For all your Wellesley Women's Care billing inquiries Phone 617-965-4120 or 617-965-7800 option 5. For all MGB / NWH Billing inquiries. Phone: 617-726-3884 Email: patient billing @partners.org . Helpful tips: We do ask that you do not use our emergency line to "get through" to the office this will delay urgent care to a patient in need.