Worldwide ranking · 2026

Best oncology & cancer clinics, ranked worldwide

Ratings updated 21 October 2026

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

116clinics ranked

77,558data 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 116 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	4.894
2	The Brooklyn Cancer Center	United States	Kings County	4.825
3	Bangkok Hospital	Thailand	Bangkok	4.793
4	Samitivej Sukhumvit Hospital	Thailand	Bangkok	4.793
5	Mary Bird Perkins Cancer Center - Essen Lane	United States	Baton Rouge	4.790
6	Bangkok Cancer Hospital Wattanosoth	Thailand	Bangkok	4.758
7	Memorial Şişli Hastanesi	Turkey	Istanbul	4.696
8	Roswell Park Comprehensive Cancer Center	United States	Buffalo	4.694
9	Roswell Park Comprehensive Cancer Center	United States	New York	4.694
10	Fox Chase Cancer Center	United States	Philadelphia	4.575
11	Burjeel Cancer Institute	United Arab Emirates	Abu Dhabi	4.568
12	Dr. med. Daniela Grenacher-Horn	Germany	Munchen	4.566
13	Mammacentrum sv.Agáty ProCare	Slovakia	Banska Bystrica	4.513
14	Royal Marsden Hospital - Sutton	United Kingdom	London	4.511
15	Advanced Care Oncology Center	United Arab Emirates	Dubai	4.492
16	Weston Park Cancer Centre	United Kingdom	South Yorkshire	4.485
17	Dr Rabbia Khan	United Arab Emirates	Dubai	4.479
18	German Cancer Research Center	Germany	Heidelberg	4.479
19	Oncólogo en Aguascalientes - Dr. Raúl Alejandro López Saucedo	Mexico	Aguascalientes	4.463
20	Europäisches Radiochirurgie Centrum München	Germany	Munchen	4.447
21	Hospital Ruber Internacional	Spain	Madrid	4.445
22	Florida Cancer Specialists & Research Institute	United States	Winter Park	4.440
23	Acıbadem Bodrum Hospital	Turkey	Bodrum	4.426
24	Edificio Sixtino 1	Guatemala	Guatemala City	4.386
25	Namarak Hospital	Thailand	Bangkok	4.365
26	Národný onkologický ústav	Slovakia	Bratislava	4.354
27	MD Anderson Cancer Center Madrid	Spain	Madrid	4.340
28	Oncological Institute of St. Elizabeth	Slovakia	Bratislava	4.323
29	Hope4Cancer	Mexico	Tijuana	4.315
30	National Cancer Research Center	Spain	Madrid	4.280
31	National Center for Tumor Diseases - NCT	Germany	Heidelberg	4.278
32	The National Cancer Institute	Mexico	Mexico City	4.272
33	Dr Sadir Juma Alrawi	United Arab Emirates	Dubai	4.253
34	IVO. Instituto Valenciano de Oncología	Spain	Valencia	4.174
35	Oasis of Hope Hospital	Mexico	Tijuana	4.171
36	Istanbul Oncology Hospital	Turkey	Istanbul	4.164
37	VHIO Vall d'Hebron Institut d’Oncologia	Spain	Barcelona	4.144
38	Memorial Sloan Kettering Cancer Center New York - Main Hospital	United States	New York	4.143
39	The Christie NHS Foundation Trust	United Kingdom	Manchester	4.101
40	Oncologo Cancun Dr. Mijael Toiber Levy	Mexico	Cancun	4.091
41	UT MD Anderson Cancer Center	United States	Houston	4.061
42	Gulf International Cancer Center	United Arab Emirates	Abu Dhabi	4.057
43	Centro Médico	Guatemala	Guatemala City	4.050
44	ProfDrMehmet Tahir Oruç, Weightloss Surgery, Gastric Sleeve, Schlauchmagen, Tüp Mide, Obezite, Kanser Cerrahisi. Antalya	Turkey	Antalya	4.047
45	INCAN	Guatemala	Guatemala City	4.033
46	Bangkok Cancer Specialized Hospital	Thailand	Bangkok	4.011
47	The Royal Marsden Hospital	United Kingdom	London	4.005
48	Centro de Patología de la Mama - Fundación Tejerina	Spain	Madrid	3.953
49	Dr. Cem Yılmaz Meme Cerrahisi - İstanbul Breast Center	Turkey	Istanbul	3.931
50	Bumrungrad International Hospital	Thailand	Bangkok	3.913
51	Healthway Cancer Care Hospital	Philippines	Taguig	3.732
52	Banner MD Anderson Cancer Center at Banner - University Medical Center Phoenix	United States	Phoenix	3.400
53	Dr. Mohanad Diab, Cancer.Immunotherapy,Targeted,Chemotherapy,Latest,Cancer treatments	United Arab Emirates	Abu Dhabi	3.375
54	Východoslovenský onkologický ústav, a.s.	Slovakia	Kosice	3.370
55	Oncology Clinic at Loyola Heights	Philippines	Quezon City	3.119
56	Hyperthermie Zentrum Hannover	Germany	Hannover	3.071
57	Dr Roshan Koshy Jacob,Consultant Medical oncology/Haematology, NMC Royal Hospital Sharjah,Best oncologist/Haematologist	United Arab Emirates	Sharjah	3.006
58	Arcadia Praxisklinik	Germany	Bad Emstal	2.953
59	Arden Cancer Research Centre	United Kingdom	West Midlands	2.842
60	Guy's Cancer at QMH	United Kingdom	London	not enough data
61	Oncology Centre	United Kingdom	Gloucestershire	not enough data
62	LOC part of HCA Healthcare UK	United Kingdom	London	not enough data
63	UCL Cancer Institute	United Kingdom	London	not enough data
64	St Luke's Cancer Centre	United Kingdom	Surrey	not enough data
65	Icon Cancer Centre London	United Kingdom	London	not enough data
66	Medias Klinikum Burghausen	Germany	Burghausen	not enough data
67	Universitäres Krebszentrum Universitätsklinikum Leipzig	Germany	Leipzig	not enough data
68	UKD - TUD - HZDR	Germany	Dresden	not enough data
69	Hallwang Clinic GmbH	Germany	Dornstetten	not enough data
70	ChemoThermia Oncology Center	Turkey	Istanbul	not enough data
71	Okan Kuzhan	Turkey	Istanbul	not enough data
72	Assoc. Prof. Atakan Demir MD	Turkey	Istanbul	not enough data
73	Best Cancer Hospital in Turkey	Turkey	Istanbul	not enough data
74	Prof.Dr. Serdar Turhal	Turkey	Istanbul	not enough data
75	Chulabhorn Oncology Medical Centre	Thailand	Bangkok	not enough data
76	Chiwamitra Cancer Hospital	Thailand	Tambon Kham Yai	not enough data
77	สถาบันโรคลำไส้ใหญ่และทวารหนัก Colorectal Disease Institute	Thailand	Phuket	not enough data
78	Dr Cherian Thampy Oncologist Abudhabi	United Arab Emirates	Abu Dhabi	not enough data
79	NSH Cyberknife Cancer Center	United Arab Emirates	Dubai	not enough data
80	Tawam Oncology Center	United Arab Emirates	Al Ain	not enough data
81	Centro de Excelencia GenesisCare Málaga	Spain	Malaga	not enough data
82	Centro 360 de Excelencia Oncológica GCCC	Spain	Barcelona	not enough data
83	IOB Institute of Oncology	Spain	Barcelona	not enough data
84	INSTITUT CATALÀ D'ONCOLOGIA - BADALONA	Spain	Badalona	not enough data
85	Immunocine Cancer Center	Mexico	Cancun	not enough data
86	Cancun Cancer Institute	Mexico	Cancun	not enough data
87	Dr Alejandro Martínez Oncólogo	Mexico	Tijuana	not enough data
88	Hope4Cancer Treatment Centers Cancun	Mexico	Cancun	not enough data
89	Oncológica	Mexico	Mexico City	not enough data
90	Národný onkologický inštitút	Slovakia	Bratislava	not enough data
91	Department of radiotherapy and clinical oncology Hospital in Nitra	Slovakia	Nitra	not enough data
92	Klinická onkológia	Slovakia	Presov	not enough data
93	Klinická onkológia a radiačná onkológia - ambulancie, ožarovne	Slovakia	Zilina	not enough data
94	Oddelenie radiačnej onkológie	Slovakia	Komarno	not enough data
95	Amala s.r.o	Slovakia	Trebisov	not enough data
96	Philippine Oncology Center Corporation Fairview Center	Philippines	Quezon City	not enough data
97	OncoCare Philippines	Philippines	San Fernando	not enough data
98	Philippine Cancer Center	Philippines	Quezon City	not enough data
99	MANILA OFFICE / Modern Cancer Hospital Guangzhou	Philippines	Pasay City	not enough data
100	Cardinal Santos Cancer Center	Philippines	San Juan City	not enough data
101	Keifer Jan T. Busto-Surgical Oncology, General Surgeon and Laparoscopic Surgeon	Philippines	San Mateo	not enough data
102	Global Care Cancer Institute Inc	Philippines	Bay	not enough data
103	Saint Lukes Medical Center Medical Oncology	Philippines	Quezon City	not enough data
104	CENTRO ONCOLOGICO S.A.	Guatemala	Quetzaltenango, Guatemala. Xela	not enough data
105	INTEGRA Cancer Institute	Guatemala	Guatemala City	not enough data
106	Centro de Cáncer Guatemala	Guatemala	Guatemala City	not enough data
107	Dr. Herbert Antonio Castillo Oliva	Guatemala	Guatemala City	not enough data
108	Clínica de Radioterapia La Asunción	Guatemala	Guatemala City	not enough data
109	Cancer Consultants	Guatemala	Guatemala City	not enough data
110	Clínica de enfermedades Hematológicas	Guatemala	Guatemala City	not enough data
111	Dr. Veronica	United Arab Emirates	Dubai	not enough data
112	Klinika klinickej onkológie SZU a NOÚ	Slovakia	Bratislava	not enough data
113	Biomedicínske centrum SAV	Slovakia	Bratislava	not enough data
114	Pracovisko radiačnej onkológie	Slovakia	Rimavska Sobota	not enough data
115	Department of oncology	Slovakia	Trencin	not enough data
116	Dr Francisco Castillo	Guatemala	Guatemala City	not enough data

Showing 1–25 of 116

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.

Best oncology & cancer clinics, ranked worldwide

Browse oncology & cancer clinics by country

Frequently asked questions

Related rankings