See how your GP
ranks on endometriosis.

In simple terms: to show you how long you are likely to wait, and whether somewhere nearby is quicker.

Endometriosis cannot be diagnosed by a GP. It usually needs a laparoscopy, which means a hospital, which means a waiting list.

How long that list is depends almost entirely on which hospital you are sent to. Between the fastest and slowest hospitals in England, the gap is nearly fivefold.

Most women are referred to their nearest hospital without ever being told there is a choice. There is.

This site takes your postcode and shows you every hospital near you, how long each one is taking, which have specialist endometriosis centres, and what your local GP surgeries prescribe.

All of it is published by the NHS and its partners. None of it is ours.

• Waiting times come from NHS England's Referral to Treatment data, published monthly. We use gynaecology (treatment function code C_502), incomplete pathways, which means women currently waiting rather than women already treated.
• Specialist centres come from the British Society for Gynaecological Endoscopy, which accredits units for severe endometriosis surgery.
• GP prescribing comes from NHS Business Services Authority data, via OpenPrescribing.
• Hospital details come from the NHS Organisation Data Service.

The information is public but scattered across four sources and hard to read. We put it in one place and make it searchable.

Yes.

Diagnosis is rarely the end of it. Endometriosis is a long-term condition, and most women need ongoing care, repeat appointments, and sometimes further surgery.

Every one of those is another referral, and every referral is another choice you are entitled to make.

The specialist centre list matters here too. Severe endometriosis surgery is complex, and the accredited centres are the units that do it regularly. The nearest hospital is not always one of them.

By median wait, in weeks, for gynaecology.

The NHS publishes how many women are waiting at each hospital, broken into one-week bands. The median is the point where half have waited less and half have waited longer.

Two deliberate decisions about that:

1. We only suggest a hospital as an alternative if at least 1,000 women are waiting there. Every NHS trust bar four is above that. No independent hospital is. Comparing a teaching hospital with a small private unit's selected list is not a fair comparison, so we do not make one.
2. Hospitals with fewer than 250 women waiting are labelled. A median drawn from a handful of patients tells you almost nothing.

The median is accurate to the whole week. A figure of 12.5 weeks means somewhere in week 13, not 12 weeks and 3 days.

Yes. In England, in most cases, it is a legal right.

The NHS puts it plainly: if a GP needs to refer you, in most cases you have the legal right to choose the hospital or service you would like to go to. It does not have to be the nearest one, and it does not have to be in your area.

The exceptions are emergency care and members of the armed forces.

Ask at the point of referral. Once a referral has been made it is more awkward to change, though still possible.

Because some NHS-funded care is delivered by independent hospitals, and you can be referred to them on the NHS at no cost to you.

Of the 201 providers in our data, 120 are NHS trusts and 81 are independent. We label every one of them so you always know which you are looking at.

They are not always quicker. Two independent hospitals are among the worst performers in the country: one has the slowest median wait of any provider with a substantial list, and another has the highest proportion of women waiting more than a year.

We show them because "there is an NHS-funded private hospital near you with a shorter wait" is genuinely useful. We do not let them top the rankings on a small caseload.

It counts dienogest, the drug licensed in the UK specifically for endometriosis, over the last twelve months, next to what is typical for a surgery of that size.

Two in five surgeries in England prescribed none of it at all last year.

Be careful what you read into that. A low number can mean a surgery that refers women promptly and lets the hospital take over prescribing, which is good practice. It can also mean women being managed on the pill and painkillers for years without investigation, which is the pattern behind the nine-year diagnosis figure.

The data cannot tell those two apart, and neither can we. We show you the number and leave the conclusion to you. It is a question worth asking, not an answer.

Endo Lottery is owned and operated by Menopause Data Ltd, an independent data and research company based in Somerset.

We built HRT Lottery first, which does the same job for menopause care and HRT prescribing across every GP surgery in England.

The pattern turned out to be the same here. Care that is supposed to be uniform is not, the differences are large, and the data proving it is public but unreadable.

We take public data and make it usable. That is the whole of it.

Waiting times are published monthly by NHS England, usually about six weeks after the month they cover. We update when they do.

The figures on this site are June 2026, the latest available.

Specialist centres and GP prescribing are refreshed alongside them.

Not for waiting times, no. Referral to Treatment data is England only. Scotland, Wales and Northern Ireland publish their own figures in different formats, and we have not built those in yet.

Specialist centres do cover all four nations, and the Republic of Ireland, because the BSGE accredits across all of them.

If you enter a postcode outside England you will still get the centre list, and the site will tell you the hospital figures are English.