Provider services

Astellas medical-information request line and email published on the IZERVAY HCP access page; the same 1-800-727-7003 / AstellasAnswers number appears across Astellas HCP sites (e.g. XTANDI). The page also routes adverse events and product complaints to this phone or safety-us@astellas.com. Not for benefit verification or prior authorization (use the product's Support Solutions line).

Astellas Pharma US regional headquarters (2375 Waterview Drive, Northbrook, IL 60062) contact published in the Astellas global directory for general inquiries and to report an adverse event/side effect or product complaint. The fax is the published U.S. adverse-event/product-complaint fax. Not a patient-access hub.

Astellas Return Goods Policy (revised June 8, 2026) directs additional questions to Astellas Reversed Logistics or Supply Chain Operations at this email. Concealed damage/shipping-error reports go to reversedlogistics-sm@astellas.com per the same PDF; returns are processed through Inmar Rx Solutions. Not for clinical questions.

Access, benefit verification and reimbursement support for XTANDI (enzalutamide) only. Hours from the XTANDI HCP support page.

PADCEV (enfortumab vedotin) only: dedicated access specialists, phone enrollment, copay assistance eligibility and Patient Assistance Program. Fax completed Patient Enrollment Form or PAP application (with signatures) to the fax, or upload via the Prescriber Portal.

XOSPATA (gilteritinib) only: access specialists, prescription by phone, benefits verification and PAP. Fax the signed Patient Enrollment Form or PAP application.

CRESEMBA (isavuconazonium) only: access specialists, savings card and patient assistance questions. Fax the completed Patient Enrollment Form (or enroll at CRESEMBAaccess.com).

VEOZAH (fezolinetant) only. Patient Care Coordinators; prescriptions may be sent by eRx to PharmaCord (Louisville, KY), called in to the phone, or faxed to the fax. Uninsured patients may be referred to the Astellas PAP via this line.

VYLOY (zolbetuximab) only. Fax the completed Patient Enrollment Form. The page also lists specialty distributors; those are third parties.

IZERVAY (avacincaptad pegol) only. Phone from the Astellas Pharma Support Solutions contact page ('For help with IZERVAY, please call 1-888-256-9929'). The IZERVAY ECP access page lists enrollment form submission by email or fax 1-833-C5MYWAY (1-833-256-9929). Note the phone (888) and fax (833) differ only in area code; confirm before faxing.