# Contact ## expand\_more ### Addresses expand\_more ##### General Inquiries Kelly Arnett, Director 617-432-5004 --- ##### Billing Harvard University Central Accounts Receivable P.O. Box 4999 Boston, MA 02212 ##### Question about a CMI bill Mack Carroll [Mackenzie\_Carroll@hms.harvard.edu](mailto:Mackenzie_Carroll@hms.harvard.edu) [Pay a Bill - AR portal](https://oc.finance.harvard.edu/how-to/accounts-receivable/pay-an-ar-bill) --- ##### Shipping Harvard Medical School 240 Longwood Ave. Building C, Room 309 Boston, MA 02115 - Do not ship samples without receiving specific instructions from the CMI. ## CMI Contact Form