New York Consolidated Laws, Financial Services Law - FIS § 604. Criteria for determining a reasonable fee

(a) whether there is a gross disparity between the fee charged by the provider for services rendered as compared to:

(b) the level of training, education and experience of the health care professional, and in the case of a hospital, the teaching staff, scope of services and case mix;

(c) the provider's usual charge for comparable services with regard to patients in health care plans in which the provider is not participating;

(d) the circumstances and complexity of the particular case, including time and place of the service;

(e) individual patient characteristics;

(f) the median of the rate recognized by the health care plan to reimburse similarly qualified providers for the same or similar services in the same region that are participating with the health care plan;  and

(g) with regard to physician services, the usual and customary cost of the service.