State Insurance Contact Guides: 22 Essential Provider Lists

State insurance contact guides put the provider contacts for one state on one page: each major payer, the state Medicaid agency and your Medicare claims contractor. MCM South now has 22 of them, and they are written for psychotherapists, psychologists and psychiatrists who are tired of hunting for the right line.

State insurance contact guides: what each one includes

• Provider contact lines for the main private payers, labeled by purpose and checked in October 2026
• A link to each payer’s official provider page next to its row
• The state Medicaid agency and its claims contractor
• The Medicare Administrative Contractor that processes your Part B claims
• A short list of what to have ready before you call
• Free CPT quick sheets for common behavioral health codes

When we cannot confirm a number on a payer’s own page, the guide sends you to that payer’s contact page instead of printing a number we cannot support.

How to use state insurance contact guides before you call

Start with the right plan. Check the member ID card, then open your state’s guide and find the payer. Have your NPI and tax ID, the patient’s ID and date of birth, the date of service and the claim number in front of you. Our insurance verification service does this check up front for MCM South clients. For a claim that was denied, our guide to CARC and RARC codes explains what the payer told you.

The 22 state insurance contact guides

Guides are live for Alabama, Arizona, California, Colorado, Connecticut, Florida, Georgia, Illinois, Maryland and DC (one guide), Massachusetts, Michigan, Minnesota, New Jersey, New York, North Carolina, Ohio, Oregon, Pennsylvania, Tennessee, Texas, Washington and Wisconsin. Spanish versions are available for the guides. Start from the insurance companies contact by state hub, or go straight to Georgia, Massachusetts, Texas or Florida.

Private payers, Medicare and Medicaid, and state rules

• Private payers: each insurer sets its own contacts, networks and filing limits. Blue Cross and Blue Shield plans are separate companies in each state, so use your state’s guide and see our Georgia Blue Cross guide as an example.
• Medicare and Medicaid: Medicare claims go to a regional contractor. Medicaid is run by each state, and many states use managed care plans. See Medicaid managed care organization and read how CMS describes coordination of benefits when a patient has two plans.
• State rules: insurance and Medicaid rules vary by state. Our state and regional billing guides cover the billing side. This is operational guidance, not legal advice.

How MCM South helps

MCM South serves psychotherapists and psychiatrists. We verify benefits, submit claims, follow up on denials and handle credentialing so your team spends less time on hold. See our billing services. The guides cover more states than we serve, so you can use them whether or not you work with us.

Where MCM South works

MCM South serves psychotherapists and psychiatrists in ten currently served states: Georgia, Massachusetts, Connecticut, Texas, Florida, New York, Colorado, Tennessee, North Carolina and Illinois. We bill for solo and medium-size mental and behavioral health practices only, and we also bill out-of-network claims for clients.

The short version

• The 22 state insurance contact guides list provider contacts for private payers, Medicaid and Medicare.
• Each row links to the payer’s official provider page.
• Numbers we cannot confirm are left off, with a link to the payer’s contact page.
• Have your NPI, tax ID, member ID and claim number ready before you call.
• Use the state insurance contact guides for any state, even if you do not work with MCM South.

Sources checked (10/26/26)

• MCM South, insurance companies contact by state hub
• CMS, Coordination of Benefits

Frequently asked questions

Frequently asked questions