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JotPsych Notes
JotPsych Notes: from the Medical Group Management Association conference

4 steps to send your rate letter during open enrollment

Medicare Advantage plans enroll members for 2027 from October 15 to December 7, HealthCare.gov plans from November 1 to January 15.

Your rate letter to a health plan is drafted: raise the rates, or your practice leaves the network. The plan will sell 2027 coverage with your clinicians in its network.

Open enrollment for 2027 in Medicare Advantage and HealthCare.gov plans
dates per Medicare.gov and HealthCare.gov, read September 30, 2026; state-run Marketplaces set separate dates
October 2026
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November 2026
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December 2026
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January 2027
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  • Oct 15 to Oct 31: Medicare's Open Enrollment Period only
  • Nov 1 to Dec 7: Medicare's and HealthCare.gov's open enrollment
  • Dec 8 to Jan 15: HealthCare.gov's open enrollment only

Medicare's Open Enrollment Period runs October 15 to December 7, and HealthCare.gov's runs November 1 to January 15. Send each plan your rate letter inside that plan's own period.

  1. Find your contract's termination window. Read each contract. Mark the notice period and the dates when notice counts. Payers don't make termination windows easy to find, said Doral Jacobsen, a payer contracting consultant. "It's like the fourth full moon, two hundred ninety three days notice, but you can only do it in May."
  2. Name one owner for each payer. "If everyone's responsible, nobody's responsible," Jacobsen said. One person has to "own the payer contracting relationship," in her words. List each payer with its renewal date, its termination window, and the name of the person who owns the payer.
  3. Count each Medicare Advantage plan's members your clinicians saw in the past three years. Under a federal rule, the plan must write to each of those members at least 45 days before your clinicians leave its network. Start your count with your active patients in the plan.
  4. Send your letter during the plan's open enrollment. Jacobsen ties termination windows to open enrollment: payers "hate getting letters at that time. So use it." Medicare.gov's steps for joining a plan tell people to ask their doctors and pharmacies if they're in network with the plan before they join. HealthCare.gov members need a life event to change plans later.
Notice a Medicare Advantage plan owes its members when a behavioral health provider leaves
45 days
before the termination date, in writing, plus one attempt to call

From the Code of Federal Regulations, title 42, section 422.111(e), read October 3, 2026. Your clinicians' departure would require this notice, so the plan has a reason to answer your rate letter.

Put your count in each letter to a Medicare Advantage plan. For specialties other than primary care and behavioral health, the plan writes to members seen in the past three months, not three years.

JotPsych's Patient Directory report lists your active patients, each with current insurance.

See JotPsych
Sources:
  1. Doral Jacobsen, chief executive officer of Prosper Beyond, “Strategic Revenue Cycle Workplan Design for High-Impact Payer Engagement,” workshop WS1, Medical Group Management Association (MGMA) 2026 Annual Conference, San Antonio, September 27, 2026.
  2. Medicare.gov, Joining a plan, read September 30, 2026: the Open Enrollment Period, October 15 to December 7.
  3. HealthCare.gov, Dates and deadlines, read September 30, 2026.
  4. Code of Federal Regulations, title 42, section 422.111(e), changes to provider network, via the Electronic Code of Federal Regulations, read October 3, 2026.