Contact Information
Medical and life insurance for former EG&G, BWXTO and CH2M Hill employees (retirement after Oct. 1, 1988)
Mound Benefits Center
P.O. Box 10361
Des Moines, IA 50306-0361
866.296.5036
9 a.m. to 6 p.m. Monday – Friday
www.RockyMound.mercerhrs.com
Mound Benefits Center provides assistance for the following:
- Medical & Pharmacy Coverage
- Life Insurance
- Dependents
- Beneficiaries
- Death Reporting
- Address Changes
- General Benefits Questions
Employment Verifications
Mound Benefits Center 866.296.5036
Insurance claims:
UMR
877.849.4084
Nurse line: 888.867.4850
www.umr.com
Prescription drug coverage:
CAREMARK
866.334.3870
www.caremark.com
Insurance Billing & Premiums (retiree billing services):
For questions call WageWorks – 877.722.2667
To mail premiums:
Conexis
PO Box 660212
Dallas, TX 75266-0212
Pension Benefit Payments
Effective Nov. 1, 2017:
MassMutual Insurance Company
800.775.4331
Pension benefits for former Monsanto Research Corporation employees
(retirement prior to Oct. 1, 1988):
Retiree Service Center
Benefits issue resolution:
Please use if you are unable to resolve issues with the contacts listed above.
Derick Herberholz
509.376.2370
RMBR@rl.gov