(a) A power of attorney is effective when executed unless the principal provides in the power of attorney that it becomes effective at a future date or upon the occurrence of a future event or contingency.
(b) If a power of attorney becomes effective upon the occurrence of a future event or contingency, the principal, in the power of attorney, may authorize one or more persons to determine in a writing or other record that the event or contingency has occurred.
(c) If a power of attorney becomes effective upon the principal's incapacity and the principal has not authorized a person to determine whether the principal is incapacitated, or the person authorized is unable or unwilling to make the determination, the power of attorney becomes effective upon a determination in a writing or other record by:
(1) A physician or licensed psychologist that the principal is incapacitated within the meaning of section one hundred two (5) (A) of this article; or