Del. Code tit. 19, § 2323

Any employee who alleges an industrial injury shall have the right to employ a physician, surgeon, dentist, optometrist or chiropractor of the employee’s own choosing. Notice of the employee’s intention to employ medical aid as aforesaid shall be given to the employee’s employer or its insurance carrier or to the Board. Notice that medical aid was employed as aforesaid shall be given within 30 days thereafter to the employer or its insurance carrier in writing. If the alleged injury is subsequently held to be compensable, the employer shall be liable for the reasonable cost of the services of any physician, surgeon, dentist, optometrist or chiropractor whose employment was utilized by the employee provided notice of said employment was given to the employer or its insurance carrier.