Merck Patient Assistance and Access Programs

Patient billing and financial help

Find billing teams, financial-assistance programs and payment correspondence addresses. A bill-payment address is not a claims, records or specimen destination.

patient assistance

General patient assistance questions and application status

Official page read
Phone800-727-5400Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern; holiday hours may differ

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address
Merck Patient Assistance Program PO Box 1206 Wilkes Barre, PA 18703-1206

General PAP correspondence. Use the selected medicine instructions for applications; Lagevrio requires an expedited phone request and must not be mailed.

The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Online application technical issues

Official page read
Phone888-727-0085Published hours

Not published in this record

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

Technical help with the online application. Product-specific enrollment and eligibility questions use the relevant program line.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Adult vaccine patient assistance questions

Official page read
Phone800-293-3881Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

Adult vaccine program inquiries. Product-specific enrollment routes are listed separately. The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Belsomra patient assistance

Official page read
Phone800-727-5400Fax

800-498-5540

Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address
Merck Patient Assistance Program PO Box 1206 Wilkes Barre, PA 18703-1206

Completed Belsomra PAP enrollment application, as directed on the product page.

The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Capvaxive — adult vaccine patient assistance

Official page read
Phone800-293-3881Fax

800-528-2551

Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

Provider enrollment must be approved before vaccine administration under this program. The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Delstrigo patient assistance

Official page read
Phone800-727-5400Fax

800-498-5540

Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address
Merck Patient Assistance Program PO Box 1206 Wilkes Barre, PA 18703-1206

Completed Delstrigo PAP enrollment application, as directed on the product page.

The product page also directs expedited requests to this program number. The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Emend for Injection — hospital product replacement

Official page read
Phone888-727-9535Published hours

Monday–Friday, 9 a.m.–5 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

EMEND for Injection 150 mg for hospital inpatients. The outpatient route is different. The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Emend for Injection — outpatient patient assistance

Official page read
Phone800-727-5400Fax

800-498-5540

Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address
Merck Patient Assistance Program PO Box 1206 Wilkes Barre, PA 18703-1206

Completed Emend for Injection PAP enrollment application, as directed on the product page.

EMEND for Injection 150 mg for patients in an outpatient setting. The hospital inpatient replacement route is different. The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Gardasil 9 — adult vaccine patient assistance

Official page read
Phone800-293-3881Fax

800-528-2551

Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

Provider enrollment must be approved before vaccine administration under this program. The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Idvynso patient assistance

Official page read
Phone877-709-4455Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Isentress patient assistance

Official page read
Phone800-727-5400Fax

800-498-5540

Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address
Merck Patient Assistance Program PO Box 1206 Wilkes Barre, PA 18703-1206

Completed Isentress PAP enrollment application, as directed on the product page.

The product page also directs expedited requests to this program number. The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Isentress HD patient assistance

Official page read
Phone800-727-5400Fax

800-498-5540

Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address
Merck Patient Assistance Program PO Box 1206 Wilkes Barre, PA 18703-1206

Completed Isentress HD PAP enrollment application, as directed on the product page.

The product page also directs expedited requests to this program number. The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Janumet patient assistance

Official page read
Phone800-727-5400Fax

800-419-8371

Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address
Merck Patient Assistance Program PO Box 1206 Wilkes Barre, PA 18703-1206

Completed Janumet PAP enrollment application, as directed on the product page.

The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Janumet XR patient assistance

Official page read
Phone800-727-5400Fax

800-419-8371

Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address
Merck Patient Assistance Program PO Box 1206 Wilkes Barre, PA 18703-1206

Completed Janumet XR PAP enrollment application, as directed on the product page.

The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Januvia patient assistance

Official page read
Phone800-727-5400Fax

800-419-8371

Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address
Merck Patient Assistance Program PO Box 1206 Wilkes Barre, PA 18703-1206

Completed Januvia PAP enrollment application, as directed on the product page.

The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Keytruda patient assistance

Official page read
Phone855-257-3932Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Keytruda Qlex patient assistance

Official page read
Phone855-257-3932Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Lagevrio — expedited request only

Official page read
Phone800-727-5400Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern; Saturday, 8 a.m.–1 p.m. Eastern; closed Sundays and holidays

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

Call and identify the request as expedited for LAGEVRIO. The product page says not to mail the enrollment form. Follow the representative’s submission instructions; no delivery timing is guaranteed. The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Lipfendra patient assistance

Official page read
Phone800-727-5400Fax

800-419-8371

Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address
Merck Patient Assistance Program PO Box 1206 Wilkes Barre, PA 18703-1206

Completed Lipfendra PAP enrollment application, as directed on the product page.

The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

M-M-R II — adult vaccine patient assistance

Official page read
Phone800-293-3881Fax

800-528-2551

Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

Provider enrollment must be approved before vaccine administration under this program. The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Ohtuvayre patient assistance

Official page read
Phone833-372-8492Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Pifeltro patient assistance

Official page read
Phone800-727-5400Fax

800-498-5540

Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address
Merck Patient Assistance Program PO Box 1206 Wilkes Barre, PA 18703-1206

Completed Pifeltro PAP enrollment application, as directed on the product page.

The product page also directs expedited requests to this program number. The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Pneumovax 23 — adult vaccine patient assistance

Official page read
Phone800-293-3881Fax

800-528-2551

Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

Provider enrollment must be approved before vaccine administration under this program. The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Prevymis Tablets patient assistance

Official page read
Phone855-404-5278Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Prevymis Oral Pellets patient assistance

Official page read
Phone855-404-5278Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Recombivax HB — adult vaccine patient assistance

Official page read
Phone800-293-3881Fax

800-528-2551

Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

Provider enrollment must be approved before vaccine administration under this program. The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Vaqta — adult vaccine patient assistance

Official page read
Phone800-293-3881Fax

800-528-2551

Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

Provider enrollment must be approved before vaccine administration under this program. The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Varivax — adult vaccine patient assistance

Official page read
Phone800-293-3881Fax

800-528-2551

Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

Provider enrollment must be approved before vaccine administration under this program. The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Vaxneuvance — adult vaccine patient assistance

Official page read
Phone800-293-3881Fax

800-528-2551

Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

Provider enrollment must be approved before vaccine administration under this program. The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Verquvo patient assistance

Official page read
Phone800-727-5400Fax

800-498-5540

Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address
Merck Patient Assistance Program PO Box 1206 Wilkes Barre, PA 18703-1206

Completed Verquvo PAP enrollment application, as directed on the product page.

The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Welireg patient assistance

Official page read
Phone855-257-3932Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Winrevair patient assistance

Official page read
Phone888-637-2502Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Zerbaxa — hospital product replacement

Official page read
Phone888-727-9535Published hours

Monday–Friday, 9 a.m.–5 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address

Not researched for this route

Hospital product replacement inquiries for ZERBAXA for intravenous use. The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Zolinza patient assistance

Official page read
Phone800-727-5400Fax

800-498-5540

Published hours

Monday–Friday, 8 a.m.–8 p.m. Eastern

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address
Merck Patient Assistance Program PO Box 1206 Wilkes Barre, PA 18703-1206

Completed Zolinza PAP enrollment application, as directed on the product page.

The product page also directs expedited requests to this program number. The program must confirm current eligibility and application requirements; listing a medicine does not establish coverage or assistance approval.

View source ↗ · Source checked 2026-10-22

Report an update
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

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Call preparation · editorial guide

Make the call count.

Find billing teams, financial-assistance programs and payment correspondence addresses. A bill-payment address is not a claims, records or specimen destination.

Have ready in your secure workspace

  • Lab or provider bill and relevant insurance explanation, kept privately
  • Existing billing or assistance reference
  • Authorized representative information if required

Questions to resolve

  • Is this a bill, insurance explanation or assistance application?
  • Which department reviews the balance or assistance request?
  • What written confirmation will document the next step?

This is a general administrative checklist, not payer policy or advice about a particular patient. Confirm the current plan instructions.

For healthcare offices

Found the contact. Still need to make the call?

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For the people making the calls

Put payer follow-up
on your office’s worklist.

Explore DialClerk for queued calls, hold handling, staff handoffs and a record of the next step. Tell us how your team works.

A request does not create an account or start a call. Use business contact information only. No patient information.

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