For more information about our company, contact our corporate office:
NAMM California Corporate Office
3990 Concours, Suite 500
Ontario, CA 91764
1-909-605-8000
Provider disputes and appeals
Provider dispute resolution department
P.O. Box 6902
Rancho Cucamonga, CA 91729-6902
Claims addresses – Southern California
PrimeCare (All IPAs)
P.O. Box 6903
Rancho Cucamonga, CA 91729-6903
Mercy Physicians Medical Group
P.O. Box 6907
Rancho Cucamonga, CA 91729-6907
Primary Care Associates
P.O. Box 6906
Rancho Cucamonga, CA 91729-6906
Valley Physicians Network
P.O. Box 6903
Rancho Cucamonga, CA 91729-6903
Humana & SCAN PO2
P.O. Box 6904
Rancho Cucamonga, CA 91729-6904
Healthplan Forwards
P.O. Box 6901
Rancho Cucamonga, CA 91729-6901
Empire Physicians Medical Group
P.O. Box 6903
Rancho Cucamonga, CA 91729-6903
Helpful resources
Downstream provider notice
View claims submission information for physicians and providers.
Claims payment practices
Learn more about the claims payment policies followed by NAMM California.
