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Contact MarshMcLennan Customer Service

How to Reach a Person at MarshMcLennan

Verified Contact Information

Business Customer Service:

  • 1-212-345-6750
    Investor Relations

Headquarters:

  • 1-212-345-5000
Send Message

Customer Service:

r12iprocurement.helpdesk@mmc.com
Accounts Payable
hrservicecenterna@mmc.com
HR inquiries
incidentreporting@mmc.com
Reporting Security Incidents

Accessibility:

accessibility@mmc.com

Accounting/ Billing:

apac.internal.invoices@mmc.com
Asia Pacific
emea.internal.invoices@mmc.com
Europe, Middle East and Africa
latam.internal.invoices@mmc.com
Latin America
ame.internal.invoices@mmc.com
North America

Business Customer Service:

mmc.investor.relations@mmc.com
Investor Relations

Legal:

mmcprivacy@mmc.com
Privacy Inquiries
privacy@mmc.com
Privacy Inquiries

Media:

advantagemarketing@mmc.com
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Contact Information

MarshMcLennan Website:

MarshMcLennan Help Center:

Corporate Office Address:

Marsh and McLennan Companies, Inc.
1166 Avenue of the Americas
New York, New York 10036
United States

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