Is it possible that my general practicioner doctor do anything about my obstructive sleep apnea?

He or she: Will likely assess and determine if referral to a sleep medicine specialist is appropriate.

Obstructive sleep: If you have been diagnosed with mild to moderate obstructive sleep apnea, a dentist who has been trained to take a physiological registration of the forward jaw position necessary to open the airway (without protruding the jaw too far forward- which can cause tmd problems- like headaches and jaw pain) can have a custom made appliance fabricated to increase the oxygen as well as help stop snoring.

General dentist: A general dentist who is trained can fabricate an oral appliance that is worn during sleep . These can be as effective as CPAP in treating patients with mild or moderate sleep apnea, or someone with severe sleep apnea who cannot tolerate cpap.

Referral: He/she can send you for a sleep study, then refer you to a Pulmonologist with subspecialty training in sleep disorders for treatment.

Possible: Some GPs also practice management of sleep apnea patients. Otherwise, best course is to refer you to a board-certified sleep specialist

Yes: They can access you for severity of sleep apnoea and also refer you for sleep studies which help to decide the management . http://patient.info/doctor/obstructive-sleep-apnoea-syndrome-pro