DialClerk Directory

National Government Services (MAC J6/JK)

Provider services

Find the team that supports your practice. Match the plan and state before using a general provider line.

provider services

Medicare J6 Part A Provider Contact Center — live representative

Official page read
Phone877-702-0990Published hours

Monday–Friday, 8 a.m.–4 p.m. CT; closed 11 a.m.–3 p.m. CT on the second and fourth Friday.

Product, plan and location

other
Illinois · Minnesota · Wisconsin

Mailing address

Not researched for this route

Original Medicare J6 Part A coverage/billing explanations and complex provider inquiries. Have NPI, PTAN and the last five TIN digits ready. The center directs claim status and beneficiary eligibility available through IVR/portal back to self-service; representatives do not preauthorize services or answer beneficiary inquiries. The published rule effective May 1, 2025 permits one PTAN/NPI combination per call. No Medicare Advantage scope is implied.

View source ↗ · Source checked 2026-10-22 · Source published 2026-04-13 · CMS names National Government Services and the exact J6 and JK state groups ↗

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

provider services

Medicare JK Part A Provider Contact Center — live representative

Official page read
Phone888-855-4356Published hours

Monday–Friday, 8 a.m.–4 p.m. ET; closed noon–4 p.m. ET on the second and fourth Friday.

Product, plan and location

other
Connecticut · Maine · Massachusetts · New Hampshire · New York · Rhode Island · Vermont

Mailing address

Not researched for this route

Original Medicare JK Part A coverage/billing explanations and complex provider inquiries. Have NPI, PTAN and the last five TIN digits ready. The center directs claim status and beneficiary eligibility available through IVR/portal back to self-service; representatives do not preauthorize services or answer beneficiary inquiries. The published rule effective May 1, 2025 permits one PTAN/NPI combination per call. No Medicare Advantage scope is implied.

View source ↗ · Source checked 2026-10-22 · Source published 2026-04-13 · CMS names National Government Services and the exact J6 and JK state groups ↗

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

provider services

Medicare J6 Part B Provider Contact Center — live representative

Official page read
Phone866-234-7340Published hours

Monday–Friday, 8 a.m.–4 p.m. CT; closed 11 a.m.–3 p.m. CT on the second and fourth Friday.

Product, plan and location

other
Illinois · Minnesota · Wisconsin

Mailing address

Not researched for this route

Original Medicare J6 Part B coverage/billing explanations and complex provider inquiries. Have NPI, PTAN and the last five TIN digits ready. The center directs claim status and beneficiary eligibility available through IVR/portal back to self-service; representatives do not preauthorize services or answer beneficiary inquiries. The published rule effective May 1, 2025 permits one PTAN/NPI combination per call. No Medicare Advantage scope is implied.

View source ↗ · Source checked 2026-10-22 · Source published 2026-04-10 · CMS names National Government Services and the exact J6 and JK state groups ↗

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

provider services

Medicare JK Part B Provider Contact Center — live representative

Official page read
Phone866-837-0241Published hours

Monday–Friday, 8 a.m.–4 p.m. ET; closed noon–4 p.m. ET on the second and fourth Friday.

Product, plan and location

other
Connecticut · Maine · Massachusetts · New Hampshire · New York · Rhode Island · Vermont

Mailing address

Not researched for this route

Original Medicare JK Part B coverage/billing explanations and complex provider inquiries. Have NPI, PTAN and the last five TIN digits ready. The center directs claim status and beneficiary eligibility available through IVR/portal back to self-service; representatives do not preauthorize services or answer beneficiary inquiries. The published rule effective May 1, 2025 permits one PTAN/NPI combination per call. No Medicare Advantage scope is implied.

View source ↗ · Source checked 2026-10-22 · Source published 2026-04-10 · CMS names National Government Services and the exact J6 and JK state groups ↗

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 the team that supports your practice. Match the plan and state before using a general provider line.

Have ready in your secure workspace

  • Practice NPI and tax ID, kept in your secure workspace
  • Exact product name and member ID card
  • A one-sentence request and your office callback number

Questions to resolve

  • Does this team handle this plan and state?
  • Which department owns the next step?
  • What reference number should the office keep?

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?

Explore how DialClerk organizes the brief, hold time and staff handoff for your next administrative call.

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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