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P.O. Box Mailing Addresses

Please note the following county assignments for downstate and upstate New York.

Downstate: Bronx, Columbia, Delaware, Dutchess, Greene, Kings, Nassau, New York, Orange, Putnam, Queens County, Richmond, Rockland, Suffolk, Sullivan, Ulster, West Chester

Upstate: Albany, Allegany, Broome, Cattaraugus, Cayuga, Chautauqua, Chemung, Chenango, Clinton, Cortland, Erie, Essex, Franklin, Fulton, Genesee, Hamilton, Herkimer, Jefferson, Lewis, Livingston, Madison, Monroe, Montgomery, Niagara, Oneida, Onondaga, Ontario, Orleans, Oswego, Otsego, Rensselaer, Saratoga, Schenectady, Schoharie, Schuyler, Seneca, Steuben, St. Lawrence, Tioga, Tompkins, Warren, Washington, Wayne, Wyoming, Yates

Business Function State Mailing Address
Additional Documentation Requests CT, MA, ME, NH, NY, RI, VT National Government Services, Inc.
P.O. Box 7108
Indianapolis, IN 46207-7108
Additional Documentation Requests IL, MN, WI National Government Services, Inc.
Attn: Medical Review
P.O. Box 6475
Indianapolis, IN 46206-6475
ASCA Waiver Request Forms All states National Government Services, Inc.
Attn: ASCA
P.O. Box 7022
Indianapolis, IN 46207-7022
Appeals
(redeterminations and written reopenings)
CT, MA, ME, NH, NY, RI, VT National Government Services, Inc.
P.O. Box 7111
Indianapolis, IN 46207-7111
Appeals
(redeterminations and written reopenings)
IL, MN, WI National Government Services, Inc.
Attn: Appeals
P.O. Box 6475
Indianapolis, IN 46206-6475
Bank Lockbox
(personal checks/MSP involvement and non-MSP)

While we do not recommend sending refund checks overnight, if choosing an overnight mail service, (i.e., FedEx Express, UPS, or USPS), we ask that you use the following alternate mailing address:

US Bank
5300 S. Cicero
Chicago, IL 60638
Attention: JK 809645
CT, NY, MA, ME, NH, RI, VT National Government Services, Inc.
P.O. Box 809645
Chicago, IL 60680-9645
Bank Lockbox
(personal checks/MSP involvement and non-MSP)

While we do not recommend sending refund checks overnight, if choosing an overnight mail service, (i.e., FedEx Express, United Parcel Service [UPS], or United States Postal Service [USPS]), we ask that you use the following alternate mailing address:

US Bank
5300 S. Cicero
Chicago, IL 60638
Attention: J6 809194
IL, MN, WI National Government Services, Inc.
NGS 06002 IL MN WI Part B
P.O. Box 809194
Chicago, IL 60680-9194
Beneficiary Submitted Part B Claims
(CMS-1490S forms)
CT, MA, ME, NH, NY, RI, VT National Government Services, Inc.
P.O. Box 6178
Indianapolis, IN 46206-6178
Claims
(CMS-1500 forms)
CT National Government Services, Inc.
P.O. Box 6185
Indianapolis, IN 46206-6185
Claims
(CMS-1500 forms)
MA, ME, NH, NY (downstate counties), RI, VT National Government Services, Inc.
P.O. Box 6178
Indianapolis, IN 46206-6178
Claims
(CMS-1500 forms)
NY (Queens county) National Government Services, Inc.
P.O. Box 6239
Indianapolis, IN 46206-6239
Claims
(CMS-1500 forms)
NY (upstate counties) National Government Services, Inc.
P.O. Box 6189
Indianapolis, IN 46206-6189
Claims
(CMS-1500 forms)
IL, MN, WI National Government Services, Inc.
Attn: Claims
P.O. Box 6475
Indianapolis, IN 46206-6475
Congressional Correspondence All states National Government Services, Inc.
P.O. Box 6131
Indianapolis, IN 46206-6131
EDI Customer Support
(electronic billing forms and inquiries)
CT, MA, ME, NH, NY, RI, VT National Government Services, Inc.
P.O. Box 7111
Indianapolis, IN 46207-7165
EDI Customer Support
(electronic billing forms and inquiries)
IL, WI, MN National Government Services, Inc.
Attn: EDI
P.O. Box 6475
Indianapolis, IN 46206-6475
FOIA Inquiries All states National Government Services, Inc.
P.O. Box 6131
Indianapolis, IN 46206-6131
Health Professional Shortage Area Correspondence
(with the exception of HPSA appeals)
All states National Government Services, Inc.
P.O. Box 7071
Indianapolis, IN 46207-7071
Medical Policy
(local coverage determination reconsideration requests)
All states National Government Services, Inc.
Medical Policy Unit
Attn: LCD Reconsideration Requests
P.O. Box 7108
Indianapolis, IN 46207-7108
Medical Review
(documents/medical records and responses to additional development request [ADR] letters)
CT, MA, ME, NH, NY, RI, VT National Government Services, Inc.
P.O. Box 7108
Indianapolis, IN 46207-7108

Fax: 717-565-3783
Medical Review
(documents/medical records and responses to ADR letters)
IL, MN, WI National Government Services, Inc.Attn: Medical Review
P.O. Box 6475
Indianapolis, IN 46206-6475

Fax: 317-595-4364
ORU
(returned Medicare issued checks)
CT, MA, ME, NH, NY, RI, VT National Government Services, Inc.
P.O. Box 6178
Indianapolis, IN 46206-6178
ORU
(returned Medicare issued checks)
IL, MN, WI National Government Services, Inc.
Attn: ORU/Credit Balance
P.O. Box 6475
Indianapolis, IN 46206-6475
Provider Enrollment
(new EFT [CMS-588] or [CMS-855])
CT, MA, ME, NH, NY, RI, VT National Government Services, Inc.
P.O. Box 7149
Indianapolis, IN 46207-7149
Provider Enrollment
(new EFT [CMS-588] or [CMS-855])
IL, MN, WI National Government Services, Inc.
P.O. Box 6475
Indianapolis, IN 46206-6475
Provider Outreach and Education
(seminar payments and publication orders)
CT, MA, ME, NH, NY, RI, VT National Government Services, Inc.
P.O. Box 7149
Indianapolis, IN 46207-7149
Provider Written General Inquiries CT, MA, ME, NH, NY, RI, VT National Government Services, Inc.
P.O. Box 6189
Indianapolis, IN 46206-6189
Provider Written General Inquiries IL, MN, WI National Government Services, Inc.
Attn: Written Inquiries
P.O. Box 6475
Indianapolis, IN 46206-6475
Redeterminations IL, MN, WI National Government Services, Inc.
Attn: Appeals
P.O. Box 6475
Indianapolis, IN 46206-6475

* There has been no change to the P.O. boxes used for remitting payment for Medicare Trust Fund debts. Please refer to addresses found on demand letters and overpayment recovery forms to make payments on debts to the Medicare Trust Fund.

We encourage you to send business mail via the USPS. The USPS delivers to specific post office boxes allowing for faster receipt, timely processing and enhanced service to you.

P.O. Box Mailing Addresses
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