Worldwide ranking · 2026

Best oncology & cancer clinics, ranked worldwide

Ratings updated 13 October 2026

Cancer diagnosis, chemotherapy, radiotherapy and surgical oncology — ranked on one transparent GCR Rating, highest first.

136clinics ranked

66,347data points scored

Ranked by GCR Rating (out of 5). No stars, no review counts — one fair number per facility.

Compiled independently by GCR since 2012 from verified patient reviews — no clinic can pay to change its Rating. Most recent verified review: October 2026. How this data is verified →

GCR ranks 136 oncology & cancer clinics across 11 countries.
Each clinic's GCR Rating is computed from verified patient reviews using a Bayesian model that weighs rating, review volume and recency — not a simple average.
Clinics with fewer verified reviews are pulled toward the oncology & cancer specialty-wide average rather than excluded, so any clinic with verified reviews can be ranked.
Rankings are refreshed on a regular cycle as new verified reviews come in.

GCR ranking of oncology & cancer facilities by GCR Rating, highest first
Rank	Clinic Name	Country	City	GCR Rating
1	Vejthani International Hospital	Thailand	Bangkok	4.893
2	Bangkok International Hospital	Thailand	Bangkok	4.868
3	The Brooklyn Cancer Center	United States	Kings County	4.814
4	Samitivej Sukhumvit Hospital	Thailand	Bangkok	4.791
5	Bangkok Cancer Hospital Wattanosoth	Thailand	Bangkok	4.764
6	Oklahoma Cancer Specialists and Research Institute	United States	Tulsa	4.760
7	Globalmedik	Turkey	Istanbul	4.721
8	Bangkok Hospital	Thailand	Bangkok	4.695
9	Roswell Park Comprehensive Cancer Center	United States	Buffalo	4.691
10	Dr. Eugene Rent	United Arab Emirates	Dubai	4.681
11	Golden State Cancer Center	United States	Los Angeles	4.674
12	Oncólogo en Aguascalientes - Dr. Raúl Alejandro López Saucedo	Mexico	Aguascalientes	4.616
13	Dr. med. Daniela Grenacher-Horn	Germany	Munchen	4.605
14	Europäisches Radiochirurgie Centrum München	Germany	Munchen	4.586
15	Burjeel Cancer Institute	United Arab Emirates	Abu Dhabi	4.524
16	Namarak Hospital	Thailand	Bangkok	4.503
17	Národný onkologický ústav	Slovakia	Bratislava	4.498
18	German Cancer Research Center	Germany	Heidelberg	4.497
19	Royal Marsden Hospital - Sutton	United Kingdom	London	4.486
20	Hope4Cancer	Mexico	Tijuana	4.455
21	UT Southwestern Moncrief Cancer Institute	United States	Fort Worth	4.425
22	National Cancer Research Center	Spain	Madrid	4.422
23	Advanced Care Oncology Center	United Arab Emirates	Dubai	4.414
24	Dr Sadir Juma Alrawi	United Arab Emirates	Dubai	4.402
25	UCH Macmillan Cancer Centre	United Kingdom	London	4.330
26	Oncological Institute of St. Elizabeth	Slovakia	Bratislava	4.322
27	Oasis of Hope Hospital	Mexico	Tijuana	4.310
28	MD Anderson Cancer Center Madrid	Spain	Madrid	4.309
29	National Center for Tumor Diseases - NCT	Germany	Heidelberg	4.275
30	VHIO Vall d'Hebron Institut d’Oncologia	Spain	Barcelona	4.271
31	The National Cancer Institute	Mexico	Mexico City	4.262
32	The Christie NHS Foundation Trust	United Kingdom	Manchester	4.244
33	Guy's NHS Cancer Centre	United Kingdom	London	4.198
34	Gulf International Cancer Center	United Arab Emirates	Abu Dhabi	4.184
35	Centro Médico	Guatemala	Guatemala City	4.184
36	Immunity Therapy Center	Mexico	Tijuana	4.182
37	INCAN	Guatemala	Guatemala City	4.160
38	Memorial Sloan Kettering Cancer Center New York - Main Hospital	United States	New York	4.151
39	Anadolu Sağlık Merkezi Hastanesi	Turkey	Gebze	4.149
40	The Royal Marsden Hospital	United Kingdom	London	4.142
41	Bangkok Cancer Specialized Hospital	Thailand	Bangkok	4.138
42	IVO. Instituto Valenciano de Oncología	Spain	Valencia	4.108
43	Centro de Patología de la Mama - Fundación Tejerina	Spain	Madrid	4.101
44	Prof. Dr. Serkan Keskin / Onkoloji	Turkey	Istanbul	4.097
45	UT MD Anderson Cancer Center	United States	Houston	4.072
46	Dr. Cem Yılmaz Meme Cerrahisi - İstanbul Breast Center	Turkey	Istanbul	4.060
47	Istanbul Oncology Hospital	Turkey	Istanbul	4.013
48	Bumrungrad International Hospital	Thailand	Bangkok	3.953
49	Beatson West of Scotland Cancer Centre	United Kingdom	Glasgow	3.914
50	Safe Group Plastic & Urology Surgery Clinic	Turkey	Istanbul	3.882
51	Medicana International Ankara Hastanesi Cyberknife Radyocerrahi Merkezi	Turkey	Ankara	3.882
52	Healthway Cancer Care Hospital	Philippines	Taguig	3.848
53	Moffitt Magnolia Campus	United States	Tampa	3.826
54	Mammacentrum sv.Agáty ProCare	Slovakia	Banska Bystrica	3.747
55	Florida Cancer Specialists & Research Institute	United States	Bradenton	3.702
56	Fred & Pamela Buffett Cancer Center - Nebraska Medical Center	United States	Omaha	3.642
57	Dr. Mohanad Diab, Cancer.Immunotherapy,Targeted,Chemotherapy,Latest,Cancer treatments	United Arab Emirates	Abu Dhabi	3.485
58	Východoslovenský onkologický ústav, a.s.	Slovakia	Kosice	3.473
59	Oncology Clinic at Loyola Heights	Philippines	Quezon City	3.232
60	Florida Cancer Specialists & Research Institute	United States	Tampa	3.222
61	Hyperthermie Zentrum Hannover	Germany	Hannover	3.166
62	Edificio Sixtino 1	Guatemala	Guatemala City	3.166
63	ION Kids	Mexico	Guadalajara	3.141
64	Dr Roshan Koshy Jacob,Consultant Medical oncology/Haematology, NMC Royal Hospital Sharjah,Best oncologist/Haematologist	United Arab Emirates	Sharjah	3.102
65	Arcadia Praxisklinik	Germany	Bad Emstal	3.046
66	Arden Cancer Research Centre	United Kingdom	West Midlands	2.939
67	Hospital Herrera Llerandi	Guatemala	Guatemala City	2.878
68	Comprehensive Cancer Center CLARA CAMPAL	Spain	Madrid	2.637
69	Best Cancer Hospital in Turkey	Turkey	Istanbul	not enough data
70	LOC part of HCA Healthcare UK	United Kingdom	London	not enough data
71	The Cancer Centre	United Kingdom	Eaglestone	not enough data
72	Icon Cancer Centre London	United Kingdom	London	not enough data
73	Mount Vernon Cancer Centre	United Kingdom	Northwood	not enough data
74	Oncology Centre	United Kingdom	Gloucestershire	not enough data
75	Guy's Cancer at QMH	United Kingdom	London	not enough data
76	Cancer Centre	United Kingdom	West Midlands	not enough data
77	Sharp Memorial Hospital Laurel Amtower Cancer Institute and Neuro-Oncology Center	United States	San Diego	not enough data
78	Hallwang Clinic GmbH	Germany	Dornstetten	not enough data
79	Charité Comprehensive Cancer Center	Germany	Berlin	not enough data
80	Hallwang Private Oncology Clinic	Germany	Dornstetten	not enough data
81	UKD - TUD - HZDR	Germany	Dresden	not enough data
82	Comprehensive Cancer Center CCCLMU - Cancer Center Munich	Germany	Munchen	not enough data
83	Outdoor Against Cancer gGmbH	Germany	Munchen	not enough data
84	Veramed Clinic at Wendelstein KG	Germany	Brannenburg	not enough data
85	ChemoThermia Oncology Center	Turkey	Istanbul	not enough data
86	SJD Pediatric Cancer Center Barcelona	Spain	Barcelona	not enough data
87	Immunocine Cancer Center	Mexico	Cancun	not enough data
88	Hope4Cancer Treatment Centers Cancun	Mexico	Cancun	not enough data
89	Cancun Cancer Institute	Mexico	Cancun	not enough data
90	Dr Alejandro Martínez Oncólogo	Mexico	Tijuana	not enough data
91	Oncológica	Mexico	Mexico City	not enough data
92	Cancer Center Tijuana	Mexico	Tijuana	not enough data
93	Department of radiotherapy and clinical oncology Hospital in Nitra	Slovakia	Nitra	not enough data
94	Národný onkologický inštitút	Slovakia	Bratislava	not enough data
95	Klinická onkológia	Slovakia	Presov	not enough data
96	Klinická onkológia a radiačná onkológia - ambulancie, ožarovne	Slovakia	Zilina	not enough data
97	Oddelenie radiačnej onkológie	Slovakia	Komarno	not enough data
98	Amala s.r.o	Slovakia	Trebisov	not enough data
99	Philippine Oncology Center Corporation Fairview Center	Philippines	Quezon City	not enough data
100	OncoCare Philippines	Philippines	San Fernando	not enough data
101	Philippine Cancer Center	Philippines	Quezon City	not enough data
102	MANILA OFFICE / Modern Cancer Hospital Guangzhou	Philippines	Pasay City	not enough data
103	Keifer Jan T. Busto-Surgical Oncology, General Surgeon and Laparoscopic Surgeon	Philippines	San Mateo	not enough data
104	Global Care Cancer Institute Inc	Philippines	Bay	not enough data
105	Saint Lukes Medical Center Medical Oncology	Philippines	Quezon City	not enough data
106	Cardinal Santos Cancer Center	Philippines	San Juan City	not enough data
107	INTEGRA Cancer Institute	Guatemala	Guatemala City	not enough data
108	Centro de Cáncer Guatemala	Guatemala	Guatemala City	not enough data
109	Dr. Herbert Antonio Castillo Oliva	Guatemala	Guatemala City	not enough data
110	Cancer Consultants	Guatemala	Guatemala City	not enough data
111	Clínica de enfermedades Hematológicas	Guatemala	Guatemala City	not enough data
112	Dr Francisco Castillo	Guatemala	Guatemala City	not enough data
113	UCL Cancer Institute	United Kingdom	London	not enough data
114	St Luke's Cancer Centre	United Kingdom	Surrey	not enough data
115	Medias Klinikum Burghausen	Germany	Burghausen	not enough data
116	Universitäres Krebszentrum Universitätsklinikum Leipzig	Germany	Leipzig	not enough data
117	Oncologia Barcelona - Institut Imor	Spain	Barcelona	not enough data
118	COI Centro Oncológico Internacional CDMX	Mexico	Mexico City	not enough data
119	Oasis of Hope Breast Cancer Center	Mexico	Tijuana	not enough data
120	Immunotherapy Institute	Mexico	Tijuana	not enough data
121	Biomedicínske centrum SAV	Slovakia	Bratislava	not enough data
122	Onkologická ambulancia	Slovakia	Bratislava	not enough data
123	IOB Institute of Oncology	Spain	Barcelona	not enough data
124	Pracovisko radiačnej onkológie	Slovakia	Rimavska Sobota	not enough data
125	Centro de Excelencia GenesisCare Málaga	Spain	Malaga	not enough data
126	Centro 360 de Excelencia Oncológica GCCC	Spain	Barcelona	not enough data
127	Instituto Viamed de Oncología Quirúrgica Avanzada	Spain	Madrid	not enough data
128	Dr Deborah Mukherji - Medical Oncologist in Dubai	United Arab Emirates	Dubai	not enough data
129	Dr.Amit Chakraborty Cancer Care/ Best Head & Neck cancer Surgeon/ Thyroid & Larynx Cancer/Dubai UAE	United Arab Emirates	Dubai	not enough data
130	NSH Cyberknife Cancer Center	United Arab Emirates	Dubai	not enough data
131	Chiwamitra Cancer Hospital	Thailand	Tambon Kham Yai	not enough data
132	Chulabhorn Oncology Medical Centre	Thailand	Bangkok	not enough data
133	Verita Life	Thailand	Bangkok	not enough data
134	สถาบันโรคลำไส้ใหญ่และทวารหนัก Colorectal Disease Institute	Thailand	Phuket	not enough data
135	Okan Kuzhan	Turkey	Istanbul	not enough data
136	Dr. Atakan Demir	Turkey	Istanbul	not enough data

Showing 1–25 of 136

The GCR Rating is computed from verified patient reviews, patient-reported outcomes and clinical results. How the Rating is calculated →

Frequently asked questions

What does the GCR Rating measure for oncology & cancer clinics?

The GCR Rating is computed from verified patient reviews — rating, volume and recency — using a Bayesian model, not a simple average, and that calculation is the same for every specialty GCR ranks. Clinics in this ranking provide cancer diagnosis, chemotherapy, radiotherapy and surgical treatment — patients evaluating this category place particular weight on communication during an already difficult experience, alongside clinical outcomes. See the full methodology for the exact formula.

Is the GCR Rating the same as a clinic's Google star rating?

No. The GCR Rating is a separate score (out of 5, to three decimals) computed from verified review rating, volume and recency using a Bayesian model — not a simple star average. Two oncology & cancer clinics with the same Google star rating can end up with different GCR Ratings once volume and recency are factored in.

Does an oncology & cancer clinic need a minimum number of reviews to be ranked?

There's no fixed cutoff. GCR's Bayesian model pulls a clinic's average toward the oncology & cancer specialty-wide mean in proportion to how few verified reviews it has — so a clinic with limited review history starts near the typical score for the specialty and earns its way up or down as more verified reviews accumulate, rather than being excluded outright.

How often is this ranking updated?

Rankings are refreshed on a regular cycle as new verified reviews come in, so an oncology & cancer clinic's position can move up or down over time as its underlying review data changes.

What does it mean if an oncology & cancer clinic isn't listed here?

GCR ranks clinics it has verified review data for. If a clinic you're considering isn't listed, you can suggest it for review — GCR will look into adding it once enough verified patient data is available.

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