationale |
Longitudinal tracking | Annual review | Quarterly or biannual biomarker trending |
Access model | Same-day appointments available | Clear response-time standard |
After-hours coverage | On-call service | Named colleague with chart access |
Care coordination | Referrals managed | Full closed-loop: referral, follow-up, result integration |
Prevention approach | Reactive to risk factors | Proactive protocol with individualized targets |
Fee transparency | Itemized on request | All-inclusive or clearly itemized upfront |
No practice will score perfectly across every dimension. The goal is to understand where a practice is strong, where it has gaps, and whether those gaps matter for your specific situation. A 45-year-old with a family history of cardiovascular disease should weight diagnostic depth and preventive protocols heavily. Someone primarily seeking access and convenience may prioritize panel size and response time. The most important thing is to ask specific questions and evaluate the specificity of the answers. Vague responses to concrete questions are informative in their own right.
Look beyond access and amenities. The most important factors are physician panel size, diagnostic depth, longitudinal tracking, care coordination, after-hours coverage, and the quality of the physician relationship. A strong concierge practice should be able to explain exactly how it tracks your health over time, follows up on results, coordinates referrals, and adjusts your care plan.
No. Membership price is a weak proxy for clinical quality. A lower-fee practice may become more expensive if advanced diagnostics, follow-up testing, urgent access, and care coordination are billed separately. A higher-fee practice may be better value if it includes the infrastructure required for proactive care. The right comparison is total annual cost of care, not just the headline membership fee.
Panel size determines how much time and attention a physician can realistically give each patient. Smaller panels make longer visits, deeper chart review, proactive follow-up, and real physician familiarity more possible. A practice can still fall short with a small panel if it lacks the right systems, but panel size is one of the clearest structural signals to ask about.
A serious practice should go beyond a basic annual physical when clinically appropriate. Depending on the patient, this may include advanced lipid testing, inflammatory markers, metabolic testing, hormone assessment, DEXA body composition scans, VO₂ max testing, and regular biomarker tracking over time. The key question is not only what the practice measures, but how the physician uses that data to guide decisions.
Closed-loop care means referrals, lab results, specialist recommendations, and follow-up actions are actively tracked until they are completed and integrated back into your care plan. This ensures that patients don't have to chase results, coordinate specialists, and connect information themselves. In a high-quality concierge practice,