Dr Stavy · Patient information
Choosing a Functional Medicine Practitioner
When choosing a functional medicine practitioner, check the person's professional role and registration, then compare the actual care being offered. A training certificate, a long appointment or positive reviews cannot establish that every proposed test or treatment is useful. Ask who will assess you, what they can do and how they handle limits and referrals.

How can you check professional registration?
Ask for the person's full name, role and registration details. Then check the register run by the relevant regulator. Do not rely only on a logo on a website. The GMC register is the place to check a doctor. The HCPC has a register for the professions it regulates. Make sure you have found the right person and that the role matches the service being offered. [2] [3]
Check that you have the correct person and the correct profession. Similar names can cause confusion. If a provider uses the title doctor, ask what qualification and clinical role that title refers to. The word alone does not tell you the scope of the visit you are buying.
For a doctor, review the registration details and any relevant GP or specialist-register details. Do not assume specialist status from an area of interest described on a website. The register and the service description answer related but different questions. [2]
Registration is a useful starting check, not proof that every planned approach is suitable. You still need a clear account of the review, evidence and responsibility for care. A practitioner should be willing to explain where their own role ends and when another service is needed.
What does a functional-medicine qualification tell you?
A course certificate tells you about a piece of training. It does not, on its own, tell you the person's full professional role. Ask who issued it and what the course covered. Also check the person's main qualification and registration. You need to know how the training fits the work they plan to do for you. A list of initials is not enough to answer that question.
Avoid comparing lists of initials as though their length measures clinical suitability. The useful question is if the person you see has the training, experience and permitted scope to assess the problem you want help with. A clear account is more informative than a collection of unexplained titles.
Ask if a stated credential is a professional registration, an academic qualification, a course certificate or membership of an organisation. These categories are not interchangeable. If a website blurs them together, request clarification before relying on the claim.
The What Is Functional Medicine? Evidence, Principles and Limits guide explains the principles and limits of functional medicine. You can use it to frame questions about what a provider means by the term. The label should not be used to exempt a test or treatment from the need for suitable evidence.
How do scope, prescribing and referral differ?
The functional-medicine label does not tell you who can prescribe or diagnose. Different people have different roles. Ask what the service includes and who does each part. If you need a medicine review, who will do it? If a specialist is needed, what happens next? These are useful questions before you book. They help you choose a service that can deal with the concern you have.
If you already have a diagnosis or prescription, explain that at the enquiry stage. Ask how the person you see will work with the clinician in charge of your existing care. A plan that depends on stopping established treatment needs careful medical review, not a general assurance that the new approach is natural.
Ask what happens if you need care they cannot offer. Who would they refer you to? What if a test finds a problem that needs prompt care? You also need to know who to call if you feel worse between visits. Get clear answers before you book.
| Area to compare | Question worth asking |
|---|---|
| Professional role | Who will assess me, and where can I verify their registration? |
| Clinical scope | Which parts of my concern can this practitioner assess or treat? |
| Prescribing | Who makes medicine decisions and takes responsibility for monitoring? |
| Referral | What happens if I need a different clinician or urgent assessment? |
What should a provider explain about evidence and tests?
Ask why each test or treatment is being suggested. You should know what it aims to find out or help with. A report can contain many pages of data and still add little to care. Ask what would change if the result were different. Also ask about limits and risks. The reason for the test matters more than the size of the panel or the detail in its charts.
Separate evidence for a method from evidence for a whole package. A study of a food change, for example, does not by itself validate every test and supplement sold alongside it. Ask which part of the programme the cited research actually supports.
Be cautious about claims to find the root cause of every symptom, reverse a wide range of diseases or guarantee results. You can ask what is still unclear and how the person you see would respond if the first explanation were wrong. A sound plan leaves room for review. It also allows for other possible causes.
Ask if existing results can be reviewed before new tests are ordered. If a panel is presented as compulsory, ask why each part is needed. Also ask if the provider benefits financially from the laboratory or products being recommended and how that relationship is explained.
How can you compare the full cost and follow-up?
Ask about the full cost, not just the price of the first visit. What does that fee cover? Will there be a written plan? Is help with results included? Do follow-up visits, tests or products cost extra? Check whether you are expected to buy from a particular supplier. You should be able to compare the whole offer before deciding how much care to commit to.
Ask what happens after the first visit. Who answers questions about the plan? How are results communicated? When would another visit be useful? A promise of continuity should be translated into practical arrangements you can understand before paying for a package.
Read booking and cancellation terms and ask about anything unclear. If you feel pressured to commit immediately, you can take time to review the details. A care decision should not depend on a sales countdown or on fear that you will miss a unique chance to address your health.
For Dr Stavy, use Dr Stavy: Medical Background, 20 Years’ Experience and Clinical Approach to read about the doctor and Functional Medicine Doctor in London to see what a visit involves. Confirm the current fee and what it includes for the visit you need. These pages can support comparison. But they should not be treated as a substitute for clarifying your own circumstances.
What ca reviews tell you, and what can they not prove?
Reviews can tell you what a visit felt like. They may describe booking, listening or how well things were explained. They cannot prove that a treatment caused a health change. Nor can they tell you what result you will get. A person may have used several forms of care at once. A short review rarely gives enough detail to sort out which part, if any, caused an improvement.
Look for practical details that matter to you, such as if explanations were clear or booking arrangements were understood. Keep that separate from evidence about tests and treatments. A high rating is not a clinical trial. And a single result is not a guarantee.
If a provider uses a case story, ask what it illustrates. An account can show a person's experience without proving a general success rate. Be especially cautious when a story is used to justify stopping established care or purchasing a large package before any review.
Before deciding, write down the answers you have and the questions still open. Compare the providers on the same points: role, scope, evidence, costs and responsibility. Choose a service because it can explain how it addresses your need, including its limits, rather than because it makes the largest promise.
Your priorities belong in the conversation
Bring the question that matters to you, the care you already receive and any practical limits a new plan needs to respect.
Read patient reviews on Google. Reviews describe individual experiences; they do not establish treatment effectiveness or predict your outcome.

Common questions
Does a functional-medicine certificate make someone a medical doctor?
Do not treat an extra training certificate as evidence of medical registration. Ask for the person's underlying professional qualification and check the right regulator's register. Then make clear the scope of the visit they offer. A course title and a legal clinical role are different kinds of details. [2]
Where can I check a doctor's registration?
Use the GMC's own register and search by the person's name or reference number. Make sure the entry is for the correct person and review the right registration details. If a specialist or GP role is claimed, check the suitable register details rather than inferring them from a website biography. [2]
Should every practitioner be able to prescribe?
No. Prescribing authority depends on the person's professional role and qualifications, not the functional-medicine label. Ask if prescribing forms part of the service and who takes responsibility for treatment and monitoring. You may need a different clinician for a medicine decision even if another practitioner gives supportive advice.
Are expensive tests a sign of better care?
Cost and detail do not show clinical value. Ask what question a test answers, how the result would change the plan and if existing details could be used first. Also make clear interpretation and follow-up costs so that you can judge the complete offer rather than the report's appearance.
Can patient reviews prove a treatment works?
Reviews can describe personal experiences. But they cannot reliably show treatment effectiveness or predict your result. Keep comments about communication and service separate from clinical evidence. If a review is used to support a medical claim, ask for suitable research on the actual approach and outcome being planned.
What should I ask before committing to a package?
Ask who will give each part, what is included, what costs extra and how the plan will be reviewed. Make clear cancellation terms, result handling and referral boundaries. You should understand the reason for tests and products before committing. And you can take time to consider the details supplied.
Choose your next step
Contact the practice to clarify the appropriate appointment and its cost.
Sources and further reading
- NHS: When to call 999. Accessed 2 October 2026.
- GMC: Search the medical registers. Accessed 2 October 2026.
- HCPC: Check the Register. Accessed 2 October 2026.