| T&T Executive | Greece | | Greece |
| Tahe Fertilidad | Spain | Infertility treatment | Spain |
| Taipei Medical University - Shuang Ho Hospital | Taiwan | Cosmetic surgery, Infertility treatment, Surgery, Other services | Taiwan |
| Taipei Medical University Hospital | Taiwan, Korea | Cosmetic surgery, Infertility treatment, Surgery | Taiwan |
| Taipei Medical University-Wan Fang Hospital | Taiwan | Care of the elderly, CT and MRI scans, Dentistry, Drug and alcohol rehab, Hair transplantation, Infertility treatment, Surgery - Cosmetic and plastic, Surgery – Eye, Surgery – General, Surgery –... | Taiwan |
| Taj Medical Group Limited | India | Cosmetic surgery, Surgery | United Kingdom |
| Tanfer Clinic | Turkey | Dentistry | Turkey |
| Target Associates | India | Cosmetic surgery, Dentistry, Infertility treatment, Surgery, Other services | India |
| Taylor Orthodontics | USA | Dentistry | United States of America |
| Teneriffe Vet | | Surgery – General | Australia |
| Teneriffe Vet | | Surgery – General | Australia |
| Terme Selce | Croatia | Medical and health spas | Croatia |
| Thai Cosmetic Surger | Thailand | Cosmetic surgery | Thailand |
| Thai Medical Vacations | Thailand | | Thailand |
| Thai Surgery Travel | Thailand | Cosmetic surgery, Surgery | Thailand |
| Thailand Dental Center | Thailand | Dentistry | Thailand |
| Thailand for health care | Thailand | Dentistry, Infertility treatment, Surgery - Cosmetic and plastic, Surgery – General, Surgery – Gynaecology, Surgery – Heart, Surgery – Hip, Surgery - Knee, Surgery - Obesity, Surgery - Orthopaedic,... | Thailand |
| Thaimed International | Thailand | Cosmetic surgery | Thailand |
| Thalassaemia International Federation | Cyprus | Other services | Cyprus |
| Thantakit Dental Center | Thailand | Dentistry | Thailand |
| The Amar Clinic | Spain | Cosmetic surgery | Spain |
| The Barraquer Eye Centre | Spain | Surgery | Spain |
| The Budwig Center | Spain | Other services | Spain |
| The Centre for Assisted Fertilisation | Italy | Infertility treatment | Italy |
| The Clinic Finder | Worldwide | | United Kingdom |
| The Cyprus Institute of Neurology and Genetics | Cyprus | | Cyprus |
| The Dental Tourist | Croatia | Dentistry | United Kingdom |
| THE DENTIST | | Dentistry | India |
| The DENTISTS | Spain | Dentistry | Spain |
| The Fertility Institute of Murcia (IMFER) | Spain | Infertility treatment | Spain |
| The Flying Patient | Tunisia | Cosmetic surgery, Surgery | United Kingdom |
| The Fountain of Youth Clinic | Spain | Care of the elderly, Medical and health spas, Stem cell treatment | Spain |
| The Health Clinic | Estonia | Medical and health spas, Surgery - Cosmetic and plastic, Surgery – Eye, Surgery – Hip, Surgery - Knee, Surgery - Obesity, Surgery - Orthopaedic, Surgery - Shoulder | Estonia |
| The Human Reproduction Problems Clinic | Ukraine | Infertility treatment | Ukraine |
| The Implant and Oral Surgery Centre | Singapore | Surgery | Singapore |
| The Institute for Reproductive Medicine | Ukraine | Infertility treatment | Ukraine |
| The JetSet Patient, Inc | | Dentistry, Drug and alcohol rehab, Hair transplantation, Medical and health spas, Surgery - Cosmetic and plastic, Surgery – Eye, Surgery - Obesity | United States of America |
| The Karen Hospital | Kenya | Cosmetic surgery, Dentistry, Surgery, Other services | Kenya |
| The Lasik Travel Agency | Turkey | Surgery | Germany |
| The Lloyd Law Group PC | United States of America | Other services | United States of America |
| The London Clinic | United Kingdom | Cancer treatment, Care of the elderly, CT and MRI scans, Stem cell treatment, Surgery - Cosmetic and plastic, Surgery – Eye, Surgery – General, Surgery – Gynaecology, Surgery – Hip, Surgery - Knee,... | United Kingdom |
| The Masala Travel Company | India | Cosmetic surgery, Dentistry, Surgery, Other services | India |
| The Medical Park | India | Medical and health spas | India |
| The Medical Tourist Company | India, Cyprus, Poland, Singapore and Spain. | Dentistry | United Kingdom |
| The Medical Wellness Institute | Spain | Medical and health spas | Spain |
| The Nairobi Hospital | Kenya | Dentistry, Surgery, Other services | Kenya |
| THE NANEE SUITES | | | India |
| The Rudolfinerhaus | Austria | Surgery – General | Austria |
| The Rudolfinerhaus | Austria | Cancer treatment | Austria |
| The Scheye Group Ltd. | Latin America | Other services | United States of America |
| The Specialty Hospital | Jordan | Surgery - Cosmetic and plastic, Surgery – Gynaecology, Surgery – Heart, Surgery - Orthopaedic | Jordan |
| The Stay Inn | | | India |
| The Swiss Leading Hospitals | Switzerland | Surgery | Switzerland |
| The Vision Centers - Summerlin Vision Center | | Surgery – Eye | United States of America |
| Therapeutic Aids | India | Dentistry, Surgery | India |
| Thind Dental Clinic | India | Dentistry | India |
| Thomas Cook Overseas | Worldwide | | Egypt |
| Tibor Dental | Ireland | Dentistry | Ireland |
| Tibordental | Hungary | Dentistry | Ireland |
| TicketMed | Costa Rica, Germany, Hungary, India, Israel, Panama, Romania, Singapore, South Africa, Thailand | Cosmetic surgery, Obesity surgery, Surgery, Other services | United States of America |
| Tissu | Seychelles | | |
| TMC Fertility Centre | | Infertility treatment | Malaysia |
| Tokuda Hospital Sofia | Bulgaria | Surgery, Other services | Bulgaria |
| Toncic Cosmetic Surgery | Croatia | Cosmetic surgery | Croatia |
| Top Modern Dental Clinic | Dubai | Dentistry | United Arab Emirates |
| Top Tours | India | Cosmetic surgery, Dentistry | India |
| Touchdown Holidays | | | India |
| Tour2India4Health | India | Cosmetic surgery, Obesity surgery, Surgery | India |
| Tourism Research & Marketing | UK | | United Kingdom |
| Tourmedica.pl | | Cancer treatment, Care of the elderly, CT and MRI scans, Dentistry, Drug and alcohol rehab, Hair transplantation, Infertility treatment, Medical and health spas, Stem cell treatment, Surgery -... | Poland |
| TourMedical | Turkey | | Turkey |
| Tourmedical Cosmetic Dental Holidays | Turkey | Dentistry | Turkey |
| Tramazon SAC | | Dentistry, Surgery – General | Peru |
| Tranquil Beauty Changes | Thailand | Dentistry, Hair transplantation, Stem cell treatment, Surgery - Cosmetic and plastic, Surgery – Eye, Surgery – General | Australia |
| Transing d.o.o. | Croatia | Dentistry, Surgery - Cosmetic and plastic | Croatia |
| Transmed Hair and Cosmetic Surgery Clinic | | Hair transplantation, Surgery - Cosmetic and plastic | Turkey |
| Transmed Tourism LLC | USA and India | Cosmetic surgery, Dentistry, Obesity surgery, Surgery, Other services | India |
| Travel 2 Dentist | Hungary | Dentistry | United Kingdom |
| Travel For Care | Mexico | Surgery | Mexico |
| Travel India Co | India | | India |
| Travel To Health | Turkey | Cosmetic surgery, Dentistry | Turkey |
| Travel to Health | Turkey | Dentistry | Turkey |
| Travelite India | India | Medical and health spas | India |
| TravelMed | Hungary, Romania, Serbia | Surgery | United Kingdom |
| Treatment Assistance | | Cancer treatment, Care of the elderly, CT and MRI scans, Dentistry, Drug and alcohol rehab, Hair transplantation, Infertility treatment, Medical and health spas, Stem cell treatment, Surgery -... | India |
| Treatment Assistance | | | India |
| Trident Dental Clinic | Croatia | Dentistry | Croatia |
| Trident Dental Clinic | Romania | Dentistry | Romania |
| TRSC International Lasik Centre | Thailand | | |
| Tulip Dental Clinic | Egypt | Dentistry | Egypt |
| TURAMED GmbH | | Cancer treatment, Care of the elderly, CT and MRI scans, Dentistry, Drug and alcohol rehab, Hair transplantation, Infertility treatment, Medical and health spas, Stem cell treatment, Surgery -... | Germany |
| Turex Mediclean Care, Medical Tourism Agency in Costa Rica, Costa Rica | Turex Mediclean Care | | Costa Rica |
| Turismedic | Columbia | Cosmetic surgery, Surgery | Colombia |
| Turismo Dentale | Romania | Dentistry | Romania |
| Twin Deer Multi Activities Co Ltd | | | Sudan |
