Customer Service


Sterling Fax Numbers
The following are Sterling Departmental Fax Numbers. Please find the appropriate fax number below and one of our Sterling representatives will gladly help you. If your request requires immediate attention, you may submit a request via our Contact Us page or you may call one of our toll-free Sterling phone numbers.

Sterling Fax Numbers
Sterling Option I ® 1-888-858-8552
Sterling Option II SM 1-888-858-8552
Sterling Premier® Medicare Supplement 360-392-9100
Sterling Medicare Select 360-392-9100
Sterling Partners® - Montana 1-888-858-8552
Sterling RxSM & Rx PlusSM 1-866-884-9474


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