Yes, but your private Physician may be able to arrange for the testing at a local lab. Anticoagulation adjustment are more accurate when monitored by the provider familiar with your prior responses.
There is an anticoagulation Clinic in Redding. This facility is called Heart Clinic. They are located at 850 Industrial St, STE 100, Redding, CA 96002 Phone: 530 244-2213. Provider: Kelie Mercier.