Contact Us


v-smile5.jpgWe always want to be available to talk with you and address your concerns. Please feel free to contact us during the following hours through our office phone number or our e-mail address. Hours will vary according to school and work holidays. We also offer late days, so please call for availability.

If you have a real orthodontic emergency after hours, call the office phone number. A recording will give you a phone number for one of our doctors on call.

Gast Orthodontics

Tiburon/Belvedere Office
1550 Tiburon Blvd.
Tiburon, CA 94920
Map & Directions

Office Hours
Monday – Thursday: 7:30 a.m. – 4:30 p.m.
Friday: 7:30 a.m. – 2:00 p.m.

Phone: 415-435-0941
E-mail: [email protected]
Fax: 415-435-1462

Gast & Nielsen Orthodontics

Novato Office
190 San Marin Dr.
Novato, CA 94945
Map & Directions

Office Hours
Monday – Wednesday: 8:00 a.m. – 5:00 p.m.
Thursday: 7:30 a.m. – 4:30 p.m.

Phone: 415-892-0736
E-mail: [email protected] 
Fax: 415-892-9286