Important Contact Information
CMSP/Advanced Medical Management (AMM)

CMSP Member Questions:
CMSP/AMM Customer Service
Monday-Friday 8:00am to 5:00pm

(877) 589-6807

Provider Questions:
Claims, Utilization Management,
Provider Network, Provider Contracting,
Grievances and Appeals:

(877) 589-6807

Prescription Drug Services:
MedImpact Customer Service
(CMSP Pharmacy Services Administrator)

(800) 788-2949

CMSP/AMM Authorization
for hospital admission:

(877) 589-6807
Monday-Friday 8:00am to 5:00pm
After-hours, please call (562) 310-2145