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

 800.338.3308


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