List of Health Websites
Hospitals, clinics, pharmacies, medical publishers, public health agencies, wellness brands and fitness apps. This page shows how many health domains we track, who leads, and how the list breaks down.
How many health websites are there?
Across over 120 million categorized domains, 7,431,659 carry the Health & Medicine category. That makes health one of the largest subjects on the web, close in size to shopping.
Almost every clinic, practice and pharmacy runs a site, which is why the category is so big. Add wellness brands, fitness studios and supplement shops, and health touches nearly every town and every market in the data.
All health domains
Every domain where health or medicine is part of what the site covers.
Health first
Domains where health is the main subject. Health sites rarely mix in other topics, so strict and broad lists are close.
Popular health sites
Health domains among the 300,000 most popular sites, or 5.9% of the popular web.
.health domains
Domains on the .health ending, of which 7,923 carry Health & Medicine.
Why health is huge in the long tail: dentists, physiotherapists, opticians, care homes and local practices each have their own small site. Few are famous, but together they make up millions of domains.
Top 10 health websites
The leading health websites in our data, ranked by popularity among real users. They fall into three groups: medical information publishers, public health services and pharmacy chains. Booking and mental health platforms complete the list, a sign of how much care now starts online.
Below the top 10 come national online pharmacies in India, Brazil and Eastern Europe, doctor booking platforms, drug reference sites and government health insurance portals. Several of these lead their own country by a wide margin.
Medical publishers likely rank high because many people look up symptoms before they see a doctor. Pharmacies benefit from repeat orders, and public services are the official source in their country.
Types of health websites in the list
Health & Medicine covers very different organisations. These are the main groups, and what helps you tell them apart in the data.
Hospitals and health systems
Hospital groups and university clinics. Usually the Healthcare Industry tier and a high country popularity band.
Practices and clinics
GPs, dentists, physiotherapists and specialists. The largest group by count, mostly in the long tail.
Pharmacies
Chains and online pharmacies. They carry Pharmaceutical Drugs and often Shopping as a second category.
Medical publishers
Health libraries, symptom guides and medical news. They hold most places in the global top 10.
Public health bodies
National health services, public insurers and health agencies. Many also carry Government & Legal.
Booking and telehealth
Appointment platforms and online consultation services, with strong national leaders in Europe and Asia.
Wellness and supplements
Wellbeing brands, supplement shops and alternative medicine. Mostly Healthy Living tiers.
Mental health services
Therapy platforms, counselling directories and support groups, tagged with the Mental Health tier.
Health subcategories: medical vs healthy living
The IAB Content Taxonomy splits health into two Tier 1 subjects. Medical Health covers conditions and treatment; Healthy Living covers prevention, fitness and wellbeing. Counts are for the full database, IAB version 3.
Medical Health: 3,425,783
Healthy Living: 2,993,231
What popular health sites cover
Among the 17,598 popular health domains, these deeper subjects lead. They show where attention goes.
| Subject | Popular domains | Typical sites |
|---|---|---|
| Diseases and Conditions | 3,368 | Symptom guides, specialist clinics, patient groups |
| Wellness | 1,612 | Wellbeing content, spas, supplements |
| Healthcare Industry | 1,281 | Hospitals, health systems, medical suppliers |
| Pharmaceutical Drugs | 856 | Pharmacies, drug references, manufacturers |
| Nutrition | 729 | Diet advice, food and health publishers |
| Alternative Medicine | 718 | Herbal, homeopathy and holistic practices |
| Cosmetic Medical Services | 496 | Aesthetic clinics, dermatology |
| Fitness and Exercise | 418 | Training apps, gyms, workout content |
| Mental Health | 285 | Therapy platforms, counselling, information |
| Health Insurance | 258 | Insurers and public insurance funds |
See the full tree on the taxonomy page. Sector views are on healthcare domains, pharmaceuticals domains and mental health domains.
Health websites by country
Of the 17,598 popular health domains, 11,623 have a country assigned. Health care is organised nationally, so most health sites serve one country. These are the ten largest shares.
Full database by domain ending
| Ending | Health & Medicine domains |
|---|---|
| .com | 3,447,415 |
| .de | 855,102 |
| .org | 321,913 |
| .uk | 242,508 |
| .net | 188,451 |
| .fr | 184,414 |
| .ch | 159,543 |
| .nl | 154,100 |
Germany stands out: .de holds more than 855,000 health domains, a sign of the many independent practices, therapists and pharmacies with their own sites. Switzerland and the Netherlands also hold large health counts for their size, with more than 150,000 health domains each.
See Germany domains and Switzerland domains for the wider picture.
Popularity bands of health websites
Health is the most long-tailed category on this page. Very few health sites reach global scale; most serve a city or a region.
| Global popularity band | Popular health domains | Typical sites |
|---|---|---|
| Top 1,000 | 6 | The largest medical publishers and public health services |
| 1,001 to 5,000 | 56 | Pharmacy chains, booking platforms, national services |
| 5,001 to 10,000 | 88 | Drug references, insurers, big hospital groups |
| 10,001 to 50,000 | 1,005 | Hospitals, national pharmacies, health apps |
| 50,001 to 100,000 | 1,313 | Regional health systems, specialist publishers |
| 100,001 to 500,000 | 13,793 | Clinics, practices, wellness brands |
| 500,001 to 1,000,000 | 1,337 | Small practices and local services |
Compare this with news: news has 104 domains in the global top 1,000 of our popular set, health has 6. People read news every day, while many visit health sites only when they need care.
Who buys a list of health websites, and why
Health lists support selling into health care, advertising around it carefully, and keeping people safe from fake health offers.
Healthtech sales teams
Find clinics, practices and hospital groups by specialty and country, then size the market. See medical devices domains for a related view.
Pharma and consumer health marketers
Plan contextual campaigns on health publishers. Health advertising is regulated in many countries, so check the current rules for each market.
Privacy and compliance teams
Visits to health sites can reveal health information, which data protection laws such as the GDPR treat as a special category. See privacy compliance.
Adtech platforms
Flag health supply as sensitive so it can be handled under stricter targeting rules. See brand safety advertising.
Security and trust teams
Fake pharmacies and miracle cure shops sit close to real health sites. A clean health list is a baseline for spotting them.
Fitness and wellness brands
Find partners, publishers and competitors in fitness, nutrition and wellbeing. See fitness and wellness domains.
Insurers
Map providers, clinics and health services in each market for partner and network planning.
Researchers
Study how health information spreads online, compare countries, or track the growth of telehealth and mental health services.
Columns included in the health list
Each health domain comes with every field in the database, one row per domain, as CSV, Parquet or JSON. The examples are real rows.
| Field | mayoclinic.org | healthline.com |
|---|---|---|
| IAB v2 Tier 1 to 4 | Medical Health > Diseases and Conditions | Medical Health > Diseases and Conditions |
| IAB v3 Tier 1 to 4 | Medical Health > Diseases and Conditions | Medical Health > Diseases and Conditions |
| Web filtering categories | Health & Medicine | Food & Drink, Health & Medicine |
| Audience personas | Typical visitor profiles | Typical visitor profiles |
| Country | United States | Not assigned |
| Global popularity band | 1,001 to 5,000 | 1,001 to 5,000 |
| Country popularity band | Top 1,000 in its country | Not assigned |
The second category on healthline.com reflects its large nutrition section. Several ranked categories per domain let you keep such sites in a health list and in a food list at the same time. Look up any site in the domain checker.
Questions buyers ask about health lists
Health data raises more questions than most categories. These are the ones we hear most often.
Does the list contain patient data?
No. It describes websites, not people. Each row is a domain with its categories, country and popularity band.
Can I find one specialty?
Yes, through the deeper IAB tiers, such as dental health, mental health, cosmetic medicine or surgery.
Are fake pharmacies in the list?
Sites are categorized by what they show. Combine the list with domain age and popularity bands to spot doubtful shops.
What about beauty clinics?
Aesthetic clinics carry Cosmetic Medical Services. Beauty product shops carry Style & Fashion tiers instead, so they can be kept apart.
Is veterinary care included?
Vet clinics are often found under Pets & Animals, a separate category. Add it if your list should cover animal health.
Can I check one site first?
Yes. The domain checker shows the categories and tiers of any site before you design your filters.
How to build the health list you need
A good health list depends on the job. These steps cover the most common choices.
Medical or wellness. Choose Medical Health tiers for care providers and medical content, Healthy Living for fitness, nutrition and wellbeing, or both.
Pick specialties. Use tiers such as Pharmaceutical Drugs, Surgery, Cosmetic Medical Services or Mental Health to target one field.
Set the market. Filter by country and domain ending. Health care is national, so country lists are usually the right unit.
Separate shops. Pharmacies and supplement stores also carry Shopping. Keep them for retail work, drop them for clinical lists.
Decide on sensitive topics. Illegal Drugs is its own category with 72,622 domains and is never part of the health list unless you add it.
Tier by reach. Use popularity bands to split national services and big publishers from local practices.
Health and its neighbouring categories
| Category | Domains | Add it when |
|---|---|---|
| Food & Drink | 2,001,271 | Your list covers nutrition and diet publishers |
| Sports & Recreation | 2,872,482 | You also want gyms, sports clubs and training |
| Pets & Animals | 841,514 | Veterinary care belongs in your scope |
| Personal Finance > Insurance (IAB) | 475,487 | You map health insurers next to providers |
| Alcohol | 555,410 | Rarely: mainly to exclude from health campaigns |
Three health list recipes
German practices and clinics
Health & Medicine as main subject, country Germany or the .de ending, Shopping removed, popularity band below 100,000. A prospect list for practice software.
US health publishers
Medical Health tiers, country United States, global band up to 50,000, pharmacies removed. A base for contextual health campaigns under your own policy.
Mental health services worldwide
The Mental Health tier plus Health & Medicine, all countries. Useful for researchers and for platforms that route sensitive content.
Sensitive by default: many ad platforms and privacy teams treat every health site as sensitive. Keeping the health list in your stack makes those rules simple to apply, whether you want to reach health readers or protect them.
Two taxonomies, one file: the IAB tiers and the web filtering categories sit side by side, so the same list serves ad platforms and network filters. More on dual taxonomy categorization.
Keeping the health list current
Practices open, merge into groups and change names. New health apps and telehealth services launch every week.
Daily new domains
About 300,000 newly registered domains are categorized every day, including new clinics, apps and health shops.
Week and month checks
Each new domain is checked again after a week and a month, because many practice sites launch with one page.
Monthly refresh
All other domains are refreshed monthly, so closed practices and expired shops leave the list.
Parked domains flagged
When a practice closes and its domain turns into a parked page, it moves to the Parked / For-Sale category and out of your health list.
Health care changes slowly at the top and quickly at the bottom. National services and big publishers stay stable for years, while practices, wellness shops and health apps come and go.
Regular refreshes matter most for the long tail, which is exactly where most of the 7.4 million health domains sit.
Read more on coverage and freshness.
Health website list FAQ
How many health websites are there?
Our database of over 120 million categorized domains contains 7,431,659 domains with the Health & Medicine category. For 7,114,790 of them, health is the main subject of the site.
What are the most popular health websites?
Ranked by popularity among real users: mayoclinic.org, healthline.com, nhs.uk, walgreens.com, cvs.com, doctolib.fr, cdc.gov, psychologytoday.com, webmd.com and medicalnewstoday.com.
Can I separate medical sites from wellness and fitness?
Yes. The IAB tiers separate Medical Health subjects such as diseases, drugs and surgery from Healthy Living subjects such as wellness, fitness and nutrition.
Does the health list include pharmacies?
Yes. Online pharmacies and drugstore chains carry Health & Medicine, often together with Shopping, and the Pharmaceutical Drugs tier marks sites about medicines.
Who buys lists of health websites?
Healthtech and pharma marketing teams, insurers, adtech platforms that handle sensitive categories, privacy and compliance teams, security teams watching fake pharmacies, and health researchers.
Can I get only hospitals?
Yes, as a close filter. Combine Health & Medicine with the Healthcare Industry tier and a higher country popularity band, then review the result for your definition of a hospital.
Does the list include fitness apps and gyms?
Yes. They carry Healthy Living tiers such as Fitness and Exercise, and often Sports & Recreation as well. Include or exclude them with one filter.
Is this the same as the healthcare industry page?
No. The healthcare domains page describes the sector. This page covers the list itself: counts, leaders, subcategories, fields and filters.
How do I get the full list of health websites?
The full list is part of the licensed database. See the pricing page for database sizes and licence options.
Get the full list of health websites
All 7.4 million health and medicine domains with IAB medical and wellness tiers, country, popularity bands and the lookup API.
IAB and the IAB Content Taxonomy are trademarks of the Interactive Advertising Bureau, used here only to identify the taxonomy. Website names belong to their owners and are listed only to describe our data.
URL Categorization Database is not affiliated with, sponsored or endorsed by any of them. This page describes data, not medical advice.