Contact Us

CareSource® strives to make it easy for you to work with us, whether online or over the phone.

You can also do business with us online any time of the day or night. Visit our Provider Portal to check claims, prior authorization status, member eligibility, coordination of benefits and more.

Below is a list of the plan’s phone numbers for general questions, prior authorizations, claim inquiries and more, as well as common fax numbers and addresses. Use this list as a guide to help you find the appropriate contact for your questions.



Hours of Operations


Provider Services


Monday through Friday from 8 a.m. to 6 p.m. Eastern Time (ET)

Medical Prior Authorization


Monday through Friday from 8 a.m. to 6 p.m. Eastern Time (ET)

Fax: 855-761-9058

Pharmacy Prior Authorization


24 hours a day, 7 days a week

Fax: 877-251-5896

Pharmacy Help Desk


April 1 – Sept. 30, 8 a.m. to 8 p.m. ET Monday through Friday
Oct. 1 – March 31, 8 a.m. to 8 p.m. ET Seven days a week

FaxL 877-328-9660



Attn: Claims
P.O. Box 8730
Dayton, OH 45401-8730



Fax: 844-417-6261
P.O. Box 1947
Dayton, OH 45401-1947

Our CareSource24, Nurse Advice Line is open 24/7, 365 days a year, including holidays.

CareSource Office Closure Dates

Representatives are available by telephone Monday through Friday, except on the following holidays:

  • New Year’s Day
  • Martin Luther King Jr. Day
  • Memorial Day
  • Independence Day
  • Labor Day
  • Thanksgiving Day
  • Day after Thanksgiving
  • Christmas Eve
  • Christmas Day

Please note: If a holiday falls on a weekend date, CareSource will be closed the following business day.