Umbilicoplasty for Removing Excess Skin Above Belly Button?

Belly Button surgery also called an umbilicoplasty, by itself only takes care of stretch marks and loose skin in the immediate area (few inches) of the belly button. It might be a good procedure for you but an exam would be required to confirm this impression. Choose the best plastic surgeon with the most experience (see below link).

The abdomen will often have significant changes following pregnancy. These include saggy, redundant skin, weakened muscles, and stretch marks. Treatment varies and needs to be individualized based on the deformity encountered. Careful analysis of the anatomic deformity is essential to obtaining an aesthetically attractive result.
In the absence of a thorough physical examination, your picture and comments suggest that you have a residual deformity, which primarily involves the area above the belly button.
Conversion of your mini abdominoplasty to a full abdominoplasty may be necessary to correct your problem. A small, vertical incision may be necessary if there is insufficient laxity of the upper abdominal skin to allow transverse closure of the wound. Utilizing this approach, it’s possible to correct these types of problems with secondary abdominoplasty.