evidence: For MassHealth, FFS, PCACO, and PCC Plans Customer Service 1-800-841-2900 (Monday – Friday, 8 a.m. – 5 p.m.) [...] If you have questions regarding the MassHealth process for prescribing special formulas to MassHealth WIC participants, please contact the following Customer Service Centers, depending on your patients MassHealth coverage type: [...] - Contact: Health Services Department. Tel: (413) 787-4000 x5027, Fax:(413) 233-2700 - Mass General Brigham ACO - Contact: DME-Nutritional Authorizations Team—Department; Clinical Operations. Tel: (855) 444-4647 (toll free), Fax: (617) 586-1700 - Tufts Health Plan - Contact: Tel: (888) 257-1985, Fax: (888) 415-9055 - WellSense (formerly BMCHP)