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CMO Provider Portal
CMO offers comprehensive services and support to enhance our healthcare providers ability to deliver quality patient care, reduce administrative cost and maintain their competitive advantage.


Provider Relations
Support Lines

(914) 377-4400

Monday - Friday
8:00 am - 6:00 pm

CMO is working to provide you with online access to meet many of your financial management requirements.

In the meantime, please contact CMO Customer Service Line:
888- MONTE CMO or 914-377-4400

Monday - Friday: 8:00 am - 6:00 pm

  • Confirm a member's enrollment status, benefits and co-payment information
  • Confirm authorization status including all medical management inquiries
  • Confirm claim status
  • Resolve inquiries regarding complaints, grievances and administrative appeals
  • Address any questions or needs related to CMO
  • Fax: 914-375-2174

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