The best Immunotherapy with Keytruda (Pembolizumab) clinics in Mexico hold JCI and General Health Council accreditations, operating in cities like Mexicali and Monterrey. According to Bookimed’s ranking, the top clinics are Hospital de la Familia, , and . They stand out for General Health Council certification and private patient-focused care. When choosing a provider, look for certified oncologists, General Health Council accreditation, and proven immunotherapy protocols, with balanced cost and quality. Always consult a qualified oncologist before making a decision.