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Provider Contact Center

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Want to talk to us?

Note: The PCC will close twice a month for training and staff development. The PCC closures for training will be 12:00 p.m.–4:00 p.m. ET on the 2nd and 4th Friday of each month for all locations. This schedule was determined based on our lowest call volume times to reduce impact to our providers.

State/Region Toll-Free Number IVR PCC Hours of Service
Alaska, Arizona, California, Hawaii, Idaho, Nevada, Oregon, Washington, American Samoa, Guam, Northern Mariana Island 866-590-6724

TTY: Call 711 and provide the above phone number to the agent.		 866-277-7287 Monday‑Friday*
8:00 a.m.‑4:00 p.m. PT

*Closed for training on the 2nd and 4th Friday of the month
9:00 a.m.‑1:00 p.m. PT
Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont 866-289-0423

TTY: Call 711 and provide the above phone number to the agent.		 866-275-7396 Monday-Friday*
8:00 a.m.‑4:00 p.m. ET

*Closed for training on the 2nd and 4th Friday of the month.
12:00‑4:00 p.m. ET
Michigan, Minnesota, New York, New Jersey, Wisconsin, Puerto Rico, U.S. Virgin Islands 866-590-6728

TTY: Call 711 and provide the above phone number to the agent.		 866-275-3033 Monday-Friday*
8:00 a.m.‑4:00 p.m. CT
9:00 a.m.-5:00 p.m. ET

*Closed for training on the 2nd and 4th Friday of the month.
11:00 a.m.‑3:00 p.m. CT
12:00‑4:00 p.m. ET


The CMS requires that Medicare contractors offer self-service options to their providers for general inquiries. CMS also requires providers to use these self-service options. To fully comply with this requirement effective 5/14/2018, if you contact the PCC, and the information you are requesting is available via the IVR or NGSConnex, the PCC will be required to direct you to the IVR or NGSConnex to obtain the information.

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Make the Most of Your Call

Be prepared to have the following information available:

  • NPI
  • PTAN
  • The last five digits of your TIN

Note: You are allowed three attempts to correctly provide your NPI, PTAN and last five digits of your TIN.

The following is required for claim-specific inquiries:

  • Patients Medicare Identification Number
  • Patient's last name and first name or initial (date of birth may be needed)
  • The date(s) of service in question
  • Denial reason (if unknown please call IVR)

We recommend using NGSConnex, our complimentary and secure self-service portal, to check beneficiary eligibility, claim status, and more. To enroll, visit: NGSConnex User Guide.

Please view our holiday hours schedule to learn when the National Government Services PCC will be closed.

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Customer Care Representative Assistance

The National Government Services PCC CCRs are available to assist you with a wide-range of Medicare coverage and billing-related inquiries. Please review the following information for a better understanding of the types of inquiries the CCRs are available to assist you with.

Note: To effectively service all callers, effective 5/1/2025, the PCC will service one PTAN/NPI combination per call.

CCRs are available to:

  • clarify why a claim processed the way it did;
  • assist with general Medicare information/billing questions;
  • provide guidance on how to use the IVR system and the NGSMedicare.com website; and
  • assist with other complex issues that cannot be addressed through the IVR system.

CCRs are not able to:

  • provide claim status, beneficiary eligibility, or any other information that is available through NGSConnex;
  • provide information on what modifiers, diagnosis codes, CPT codes, or HCPCS to use for specific claims or beneficiaries;
  • preauthorize any type of service or supply; and
  • answer inquiries from beneficiaries or their representatives.

Note: Based on CMS requirements, if you call a Customer Care Representative with a question that can be answered by the IVR or in NGSConnex, you will be referred back to those self-help tools.

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Interactive Voice Response

Hours Available*

Monday–Friday: 6:00 a.m.–7:00 p.m. ET
Saturday: 7:00 a.m.–3:00 p.m. ET

*IVR system hours represent general availability for access to all menu options. The IVR system is available 24-hours a day, seven days a week. Menu options that require system access (e.g., the CWF) are limited to that systems availability.

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NGSConnex Online Inquiry System

NGSConnex is the National Government Service web application developed just for you! NGSConnex allows you to access a wide array of Medicare tools and information, such as:

  • Beneficiary eligibility and entitlement information
  • Query for your claims status
  • View your provider/supplier demographic information
  • Query for your financial data
  • View and print your remittance advice
  • Submitt an online inquiry

NGSConnex is available at https://www.NGSConnex.com and offers you superior search capabilities that will help make it fast and easy for you to find the information without having to call the National Government Services PCC.

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Freedom of Information Act (FOIA) Inquiries

Requests for documents covered by the FOIA must be submitted to the following address in writing.

National Government Services, Inc.
P.O. Box 6131
Indianapolis, IN 46206-6131

Fax: 315-442-4269

Your request must:

  • State the request is made under Freedom of Information Act or Privacy Act.
  • Have an indication that you will pay all appropriate fees.
  • Identify records sought. Be as specific as possible.
  • Contain a reasonable description of the record needed.
  • Include requestor name, address, personal signature and a return address.

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Centers for Medicare & Medicaid Services Offices

CMS has central offices located in Baltimore, MD and Washington, D.C., and ten regional offices located throughout the country.

Revised 4/1/2025