California Insurance Companies Contact: Behavioral Health Provider Numbers
California insurance companies contact information is the set of provider phone numbers and official pages a mental health practice uses for eligibility, claims and appeals. This page lists the behavioral health provider numbers for private insurers that cover California, plus California Medicaid enrollment. Checked October 2026.
MCM South Medical Billing Service bills for psychotherapists and psychiatrists in California and makes these calls for them. Get a Free Quote
Behavioral health provider contacts
CaliforniaInsurance Companies Contact
Provider phone numbers for psychotherapists and psychiatrists, checked and sourced.
Confirmed October 2026
California insurance companies contact: private payer provider numbers
Call the provider services number on the patient’s member ID card first. The numbers below come from each insurer’s official provider page. Blue Cross Blue Shield is a federation of independent companies, so only the California licensee applies here. Nothing on this page is legal advice.
| Insurer | Provider phone | Official page |
|---|---|---|
| Aetna | 888-632-3862 Non-Medicare plans 800-624-0756 Medicare plans |
Aetna provider contact page |
| Anthem Blue Cross (Elevance Health) | 800-282-4548 Availity Essentials support, Monday to Friday, 5 a.m. to 5 p.m. PT. For benefits, eligibility and claims, use the number on the member ID card | Anthem Blue Cross California provider contact page |
| Blue Shield of California | 800-541-6652 Provider Services: eligibility and benefits, 24/7 877-263-9952 Mental health services (HMO and PPO), weekdays 8 a.m. to 5 p.m. |
Blue Shield of California eligibility and benefits contacts |
| Carelon | 800-397-1630 National provider services line: network status and general questions 800-888-3944 General questions about claims 800-282-4548 Availity Essentials support: claims, eligibility, claim status 877-331-7154 Payspan registration: direct deposit and remittance |
Provider contact information |
| Cigna (Evernorth) | 800-882-4462 Cigna Healthcare 800-926-2273 Evernorth Behavioral Health |
Cigna provider home |
| Humana | 800-457-4708 Medicare eligibility, benefits, claims 800-523-0023 Prior authorization, including behavioral health |
Humana provider home |
| United Behavioral Health (Optum) | 877-614-0484 Behavioral health and substance use, 24/7 | UnitedHealthcare provider contact directory |
| UnitedHealthcare | 800-600-9007 Medicare Advantage and Community Plan 888-478-4760 Individual exchange plans 800-291-2634 All Savers |
UnitedHealthcare provider contact directory |
California Medicaid provider enrollment
The California Department of Health Care Services runs Medi-Cal. Call 800-541-5555 (within California) or 916-636-1200 (outside California), Medi-Cal Telephone Service Center. For provider enrollment, call the Provider Enrollment Division message center at 916-323-1945. PAVE technical support is 866-252-1949. Checked October 2026. Source: DHCS provider enrollment contact list.
California Medicare: who processes your Part B claims
California Medicare claims go to one Medicare Administrative Contractor (MAC). Noridian Healthcare Solutions is the Medicare Administrative Contractor (MAC) for California. Medicare Advantage plans from Aetna, Humana or UnitedHealthcare are private plans, so call the number on the member card for those. Medicare, Medicaid and private payers follow different rules. Phone numbers come from the CMS provider contact table, checked October 2026.
| Medicare contractor | Jurisdiction | Provider phone | Official page |
|---|---|---|---|
| Noridian Healthcare Solutions | Jurisdiction E (California, Hawaii, Nevada, American Samoa, Guam, Northern Mariana Islands) | 855-609-9960 (TTY 855-549-9874) | CMS provider contact table |
What to have ready before you call a California insurer
A short, prepared call is faster than a long one. Keep these in front of you before you dial any California insurance companies contact number:
- The patient’s name as it appears on the card, date of birth and address.
- Your individual NPI (National Provider Identifier) and your tax ID.
- The date of service, the CPT code and the total billed amount. See the non-E/M CPT guide and the E/M CPT guide for psychiatrists.
- The claim number from the payer portal, if you have one.
Write down the name of the representative and a call reference number. Phone menus, holds and transfers can add up, and a dropped call means starting over. If you would rather not make these calls, MCM South does it for psychotherapists and psychiatrists.
California insurance contact FAQs
Who do I call for California insurance eligibility and claims for therapy?
Call the provider services number on the patient’s member ID card. If the plan carves out behavioral health, use the behavioral health number for that plan, listed in the table above.
Does MCM South bill California practices?
MCM South currently serves practices in Georgia, Massachusetts, Connecticut, Texas, Florida, New York, Colorado, Tennessee, North Carolina and Illinois, and has worked with providers in all 50 states over time. Request a quote to ask about California.
Where are the numbers for other states?
The full insurance companies contact directory lists insurers by state, with the date each number was checked.
Related: CPT and E/M code guide, in-network vs. out-of-network, billing terms glossary and billing services.
Free CPT code quick sheets for California practices
Three one-page PDFs for your billing desk, built to sit beside the California insurance companies contact numbers above. Each lists the codes with time ranges and links to the CMS pages we checked in October 2026. CPT codes are national, but payer rules vary by state and by insurer.
E/M codes for psychiatrists
Evaluation and management codes plus psychotherapy add-ons, with time ranges.
Psychotherapy codes (non-E/M)
Individual, family, group and crisis psychotherapy codes at a glance.
Psychological and neuropsychological testing codes
Testing, administration and scoring, and brief screening codes.