For Vendors: MMS Purchase Order Terms and Conditions

Download MMS Purchase Order Terms and Conditions Issued After March 21, 2019 (.pdf, 5 pages)

W-9 Upload for New Vendors

Please click the link below to access our secure W-9 portal to enter/upload your tax ID information. Contact accountspayable@mms.org if you have questions.

https://secure.massmed.org/mmsvendors

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