Contact Us

If you have questions, comments or concerns, we want to hear from you — what you have to say is important to us.

There are a variety of ways to reach us. Please select the appropriate method from the list below.

If you are a Member who has enrolled in one of our plans and need assistance or want to understand your options for premium payments, please call 877-514-CGHC (2442) or via email at [email protected]

If you are a Broker/Agent interested in becoming appointed with CGHC, please contact us at [email protected].

If you are a Provider interested in contracting with CGHC to be included in CGHC’s Provider Network, please call 877-450-8497 to get connected with one of our Provider Relations Representatives.

If you need to contact our office for business-related matters, please call (414) 455-0500.

Not yet a Member?

Learn about Common Ground Healthcare Cooperative health insurance plans — call our Sales Department at 855-494-COOP (2667) or email us at [email protected].


Here to Help You

CGHC Customer Services is open from 8:00 AM – 5:00 PM CST, Monday through Friday, to assist with your questions.  Call volume continues to be extremely high, and we appreciate your patience.  We are working hard to address this issue and provide you with a high level of service.

Initial Invoicing & Binding Payment

Once enrolled, we will send you an invoice and confirmation letter. Your first payment must be made before your coverage goes into effect.

Ongoing Invoicing

Common Ground Healthcare Cooperative (CGHC) must receive your payment by the 20th day of each month of coverage. Payments received after the 20th of each month of coverage will be overdue. For example, payments must be received by March 20, 2014 in order for your payment to be considered on time for the coverage month of April, 2014.  If payment for the very first month of coverage becomes overdue, coverage will not begin and you must reenroll.

                Common Ground Healthcare Cooperative
                Box 78553
                Milwaukee, WI  53278-8553

Please write your Member ID Number on your check for faster and accurate processing.

Once Enrolled

Once you have completed your enrollment it can take up to three (3) business days for your information to be updated in our systems.  If you have made your first payment, you can expect your Welcome Packet to be mailed within two weeks.

Directions to CGHC 

120 Bishop's Way, Suite 150
Brookfield, WI  53005

Customer Service Hours:

Monday-Friday 8:00am - 4:30pm

Please make an appointment to ensure the right person is available to assist you. To make an appointment, please email [email protected] and let us know your preferred time to stop in.

Step-By-Step Driving Directions

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MEMBERS - 877-514-2442
Not yet a member? 855-494-2667


Common Ground Healthcare Cooperative
120 Bishop’s Way, Suite 150
Brookfield, WI 53005

Customer Service
Sales Center: 855-514-2442
Customer Service: 877-514-2442
Fax: (262) 754-9690
[email protected]

Prescription drug benefits inquiries:
Call Catamaran: (855) 577-6545

Premium payment mailing address:
Box 78553
Milwaukee, WI 53278-8553

Claims mailing address:

Envision - Aurora Health Care
PO Box 33837
Indianapolis IN 46203-0837

Empower–Trilogy Health Network
PO Box 1171
Milwaukee, WI 53201

First Health Network
PO Box 33837
Indianapolis IN 46203-0837

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