Great question because there's definitely a range in quality out there. You want to look for providers who specialize in dermatological procedures and have specific experience with vascular lesions. Check their credentials - they should be licensed medical professionals, either dermatologists or working under the supervision of one. Look at before and after photos of their work, read reviews from multiple sources, and pay attention to how they handle consultations. A good provider will take time to explain the procedure, discuss your specific situation, and answer all your questions without rushing you. Red flags would include places that pressure you to decide immediately, can't show you examples of their work, or have multiple complaints about complications or poor results.