To qualify for financial assistance at the Harris Health, you must be a resident of Harris County. The sliding fee scale program is available to uninsured patients who are unable to pay for medically necessary services at certain Northwell Health clinics.For appointment information, please call . Sliding Fee Schedule. A sliding fee schedule is a mechanism for discounting fees in accordance with the patient's ability to pay for care. . Provides dental care for all ages. Free or low-cost dental services for children and adolescents are provided at the HCPH Humble and Southeast dental clinics. The Sliding-Fee Discount Program is based on an individual's income and family size. No one is denied care because of an inability to pay. Medicaid, CHIP, Sliding Scale.