Worldwide ranking · 2026

Best oncology & cancer clinics, ranked worldwide

Ratings updated 1 October 2026

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

103clinics ranked

25,807data 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: September 2026. How this data is verified →

GCR ranks 103 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	The Brooklyn Cancer Center	United States	Kings County	4.789
2	Dr Sadir Juma Alrawi	United Arab Emirates	Dubai	4.711
3	Bangkok Cancer Hospital Wattanosoth	Thailand	Krung Thep Maha Nakhon	4.697
4	Bangkok Hospital	Thailand	Krung Thep Maha Nakhon	4.691
5	Burjeel Cancer Institute	United Arab Emirates	Abu Dhabi	4.589
6	Hospital Ruber Internacional	Spain	Madrid	4.460
7	Guy's NHS Cancer Centre	United Kingdom	Greater London	4.457
8	Gulf International Cancer Center	United Arab Emirates	Abu Dhabi	4.445
9	Centro de Patología de la Mama - Fundación Tejerina	Spain	Madrid	4.413
10	German Cancer Research Center	Germany	Heidelberg	4.401
11	National Cancer Research Center	Spain	Madrid	4.384
12	Advanced Care Oncology Center	United Arab Emirates	Dubai	4.326
13	Dr. Cem Yılmaz Meme Cerrahisi - İstanbul Breast Center	Turkey	Kadkoy	4.325
14	MD Anderson Cancer Center Madrid	Spain	Madrid	4.319
15	Prof. Dr. Serkan Keskin / Onkoloji	Turkey	Sisli	4.295
16	Oncological Institute of St. Elizabeth	Slovakia	Bratislava	4.290
17	National Center for Tumor Diseases - NCT	Germany	Heidelberg	4.243
18	Oasis of Hope Hospital	Mexico	Tijuana	4.229
19	The National Cancer Institute	Mexico	Ciudad de Mexico	4.215
20	City of Hope Helford Hospital	United States	Duarte	4.184
21	Hospital MD Anderson	Spain	Madrid	4.183
22	Bangkok Cancer Specialized Hospital	Thailand	Krung Thep Maha Nakhon	4.164
23	IVO. Instituto Valenciano de Oncología	Spain	Valencia	4.131
24	Namarak Hospital	Thailand	Krung Thep Maha Nakhon	4.119
25	Medicana International Ankara Hastanesi Cyberknife Radyocerrahi Merkezi	Turkey	Cankaya	4.116
26	VHIO Vall d'Hebron Institut d’Oncologia	Spain	Barcelona	4.099
27	Memorial Sloan Kettering Cancer Center New York - Main Hospital	United States	New York	4.096
28	Istanbul Oncology Hospital	Turkey	Maltepe	4.094
29	UT MD Anderson Cancer Center	United States	Houston	4.045
30	Anadolu Sağlık Merkezi Hastanesi	Turkey	Gebze	4.026
31	Fred Hutch Cancer Center	United States	Seattle	3.939
32	Hope4Cancer	Mexico	Tijuana	3.863
33	Národný onkologický ústav	Slovakia	Bratislava	3.693
34	Východoslovenský onkologický ústav, a.s.	Slovakia	Kosice IV	3.682
35	Florida Cancer Specialists & Research Institute	United States	Tampa	3.474
36	Oncology Clinic at Loyola Heights	Philippines	Quezon City	3.470
37	ION INSTITUTO ONCOLÓGICO NACIONAL	Mexico	Guadalajara	3.352
38	Dr Roshan Koshy Jacob,Consultant Medical oncology/Haematology, NMC Royal Hospital Sharjah,Best oncologist/Haematologist	United Arab Emirates	Sharjah	3.298
39	Arcadia Praxisklinik	Germany	Bad Emstal	3.235
40	Immunity Therapy Center	Mexico	Tijuana	3.194
41	Arden Cancer Research Centre	United Kingdom	West Midlands	3.141
42	Dr. Eugene Rent	United Arab Emirates	Dubai	3.073
43	Hospital Esperanza	Guatemala	Ciudad de Guatemala	2.990
44	Comprehensive Cancer Center CLARA CAMPAL	Spain	Madrid	2.791
45	LOC part of HCA Healthcare UK	United Kingdom	Greater London	not enough data
46	Icon Cancer Centre London	United Kingdom	Greater London	not enough data
47	The Cancer Centre	United Kingdom	Eaglestone	not enough data
48	The Royal Marsden Private Care at Cavendish Square	United Kingdom	Greater London	not enough data
49	Oncology Centre	United Kingdom	Gloucestershire	not enough data
50	Mount Vernon Cancer Centre	United Kingdom	Northwood	not enough data
51	Guy's Cancer at QMH	United Kingdom	Greater London	not enough data
52	St Luke's Cancer Centre	United Kingdom	Surrey	not enough data
53	Sharp Memorial Hospital Laurel Amtower Cancer Institute and Neuro-Oncology Center	United States	San Diego	not enough data
54	Hallwang Clinic GmbH	Germany	Dornstetten	not enough data
55	Charité Comprehensive Cancer Center	Germany	Berlin	not enough data
56	Hallwang Private Oncology Clinic	Germany	Dornstetten	not enough data
57	UKD - TUD - HZDR	Germany	Dresden	not enough data
58	Comprehensive Cancer Center CCCLMU - Cancer Center Munich	Germany	Munchen	not enough data
59	Outdoor Against Cancer gGmbH	Germany	Munchen	not enough data
60	Veramed Clinic at Wendelstein KG	Germany	Brannenburg	not enough data
61	ChemoThermia Oncology Center	Turkey	Kucukcekmece	not enough data
62	Dr. Atakan Demir	Turkey	Atasehir	not enough data
63	สถาบันโรคลำไส้ใหญ่และทวารหนัก Colorectal Disease Institute	Thailand	Amphoe Mueang Phuket	not enough data
64	Verita Life	Thailand	Krung Thep Maha Nakhon	not enough data
65	Chulabhorn Oncology Medical Centre	Thailand	Bangkok	not enough data
66	Chiwamitra Cancer Hospital	Thailand	Tambon Kham Yai	not enough data
67	NSH Cyberknife Cancer Center	United Arab Emirates	Dubai	not enough data
68	Dr.Amit Chakraborty Cancer Care/ Best Head & Neck cancer Surgeon/ Thyroid & Larynx Cancer/Dubai UAE	United Arab Emirates	Dubai	not enough data
69	CANCER HEALER CENTER	United Arab Emirates	دبي	not enough data
70	Dr Deborah Mukherji - Medical Oncologist in Dubai	United Arab Emirates	Dubai	not enough data
71	Centro 360 de Excelencia Oncológica GCCC	Spain	Barcelona	not enough data
72	Centro de Excelencia GenesisCare Málaga	Spain	Malaga	not enough data
73	IOB Institute of Oncology	Spain	Barcelona	not enough data
74	SJD Pediatric Cancer Center Barcelona	Spain	Barcelona	not enough data
75	Immunocine Cancer Center	Mexico	Cancun	not enough data
76	COI Centro Oncológico Internacional CDMX	Mexico	Ciudad de Mexico	not enough data
77	Oasis of Hope Breast Cancer Center	Mexico	Tijuana	not enough data
78	Immunotherapy Institute	Mexico	Tijuana	not enough data
79	Cancun Oncology Center	Mexico	Cancun	not enough data
80	Klinika klinickej onkológie SZU a NOÚ	Slovakia	Bratislava	not enough data
81	Národný onkologický inštitút	Slovakia	Bratislava	not enough data
82	Department of radiotherapy and clinical oncology Hospital in Nitra	Slovakia	Nitra	not enough data
83	Biomedicínske centrum SAV	Slovakia	Bratislava	not enough data
84	Klinická onkológia a radiačná onkológia - ambulancie, ožarovne	Slovakia	Zilina	not enough data
85	Pracovisko radiačnej onkológie	Slovakia	Rimavska Sobota	not enough data
86	Department of oncology	Slovakia	Trencin	not enough data
87	Philippine Oncology Center Corporation Fairview Center	Philippines	Quezon City	not enough data
88	Philippine Cancer Center	Philippines	Quezon City	not enough data
89	MANILA OFFICE / Modern Cancer Hospital Guangzhou	Philippines	Pasay City	not enough data
90	Asian Cancer Institute	Philippines	Muntinlupa	not enough data
91	OncoCare Philippines	Philippines	San Fernando	not enough data
92	The Cancer Center Philippines	Philippines	Makati City	not enough data
93	Cardinal Santos Cancer Center	Philippines	San Juan City	not enough data
94	POCC Radiation Therapy Unit - ManilaMed Branch	Philippines	Manila	not enough data
95	Philippine Foundation for Breast Care, Incorporated	Philippines	Quezon City	not enough data
96	INTEGRA Cancer Institute	Guatemala	Ciudad de Guatemala	not enough data
97	Centro de Cáncer Guatemala	Guatemala	Ciudad de Guatemala	not enough data
98	Cancer Consultants	Guatemala	Ciudad de Guatemala	not enough data
99	Dr. Herbert Antonio Castillo Oliva	Guatemala	Ciudad de Guatemala	not enough data
100	INCAN	Guatemala	Ciudad de Guatemala	not enough data
101	Clínica de enfermedades Hematológicas	Guatemala	Ciudad de Guatemala	not enough data
102	Dr. William Campbell Manzanares	Guatemala	Ciudad de Guatemala	not enough data
103	INSTITUT CATALÀ D'ONCOLOGIA - BADALONA	Spain	Badalona	not enough data

Showing 1–25 of 103

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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