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This page contains information, notices and reports regarding the various benefit plans in which eligible retirees of NorthWestern Energy (NorthWestern) may participate.

Annual Reports and Notices
Medical, Dental, and Vision Benefit Plans
Life Insurance

NorthWestern's Group Life Insurance Plan is a fully insured plan through Unum Life Insurance Company of North America. Please contact the Benefits department with questions regarding life insurance benefits. 

401(k) Retirement Savings Plan

The NorthWestern 401(k) Retirement Savings Plan is administered by Fidelity Investments. All transactions, including withdrawals, rollovers and beneficiary designation may be initiated by contacting Fidelity Investments.

Contact Information

NorthWestern Benefits Department
Customer Service: (406) 497-4610

Blue Cross and Blue Shield of Montana Medical Plan
Customer Service: (855) 258-3489

Delta Dental Dental Plan
Customer Service: (800) 521-2651

Express Scripts, Inc. - Prescription Drug Program
Customer Service: (866) 892-0071

Vision Service Plan
Customer Service: (800) 877-7195

Fidelity Investments Retirement Savings (401k) Plan and HSA
Customer Service: (800) 835-5095

John Hancock Pension Services South Dakota/Nebraska Retirees in Pay
Customer Service: (800) 395-1113

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