I had parotid surgery this cause my cheek sunken Dr advised of fat grafting. Can my cheeks be chubbier naturally w/out surgery?

Volume and contouring of the cheeks can be created with well-placed fillers (Voluma, Radiesse, Bellafill, Contour) and Sculptra. Implants or fat are alternatives. Botox and radiofrequency can help slim and contour the jawline. Liposuction can help slim the face. Ultherapy, J Plasma and rf treatments can provide skin tightening and lift. I recommend getting a formal evaluation with a facial sculpting expert. Best, Dr. Emer

There are multiple options for restoring the face after a parotidectomy.  Thankfully, there are several non-surgical options which can help restore facial volume after a parotidectomy.
The parotid gland is removed during a parotidectomy which can create asymmetry in the facial appearance.  Options for repair:
-Sculptra- Sculptra can be a good volumizer and typically has at least a 2 year duration.  Not all patients respond well to sculptra.
-HA fillers- Hyaluronic fillers can be used as an option but tend to come in 1 cc aliquots.  Vollure is the softest and latest of the HA fillers and can last up to 18 months.  Duration may be less for patients near the mobile area of the parotid gland.
-Radiesse- Radiesse is often used to define the jaw angle and may last longer than softer fillers in this area.
-Fat grafting- Fat can be used to provide a larger amount of volume and often mimics the texture of the parotid gland.
-Muscle flaps- Muscle flaps such as an sternocleidomastoid flap are often best done at same time as parotid removal.

Normally the loss of tissue following parotid surgery does not return naturally.  Fat grafting or injectable fillers could be used to add volume to the area.  

Generally, following parotidectomy surgery, there can be a deep depression on the side of your face.  This unfortunately will not fill in naturally over time.  Often times, muscle transposition is performed at the time of the parotidectomy or fat grafting afterwards (may require multiple sessions) depending on the depth of the depression.  Please consult with a board certified facial plastic surgeon who can assist you with achieving the goals you seek.