Worldwide ranking · 2026

Best oncology & cancer clinics, ranked worldwide

Ratings updated 11 November 2026

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

104clinics ranked

61,673data 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: November 2026. How this data is verified →

GCR ranks 104 oncology & cancer clinics across 12 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	Bangkok International Hospital	Thailand	Bangkok	4.872
2	Oncology Clinic at Loyola Heights	Philippines	Quezon City	4.835
3	Bangkok Hospital	Thailand	Bangkok	4.793
4	Samitivej Sukhumvit Hospital	Thailand	Bangkok	4.792
5	Bangkok Cancer Hospital Wattanosoth	Thailand	Bangkok	4.787
6	Memorial Şişli Hastanesi	Turkey	Istanbul	4.696
7	Roswell Park Comprehensive Cancer Center	United States	Buffalo	4.693
8	Roswell Park Comprehensive Cancer Center	United States	Buffalo	4.693
9	Dr. Raúl Alejandro López Saucedo	Mexico	Aguascalientes	4.688
10	Dr Rabbia Khan	United Arab Emirates	Dubai	4.684
11	Huntsman Cancer Institute	United States	Salt Lake City	4.595
12	Dr Sadir Juma Alrawi	United Arab Emirates	Dubai	4.594
13	Burjeel Cancer Institute	United Arab Emirates	Abu Dhabi	4.565
14	Europäisches Radiochirurgie Centrum München	Germany	Munich	4.521
15	VHIO Vall d'Hebron Institut d’Oncologia	Spain	Barcelona	4.513
16	Mammacentrum sv. Agáty ProCare	Slovakia	Banská Bystrica	4.506
17	The Christie	United Kingdom	Manchester	4.478
18	Oasis of Hope Hospital	Mexico	Tijuana	4.419
19	Prof. Dr. Mehmet Tahir Oruç	Turkey	Antalya	4.395
20	Hope4Cancer	Mexico	Tijuana	4.381
21	Gulf International Cancer Center	United Arab Emirates	Abu Dhabi	4.378
22	The Brooklyn Cancer Center	United States	New York	4.364
23	Centro de Patología de la Mama - Fundación Tejerina	Spain	Madrid	4.343
24	National Center for Tumor Diseases - NCT	Germany	Heidelberg	4.339
25	MD Anderson Cancer Center Madrid	Spain	Madrid	4.338
26	Weston Park Cancer Centre	United Kingdom	Sheffield	4.334
27	Národný onkologický ústav	Slovakia	Bratislava	4.300
28	Fred Hutch Cancer Center	United States	Seattle	4.264
29	IVO - Instituto Valenciano de Oncología	Spain	Valencia	4.239
30	Healthway Cancer Care Hospital	Philippines	Taguig	4.231
31	Advanced Care Oncology Center	United Arab Emirates	Dubai	4.196
32	Samsung Medical Center	South Korea	Seoul	4.135
33	The National Cancer Institute	Mexico	Mexico City	4.129
34	Istanbul Oncology Hospital	Turkey	Istanbul	4.113
35	Dr. med. Daniela Grenacher-Horn	Germany	Munich	4.057
36	UT MD Anderson Cancer Center	United States	Houston	3.993
37	Oncological Institute of St. Elizabeth	Slovakia	Bratislava	3.972
38	Bumrungrad International Hospital	Thailand	Bangkok	3.956
39	Namarak Hospital	Thailand	Bangkok	3.878
40	UCH Macmillan Cancer Centre	United Kingdom	London	3.731
41	Memorial Sloan Kettering Cancer Center	United States	New York	3.684
42	INCAN	Guatemala	Guatemala City	3.585
43	Bangkok Cancer Specialized Hospital	Thailand	Bangkok	3.565
44	The Royal Marsden Hospital	United Kingdom	London	3.560
45	İstanbul Breast Center - Dr. Cem Yılmaz	Turkey	Istanbul	3.494
46	Florida Cancer Specialists & Research Institute	United States	West Palm Beach	3.471
47	Nemocnica Penta Hospitals Michalovce	Slovakia	Michalovce	3.349
48	Východoslovenský onkologický ústav	Slovakia	Košice	2.994
49	Edinburgh Cancer Centre	United Kingdom	Edinburgh	not enough data
50	Oncology Centre	United Kingdom	Gloucestershire	not enough data
51	Guy's Cancer at QMH	United Kingdom	London	not enough data
52	LOC - HCA Healthcare UK	United Kingdom	London	not enough data
53	Icon Cancer Centre London	United Kingdom	London	not enough data
54	Arcadia Praxisklinik	Germany	Bad Emstal	not enough data
55	Hyperthermie Zentrum Hannover	Germany	Hanover	not enough data
56	Medias Klinikum Burghausen	Germany	Burghausen	not enough data
57	Universitäres Krebszentrum Universitätsklinikum Leipzig	Germany	Leipzig	not enough data
58	Veramed Clinic at Wendelstein	Germany	Brannenburg	not enough data
59	ChemoThermia Oncology Center	Turkey	Istanbul	not enough data
60	Okan Kuzhan	Turkey	Istanbul	not enough data
61	Assoc. Prof. Atakan Demir MD	Turkey	Istanbul	not enough data
62	Prof. Dr. Serdar Turhal	Turkey	Istanbul	not enough data
63	Chulabhorn Oncology Medical Centre	Thailand	Bangkok	not enough data
64	Chiwamitra Cancer Hospital	Thailand	Ubon Ratchathani	not enough data
65	Verita Life	Thailand	Bangkok	not enough data
66	Dr Cherian Thampy	United Arab Emirates	Abu Dhabi	not enough data
67	Dr Roshan Koshy Jacob	United Arab Emirates	Sharjah	not enough data
68	NSH Cyberknife Cancer Center	United Arab Emirates	Dubai	not enough data
69	Dr. Rajeev Kaushal	United Arab Emirates	Dubai	not enough data
70	Dr. Veronica	United Arab Emirates	Dubai	not enough data
71	Fundación MD Anderson Cancer Center España	Spain	Madrid	not enough data
72	Centro de Excelencia GenesisCare Málaga	Spain	Málaga	not enough data
73	Centro 360 de Excelencia Oncológica GCCC	Spain	Barcelona	not enough data
74	IOB Institute of Oncology	Spain	Barcelona	not enough data
75	SJD Pediatric Cancer Center Barcelona	Spain	Barcelona	not enough data
76	Immunocine Cancer Center	Mexico	Cancún	not enough data
77	Cancun Cancer Institute	Mexico	Cancún	not enough data
78	US Mexico Cancer Institute	Mexico	Tijuana	not enough data
79	Dr Alejandro Martínez	Mexico	Tijuana	not enough data
80	Hope4Cancer Treatment Centers Cancun	Mexico	Cancún	not enough data
81	Klinika klinickej onkológie SZU a NOÚ	Slovakia	Bratislava	not enough data
82	Národný onkologický inštitút	Slovakia	Bratislava	not enough data
83	Amala	Slovakia	Trebišov	not enough data
84	Department of oncology	Slovakia	Trenčín	not enough data
85	Philippine Oncology Center - Fairview	Philippines	Quezon City	not enough data
86	OncoCare Philippines	Philippines	San Fernando	not enough data
87	Philippine Cancer Center	Philippines	Quezon City	not enough data
88	Global Care Cancer Institute	Philippines	Bay	not enough data
89	Keifer Jan T. Busto	Philippines	San Mateo	not enough data
90	Cardinal Santos Cancer Center	Philippines	San Juan City	not enough data
91	St. Luke's Medical Center - Medical Oncology	Philippines	Quezon City	not enough data
92	INTEGRA Cancer Institute	Guatemala	Guatemala City	not enough data
93	Centro de Cáncer Guatemala	Guatemala	Guatemala City	not enough data
94	Dr. Julio Lau	Guatemala	Guatemala City	not enough data
95	Dr. Herbert Antonio Castillo Oliva	Guatemala	Guatemala City	not enough data
96	Clínica de Radioterapia La Asunción	Guatemala	Guatemala City	not enough data
97	Cancer Consultants	Guatemala	Guatemala City	not enough data
98	Clínica de enfermedades Hematológicas	Guatemala	Guatemala City	not enough data
99	St Luke's Cancer Centre	United Kingdom	Guildford	not enough data
100	Hallwang Clinic	Germany	Dornstetten	not enough data
101	Charité Comprehensive Cancer Center	Germany	Berlin	not enough data
102	Hallwang Private Oncology Clinic	Germany	Dornstetten	not enough data
103	Comprehensive Cancer Center CCCLMU	Germany	Munich	not enough data
104	Dr Francisco Castillo	Guatemala	Guatemala City	not enough data

Showing 1–25 of 104

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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