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Noridian Part A Contact Information

Contact Brief Description

Provider Contact Centers

Our single toll-free number unifies customer service areas and simplifies provider contact. Phone calls are directed by caller, through our IVR system, to most appropriate department CSR or to our IVR. View call flow, authentication details and customer service areas of assistance

  • 855-609-9960 (Monday – Friday 6 a.m. - 5 p.m. PT)
  • Text Teletype Calls (TTY): 855-549-9874 (Monday – Friday 8 a.m. - 5 p.m. PT)

Medicare Beneficiaries - Noridian is unable to assist Medicare beneficiaries. Contact 1-800-MEDICARE for assistance

CMS Comments on Noridian

Providers may offer comments to CMS concerning Noridian's performance, write to address on this webpage

Congressional Inquiries

Congressional offices may receive inquiries from constituents regarding their Medicare services. View elements to request assistance from Noridian

Contractor Medical Director (CMD)

View CMD Contact Information

Email Customer Service

You may submit emails to Noridian for answers regarding basic provider information regarding Medicare regulations and coverage. View this page for details and request form

Fax Numbers

View fax numbers and submission guidelines

Freedom of Information Act (FOIA)

View mail address and details on how to submit a FOIA request

Holiday Schedule

View holiday dates that Noridian operations, including PCC phone lines, will be unavailable for customer service

Interactive Voice Response (IVR)

View conversion tool and information on how to use IVR and what information is available through system. General IVR inquiries available 24/7

  • 855-609-9960

Mailing Addresses

View mail addresses for submitting written correspondence, such as claims, letters, questions, general inquiries, enrollment applications and changes, written redetermination requests and checks to Noridian


In event additional assistance is needed or requires elevated levels of support, use Noridian contact information available on this webpage

Noridian Medicare Portal

Provider Contact Center representatives are available to answer questions at 855-609-9960 from 6 a.m. - 5 p.m. PT. Monday through Friday.

Noridian Medicare Portal Hours of Availability

  • Eligibility: 24/7
  • All Other Functions and Registration: Monday - Friday 4 a.m. - 7 p.m. PT; Saturday 4 a.m. - 2 p.m. PT 

Provider Contact Center Training Closures

View training dates and times that Noridian Provider Contact Center (PCC) phone lines will be unavailable for customer service


Last Updated Feb 21, 2017